Dɛn ne SEI layer?- Polinovel .

Asɛmmisa titiriw a ɛwɔ battery engineer biara anim ne sɛ: dɛn nti na ɛsɛ sɛ wɔyɛ .Lithium batere a wɔde batere gu mu bio .Sɛ bere kɔ so no, sɛ wobɛbrɛ wo ho ase, na woahwere tumi a wode bɛbɔ wo ho ban no? Mmuaeɛ no wɔ nanometer-ahobanbɔ sini a ɛyɛ teateaa a wɔfrɛ no solid electrolyte interphase (SEI) layer mu. Saa ntam a ɛwɔ ntam yi yɛ nea ɛba ara kwa wɔ anode no ani wɔ charging cycle kakraa bi a edi kan no mu, na ne su na ɛkyerɛ sɛ ebia batere a wotumi de hyɛ mu bio no di kyinhyia 500 anaa 5,000. SEI layer no ho ntease nyɛ adesua mu apɔw-mu-teɛteɛ kɛkɛ-ɛne nsonsonoe a ɛda ahoɔden a wɔde sie a wotumi de ho to so ne nea edi nkogu ntɛm, ɛma wɔn a wɔyɛ nneɛma no bɔ ka ɔpepem pii wɔ warranty ho nsɛm mu na ɛsɛe din a wɔde ahyɛ wɔn din mu.

SEI layer no gyina hɔ ma abɔde ano aduru a ɛyɛ fɛ no mu biako a ɛfa nnuru a ɛwɔ hɔ a efi awosu mu ntawntawdi ho. Sɛ lithium ions fa electrode ahorow ntam bere a wɔrebɔ no a, electrolyte-a mpɛn pii no ɛyɛ lithium nkyene a wɔapete wɔ organic carbonates-a ɛwɔ hɔ wɔ thermodynamically unstable tebea mu. Wɔ tumi a ɛwɔ 1 volt versus lithium metal ase no, saa electrolyte molecules yi fi ase sɛe wɔ anode no ani.

Sɛ́ anka ɛde batere a ɛyɛ hu bɛba no, saa porɔw yi ma biribi yɛ nwonwa: aduru a ɛyɛ tratraa, a ɛma nsu fa mu nanso ɛmma nsu ntumi nkɔ mu. Fa no sɛ ɛyɛ molecule gatekeeper. Lithium ions, a ɛyɛ ketewaa na ɛwɔ ahoɔden no, betumi afa mu kwa. Ɛlektrɔn ne electrolyte molecule akɛse ntumi nyɛ saa. Saa nsu a ɛma nsu fa mu yi siw electrolyte a ɛbɛsɛe bio no ano bere a ɛma battery no yɛ adwuma sɛnea ɛsɛ no.

Nnansa yi nhwehwɛmu a efi MIT’s Department of Materials Science (2024) mu no kyerɛ sɛ SEI ntoatoaso no taa fi nanometre 10 kosi 100 wɔ ne kɛse mu-ɛyɛ mmerɛw bɛyɛ mpɛn 1,000 sen onipa ti nhwi. Nanso saa gossamer sini yi nya batere nneyɛe so nkɛntɛnso kɛse. Wɔn electrochemical impedance spectroscopy nhwehwɛmu no daa no adi sɛ SEI resistance yɛ 30-40% wɔ battery impedance nyinaa mu wɔ nkwammoaa a ɛyɛ foforo mu, kyɛfa a enyin sɛ battery mfe.

Nneɛma a wɔde yɛ no mu nsɛm a ɛyɛ den no ma anyinam ahoɔden ho abenfo a wɔn ho akokwaw mpo ho dwiriw wɔn. Sɛ́ anka SEI no bɛyɛ ade koro no, ɛwɔ ntoatoaso pii a ɛwɔ nnuru a ɛsono emu biara. x{2}}ray photoelectron spectroscopy nhwehwɛmu a wotintimii wɔ Nature Energy (2024) mu no kyerɛɛ nneɛma ahorow 15 a ɛwɔ SEI ntoatoaso a ɛho akokwaw mu, a lithium carbonate (Li2co2), lithium oxide (Li2oo), lithium fluoride (lif), ne lithyl carbon ahorow ahorow a ɛwɔ nipadua mu ka ho. Ade biara a ɛwɔ mu no boa ma nneɛma pɔtee bi ba: nkyene a ɛnyɛ nkwaboaa ma mfiri no gyina, bere a organic polymers ma wotumi yɛ nsakrae ma ɛne nsakrae a ɛba wɔ cycling mu no hyia.

SEI Layer

SEI layer no npue ntɛm ara. Nea ɛba no di nnuru a esisi no nnidiso nnidiso pɛpɛɛpɛ, na emu biara nya batere no su a etwa to no su so nkɛntɛnso.

Ɔfa 1: Electrolyte a wɔtew so mfiase (0-5 kyinhyia) .

Wɔ charge a edi kan no mu no, sɛ anode tumi no kɔ fam sen electrolyte no electrochemical stability window no a, reduction reactions fi ase wɔ active surface sites. Ethylene carbonate, electrolyte solvent a ɛtaa ba no, fa biako-ɛlektrɔn so tew mu ma ɛyɛ radical anions. Saa mmoa a wɔyɛ ade kɛse yi porɔw ntɛmntɛm ma ɛbɛyɛ lithium ethylene dicarbonate (LEDC) ne ethylene mframa.

2024 nhwehwɛmu bi a Stanford Precourt Institute dii SEI formation akyi wɔ Real-bere a wɔde operando atom tumi microscopy dii dwuma no daa tumi a wɔnhwɛ kwan adi. Sɛ́ anka wɔbɛkata so pɛpɛɛpɛ no, SEI a ɛwɔ mfiase no yɛ nsupɔw a ɛsono emu biara a ne kɛse bɛyɛ nanometre 5-10. Nsupɔw yi de nkakrankakra ka bom wɔ kyinhyia ahorow a edi hɔ no mu, na ɛma sini a ɛkɔ so daa ba. Nhwehwɛmufoɔ no kyerɛw sɛ ɛkata so a ɛnwie pɛyɛ wɔ mfitiaseɛ kyinhyia no mu no ma kwan ma wɔkɔ so tew electrolyte so, na wɔdi lithium foforɔ a ɛyɛ adwuma na ɛtew mfitiaseɛ coulombic ahoɔden so kɔ 85-92%.

Ɔfa 2: Layer densification (5-50 cycles) .

Bere a sakre so a wɔde tu mmirika kɔ so no, SEI nhyehyɛe a edi kan no fa compaction mu. Lithium ions a ɛretu fa layer no mu wɔ charge biara mu-discharge cycle solvation shells a ɛkɔhyɛ structure no mu. Saa molecule ahorow a wɔakyere no yi porɔw nkakrankakra, na ɛde nneɛma foforo ka ho fi layer no ankasa mu.

Nea ɛyɛ anigye no, saa densification yi di fractal-te sɛ nhwɛso ahorow akyi. Nhwehwɛmufoɔ a wɔwɔ Cambridge Suapɔn mu (2024) a wɔde cryogenic transmission electron microscopy dii dwuma no hunuu sɛ SEI ntoatoasoɔ nya nhyehyɛeɛ a ɛwɔ sorosoro: ɛwɔ mu a ɛyɛ den a nneɛma a ɛnyɛ nkwaboaa na ɛdi so (titiriw li₂co2 ne lif) te aseɛ wɔ mpɔtam a ɛwɔ akyi a ɛyɛ porous a ɛwɔ abɔdeɛ a nkwa wom a ɛwɔ abɔdeɛ a nkwa wom a ɛwɔ hɔ no ase. Saa bilayer architecture yi da adi sɛ ɛyɛ amansan nyinaa de wɔ electrolyte ahorow ahorow mu, a ɛkyerɛ sɛ thermodynamic draips atitiriw mmom sen sɛ ɛbɛfa akwanhyia ahorow a ɛkɔ so wɔ ɔkwan a ɛkɔ so no so.

Ɔfa 3: Nneɛma a ɛkari pɛ a ɛyɛ den ({1}} kyinhyia) .

Awiei koraa no, SEI nyin dodow so tew bere a ɔfasu no mu yɛ duru yiye na ɛyɛ den ma etumi siw electrolyte a ɛso tew bio no ano no. Nanso, "stable" da no adi sɛ ɛdaadaa-SEI no nnyae ankasa da. charge biara-discharge cycle no ma mfiri mu nhyɛsoɔ firi anode volume nsakraeɛ mu ba (graphite no trɛw bɛyɛ 10% berɛ a lithiated koraa). Saa adwennwene yi ma microcracks a ɛma anode a ɛyɛ foforo no da adi, na ɛkanyan SEI asiesie a ɛwɔ localized no denam electrolyte a wɔtew so foforo so.

Nnwumayɛ mu sɔhwɛ data a efi mid-sized battery manufacturer wɔ Germany (2024) akyi 500 nkwammoaa boro 1,000 cycles daa no adi sɛ SEI kɔ so di bɛyɛ 0.03% active lithium wɔ cycle mpo akyi mfiase formation. Bere a ɛte sɛ nea ɛnyɛ hwee no, saa lithium a ɛyera a ɛkɔ so tra hɔ yi boaboa ano kɔ 30% tumi a ɛso tew so wɔ kyinhyia 1,000 mu-a ɛkyerɛkyerɛ nea enti a ɛnyɛ yiye mpo-ahyehyɛ batere no sɛe no sɛe a wontumi nkwati.

SEI layer no nnuru a ɛyɛ den no ne nea ɛwɔ batere no ankasa mu no di asi. Nnɛyi nhwehwɛmu akwan ada nneɛma ahorow a ɛyɛ nwonwa adi wɔ nneɛma a wɔabom ayɛ mu, na emu biara di dwuma pɔtee wɔ layer adwumayɛ mu.

Nneɛma a ɛnyɛ nkwaboaa: Fapem no .

Lithium carbonate (Li2co3) taa di dwuma a ɛnyɛ nkwaboaa, a ɛyɛ 30-40% a ɛyɛ SEI dodow a ɛwɔ mu nyinaa sɛnea emu dɔ-Profiling X-ray photoelectron spectroscopy adesua ahorow te. Saa aduru yi nam electrolyte a ɛso tew so na ɛba na ɛma mfiri no yɛ den. Nanso, li2co3 a ɛboro so no betumi ama layer resistance akɔ soro efisɛ ne ionic conductivity (10⁻ 4 s/cm wɔ dan mu hyew) di akyi kɛse wɔ nneɛma afoforo akyi.

Lithium fluoride (LIF) pue sɛ nea ɔyɛ adwuma no mu ɔkannifo. Nhwehwɛmu a efi Joint Center for Energy Storage Research (2024) mu no daa no adi sɛ LIF-Sei ntoatoaso a ɛdɔɔso no da ionic conductivity a ɛkorɔn 40% adi ne 60% mfiri a ɛyɛ den sɛ ɛbɛyɛ yiye bere a wɔde toto carbonate-ahokafo a wɔyɛ adefo ho no. Asɛnnennen no? LIF fi electrolyte nkyene (LIPF1) a ɛporɔw mu titiriw, a ɛba ntɛmntɛm wɔ ɔhyew a ɛkɔ soro mu. Eyi ma wɔyɛ nhyehyɛe ho asɛnnennen: SEI nhyehyɛe no yiye denam-temperature formation cycling a ɛkorɔn so, anaasɛ ɛtew mfiase tumi a ɛyera no so denam dan-temperature protocols so?

Nneɛma a ɛwɔ organic mu: matrix a ɛyɛ mmerɛw no .

Organic ahorow-titiriw lithium alkyl carbonates te sɛ lithium ethylene dicarbonate (LEDC) ne lithium methyl carbonate (LMC){1}}Akontaabu a ɛfa SEI a ɛwɔ 40-60% ho. Saa polymeric nneɛma yi ma wotumi yɛ nsakrae kɛse, na ɛma SEI no tumi fa anode volume nsakrae a enni mu.

Nanso, nneɛma a ɛwɔ nipadua no mu no hyia nsɛnnennen a ɛyɛ den. Fourier-Transform infrared spectroscopy tracking a nhwehwɛmufoɔ a wɔwɔ Argonne National Laboratory (2024) kyerɛ sɛ LEDC dodoɔ so tew bɛyɛ 15% wɔ kyinhyia 200 a ɛdi kan no mu, a wɔde nkakrankakra de mmoa a wɔnni nkwaboaa a ɛyɛ den asi ananmu. Saa composition drift yi kyerɛkyerɛ nea enti a battery impedance taa kɔ soro wɔ mfinimfini-of-life cycling bere mpo a dramatic capacity fade no nsii.

Trace components: Nkɛntɛnso a ɛboro so .

Nneɛma a ɛwɔ hɔ a ennu 5% wɔ mass mu no betumi anya SEI ahoɔden so nkɛntɛnso kɛse. Lithium oxalate (Li2C2O4), a ɛnam oxidative electrolyte porɔw so na ɛba no pue wɔ dodow a ɛba fam sen 3% nanso ɛma akwan a ɛma nneɛma sɛe ntɛmntɛm. Nhwehwɛmu bi a wɔyɛe wɔ afe 2024 mu wɔ Journal of Power Sources mu no de oxalate dodow a ɛkɔ soro no bataa 25% tumi a ɛyɛ ntɛmntɛm no ho, efisɛ saa aduru yi ionic conductivity a enye no ma localized resistance hotspots ba.

Nea ɛne eyi bɔ abira no, fluorinated organic ahorow te sɛ lithium difluorophosphate ma SEI adwumayɛ tu mpɔn wɔ trace levels mpo mu. Battery a Taiwans electronics adwumakuw bi yɛ a ɛde 2% fluoroethylene carbonate a ɛka ho a ɛka ho no daa no adi sɛ ɛyɛ 15% cycle life sɛ wɔde toto mfiase nnuru ho a, wɔkyerɛ sɛ ɛyɛ SEI a ɛyɛ den a ɛkɔ soro fi fluorinated organic components mu.

Battery biara ho nkyerɛkyerɛmu-tumi, kyinhyia nkwa, tumi tumi, ahobammɔ-di akyi kɔ SEI su ahorow so. Saa nkitahodi ahorow yi ntease ma nkɔso a wɔde asi wɔn ani so sen sɛ wɔbɛsɔ ahwɛ-ne-mfomso nkɔso.

Tumi a wɔde hyɛ mu: Lithium Inventory ho haw no .

Bere biara a SEI no benyin anaasɛ ɛresiesie no, ɛwe lithium a ɛyɛ adwuma fi batere no mu. Saa "trapped" lithium yi ntumi mfa ne ho nhyɛ ahoɔden a wɔkora so mu bio da. Nkontaabuo nhwɛsoɔ a nhwehwɛmufoɔ a wɔwɔ Technical University of Munich (2024) de yɛɛ no buu akontaa sɛ SEI a wɔhyehyɛ no di 8-12% wɔ lithium inventory a ɛdi kan no mu wɔ kyinhyia 50 a ɛdi kan no mu wɔ graphite-anode nkwammoaa a wɔtaa yɛ no mu.

Eyi kyerɛkyerɛ nnwuma no adwene a ɛfa nea edi kan-cycle coulombic efficiency ho no mu. Sɛ battery nya 90% efficiency wɔ ne charge a edi kan no so a, lithium a ne bo yɛ den no mu 10% bɛyɛ locked daa wɔ SEI no mu. Wɔ 50 kWh anyinam ahoɔden kar battery a bɛyɛ 3 kg lithium, ɛno yɛ 300 grams a wɔsɛe no ansa na kar no mpo afi adwumayɛbea-a egyina hɔ ma $30-50 wɔ raw material ka a wɔde ka ho wɔ nneɛma a atwa yɛn ho ahyia ho nsunsuanso foforo fi mining.

Capacity fade rates ne SEI nyin kinetics no hyia tẽẽ. Sɔhwɛ a Chinafoɔ a wɔyɛ batere yɛɛ no ntɛmntɛm wɔ nkwammoaa 200 (2024) so no daa no adi sɛ nkwammoaa a SEI nyini brɛoo (wɔsusuu no denam electrochemical impedance spectroscopy so) no kuraa 85% tumi wɔ kyinhyia 1,000 akyi, berɛ a nkwammoaa a ɛkɔ soro ntɛmntɛm-nkɔso no kɔɔ fam kɔɔ 75% wɔ tebea a ɛyɛ pɛ mu. Nsonsonoe no? Electrolyte additives a ɛhyɛɛ den, brɛoo-anyin SEI ntoatoaso.

Tumi a ɛyɛ adwuma: Resistance yɛ ɔkwa (nanso wotumi di ho dwuma) .

SEI layer no de resistance ka lithium ion biara akwantu a ɛda electrode ahorow ntam no ho. Saa resistance yi da adi sɛ voltage drop wɔ high-mprempren adwumayɛ mu, ɛtew tumi a ɛwɔ hɔ so. Rate capability testing a ɛwɔ aguadi nkwammoaa 100 mu (Oxford Sukuupɔn, 2024) hui sɛ SEI a ɛko tia no yɛ 35-45% wɔ nkwammoaa a wɔde hyɛ mu nyinaa mu wɔ 25℃, a ɛkɔ soro kodu 60-70% wɔ -20℃.

Ɔhyew ho nkate fi SEI no ionic conductivity ɔhyew a egyina so. Nea ɛnte sɛ electrolytes a ɛda so ara yɛ nsu a ɛyɛ adwuma wɔ ɔhyew a ɛba fam mu no, SEI ionic conductivity no so tew ntɛmntɛm. Wɔ -20℃, SEI ionic conductivity a ɛtaa ba no so tew 50-100× sɛ wɔde toto dan mu hyew botae ho a. Eyi kyerɛkyerɛ anyinam ahoɔden kar ahorow a agye dimmɔne sɛ ɛyɛ awɔw-wim tebea a ɛyera-ɛlektrɔnik pɛ sɛ ɛsen no mu, nanso SEI no remma lithium ions nkɔ ntɛmntɛm sɛnea ɛsɛ.

A mid-sized electric motor manufacturer wɔ Germany (2024) dii saa asɛnnennen yi ho dwuma denam SEI a wɔde yɛ adwuma yiye denam electrolyte additives so. Wɔn formulation a wɔasesa no maa LIF a ɛwɔ mu no kɔɔ soro fi 20% koduu 35%, na ɛmaa-20℃tumi a wɔde ma no yɛɛ yiye 30% sɛ wɔde toto nkwammoaa a wɔde di dwuma mfiase no ho a. Nneɛma a wɔde di dwuma no? A 5% nkɔanim wɔ dan mu-temperature resistance, a wogye tom ma wɔn awɔw-wim tebea gua.

Ahobammɔ ho nkyerɛkyerɛmu: bere a ahobammɔ bɛyɛ afiase .

SEI no ahobanbɔ adwuma titiriw-Electrolyte reduction a ɛbɛba no ano aduru-betumi asan akɔ akyi wɔ tebea horow a wɔde di dwuma ɔkwammɔne so mu. Sɛ SEI no mu paapae kɛse bere a mfiri a wɔde di dwuma ɔkwammɔne so (ahwease, hyɛn mu) no, anode a ɛyɛ foforo no di nkitaho wɔ electrolyte mu tẽẽ, na ɛkanyan exothermic reactions ntɛmntɛm. Saa "thermal runaway" tebea yi betumi ama nkwammoaa hyew akɔ soro fi 25℃akɔ 800℃wɔ nea ennu sikani 10 mu.

Ahobammɔ ho sɔhwɛ a National Renewable Energy Laboratory (2024) yɛe wɔ nkwammoaa a wɔahyɛ da asɛe no ho no daa no adi sɛ SEI a ɛyɛ den wɔ mfiridwuma mu nhyɛso ase no gu ahorow kɛse wɔ nea wɔahyehyɛ no mu. Nkwammoaa a ɛwɔ carbonate-Sei ntoatoaso a ɛdɔɔso kyerɛe sɛ 40% ɔhyew a ɛkɔ soro runaway asiane bere a wɔde toto fluoride-ahonyafo mfɛfo, bere a carbonates porɔw exothermically wɔ ɔhyew a ɛba fam.

Nanso, SEI a ɛyɛ den dodo no de ahobammɔ ho haw ahorow ba. Bere a wɔrebɔ ka kɛse no, lithium ions ntumi mfa ntɛmntɛm nkɔ graphite mu mfa SEI a ɛyɛ den na ɛyɛ den no mu. Mmom no, dade lithium mprɛte a ɛwɔ anode no ani- "lithium plating" adeyɛ a ɛyɛ hu no. Saa lithium dendrites yi betumi atutu mpaapaemu no mu, na ɛde ntini ntiantiaa a ɛwɔ mu no aba. Bɛboro 100 Electric Vehicle Ogya Nhwehwɛmu (2024) kyerɛɛ sɛ lithium plating yɛ ade a ɛboa wɔ nsɛm 40% mu, a mpɛn pii no ɛne ntɛmntɛm-gye ayayade a ɛboro SEI ionic conductive so.

Nsusuwii bɔ amanneɛ, nanso adeyɛ de nea efi mu ba ba. Wɔn a wɔyɛ batere no de akwan horow pii di dwuma de ma SEI a wɔyɛ ne ne su yɛ papa, na emu biara wɔ mfaso ne anohyeto ahorow a ɛda nsow.

Akwankyerɛ 1: Electrolyte additive engineering .

Nneɛma nketenkete (0.5-5 wt%) a wɔde bɛba a wɔde nnuru pɔtee bi a ɛpɛ sɛ ɛtew so ma ɛyɛ SEI afã horow a mfaso wɔ so no gyina hɔ ma ɔkwan a wɔtaa fa so yɛ ade yiye. Vinylene carbonate, ade a wɔde ka ho a wɔasua ho ade kɛse no so tew ansa na wɔde electrolyte solvents a wɔtaa de di dwuma no aba, na ɛma ɛyɛ teateaa ansa na SEI a ɛkyerɛ layer a ɛbɛba akyiri yi no ayɛ adwuma.

SAAS adwumakuw bi a wɔyɛ wɔn ho titiriw wɔ batere sohwɛ nhyehyɛe ahorow mu ma ahoɔden a wɔkora so no yɛɛ nsɛm a efi nkwammoaa 50,000 a ɛwɔ wɔn a wɔyɛ nneɛma 20 mu (2024) mu no mu nhwehwɛmu. Wɔn mfiri adesua algorithms no kyerɛe sɛ nkwammoaa a wɔwɔ fluoroethylene carbonate additive no daa 18% a ɛba fam impedance nkɔso dodow adi ne 22% a ɛyɛ papa a wɔde hyɛ mu bere a wɔde totoo mfiase nhyehyɛe ahorow ho no. Afiri no? FEC ma LIF-Sei ntoatoaso a ɛwɔ ionic conductivity a ɛkorɔn ne mfiridwuma su ahorow no yɛ kɛse.

Ka a wɔbɔ wɔ ɛka ho no ho hia. Bere a fluorinated additives ma adwumayɛ tu mpɔn no, ɛma electrolyte ho ka kɔ soro $0.50-1.00 wɔ battery ahoɔden kWh biara mu. Sɛ wopɛ sɛ wonya mfaso-Scale 100 MWh ahoɔden a wɔkora so nhyehyɛe a, ɛno yɛ $50,000-100,000 foforo. Ɛsɛ sɛ wɔn a wɔyɛ nneɛma no kari pɛ wɔ adwumayɛ mu mfaso ne gua so nokwasɛm ahorow-a ɛma ebinom di kan de nneɛma a wɔde ka ho a ɛyɛ papa ma nneɛma a wɔde di dwuma yiye ho nhyehyɛe bere a wɔde nnuru a ɛnyɛ den di dwuma ma nneɛma a ɛho ka sua no.

Akwankyerɛ 2: Nhyehyɛɛ ho nhyehyɛe a ɛyɛ papa .

Charging protocol a wɔde dii dwuma wɔ SEI a edi kan no mu no nya layer properties so nkɛntɛnso daa. Nhyɛso a ɛyɛ brɛoo a wɔde charge (C/20 kosi C/50 rates) ma kwan ma wɔtew electrolyte so kɛse, ɛma ɛyɛ den, ɛyɛ pɛ. Nanso, eyi di factory time a ɛsom bo-a ɛyɛ nea ɛyɛ fɛ wɔ c/50 no hwehwɛ nnɔnhwerew 50 sɛ wɔde toto nnɔnhwerew 5 ho wɔ C/5.

Adwumakuw bi a wɔyɛ nneɛma a wɔde yɛ nneɛma a wɔde lithium ayɛ a wɔde yɛ mfiridwuma mu nneɛma (2024) yɛɛ nhyehyɛe ho nhwehwɛmu kɛse wɔ nkwammoaa 500 mu. Wohuu beae a ɛyɛ dɛ a eye sen biara: mfiase no charge wɔ C/30 kosi 70% tebea-a ɛwɔ-charge, akyi no, 48-dɔnhwerew bere, afei wɔawie wɔ C/10. Saa protocol yi nyaa 95% first-cycle coulombic efficiency bere a na ɛhwehwɛ nnɔnhwerew 30 pɛ a ɛyɛ formation bere-20 nnɔnhwerew ntɛmntɛm sen pure C/50 charging a ɛne SEI su yɛ pɛ.

Ɔhyew a ɛba bere a wɔreyɛ no nso ho hia kɛse. Nhwehwɛmu a nhwehwɛmufoɔ a wɔwɔ Tohoku Suapɔn (2024) yɛe no hunuu sɛ formation a ɛwɔ 45℃no maa SEI layers 30% rich wɔ LIF mu sɛ wɔde toto 25℃formation ho a, ɛma cycling stability a ɛdi hɔ no tu mpɔn. Nanso, akɔ soro-temperature formation ma solvent decomposition kɔ soro, na ɛgye 3-5% active lithium foforo. Nnwumakuw a wɔde wɔn ani si ahoɔden a ɛsen biara so no pɛ sɛ wɔyɛ dan mu hyew; Wɔn a wɔde cycle life di kan no gye lithium adehwere asotwe no tom ma SEI a ɛkorɔn no.

Akwankyerɛ 3: SEI a wɔde nsa ayɛ Pre-aduru .

Sɛ́ anka wɔde wɔn ho bɛto formation a ɛba ara kwa so no, wɔn a wɔyɛ adwuma a wɔakɔ anim no binom de SEI ntoatoaso a wɔde nsa ayɛ no to hɔ ansa na wɔde electrolyte aka ho. Atomic layer deposition (ALD) a ɛyɛ ultrathin (5-10 nm) aluminum oxide anaa titania films no ma wonya nnyinaso a ɛyɛ den a ɛkyerɛ abɔde mu SEI a ɛba akyiri yi kwan.

Bere a ɛrehyɛ bɔ wɔ nhwehwɛmu mu no, nsɛnnennen a ɛkɔ soro no ma wotumi gye di wɔ aguadi mu. ALD mfiri no bo yɛ dɔla ɔpepem 2-5 wɔ unit biara mu a ɛwɔ limited throughput (100-500 cells da biara). Battery adwumayɛbea a ɛyɛ 1 GWh a ɛyɛ nkwammoaa 2,000 da biara no bɛhwehwɛ sɛ wɔyɛ ALD nhyehyɛe 4-20, na ɛde dɔla ɔpepem 10-100 bɛka sika kɛse ho. Ne saa nti, saa kwan yi da so ara yɛ nneɛma a ɛyɛ fɛ te sɛ ahunmu ne nnuruyɛ mfiri a adwumayɛ ma ɛka sɛ ɛho ka fata.

SEI Layer

SEI layer no nyɛ static-ɛdannan no daa wɔ battery nkwa nyinaa mu, ɛyɛ nsakrae ma ɛyɛ adwuma tebea bere a nkakrankakra ɛrebrɛ ase. Saa adannandi yi ho ntease ma wotumi ka batere tenten ne huammɔdi akwan ho nkɔm yiye.

Mfiase Nkwa (0-200 kyinhyia): Nneɛma a wɔahyehyɛ .

Wɔ cycling a edi kan no mu no, SEI no fa nnuru foforo mu nhyehyɛe foforo bere a wɔayɛ no awie mpo no. Nuklea magnetic resonance spectroscopy nhwehwɛmu a efi Warwick Sukuupɔn mu (2024) a ɛdi nkwammoaa koro no ara akyi wɔ kyinhyia 200 mu no daa no adi sɛ organic component concentration so tew 20-30% bere a inorganic content kɔ soro sɛnea ɛfata. Saa nsakrae yi da thermodynamic nhyehyɛe foforo a ɛkɔ nneɛma a ɛyɛ den kɛse no adi.

Nea ɛyɛ anigye no, saa onyin yi ma adwumayɛ afã horow bi tu mpɔn bere a ɛbrɛ afoforo ase no. Impedance mfiase no so tew 10-15% wɔ 50-100 cycles a edi kan no mu bere a SEI densifies ne ionic akwan no yɛ papa no. Nanso, saa densification yi ma layer no yɛ brittle kɛse, na ɛma tumi a ɛwɔ mfiri mu nhyɛso mu fi volume nsakrae mu no yɛ kɛse. Acoustic emission monitoring detected 3× more cracking events during cycles 100-200 sɛ wɔde toto kyinhyia 1-50 ho a, ɛwom mpo sɛ nsakrae a ɛba wɔ nne kɛse mu no kɔɔ so yɛɛ nea ɛkɔ so daa de.

Mfinimfini Asetra (200-800 kyinhyia): Ɔsɛe a ɛyɛ den .

Bere a SEI no ayɛ kɛse mfiase no, ɛhyɛ bere a ɛyɛ den kakra a onyin kɔ so yɛ mmerɛw nanso ɛkɔ so daa no mu. Capacity fade taa kɔ so linearly wɔ 0.05-0.1% wɔ cycle biara mu, titiriw no efi lithium a wɔkɔ so di bere a wɔresiesie SEI wɔ krak mmeae.

Thermal cycling ma ɔsɛe ntɛmntɛm wɔ saa fã yi mu. Obi bi a ɔyɛ batere a ɛwɔ South Korea (2024) sɔɔ nkwammoaa hwɛe wɔ ɔhyew ho nsɛm a ɛyɛ nokware ase a ɛresuasua anyinam ahoɔden kar a wɔde di dwuma no: da biara da ɔhyew a ɛkɔ soro wɔ digrii 15 ne 45 ntam . Saa thermally-cycled cells yi kyerɛɛ 40% ntɛmntɛm fade sɛ wɔde toto daa-temperature controls ho a, wɔkyerɛ sɛ ɛyɛ thermal expansion/contraction a ɛma SEI mpaapaemu foforo a ɛhwehwɛ sɛ wɔkɔ so siesie no.

Nkwa awiei (800+ kyinhyia): Ɔsɛe a ɛrekɔ so ntɛmntɛm .

Awiei koraa no, nneɛma a wɔsɛe no a wɔaboaboa ano no sɛe SEI mudi mu kura, na ɛkanyan ɔsɛe a ɛba ntɛmntɛm. Post-mortem analysis of aged cells from multiple manufacturers (Technical University of Denmark, 2024) daa no adi sɛ end-Life SEI layers no awiei da 200-300% thickness adi sɛ wɔde toto nkwammoaa a ɛyɛ foforo ho a, ɛwɔ mu porosity a ɛtrɛw ne delamination fi anode surfaces.

Saa structure collapse yi ma bulk electrolyte no tumi fa mpaapaemu mu, na ɛne anode a ɛyɛ foforo no kɔ akyiri wɔ electrode no mu. Electrolyte a ɛso tew a efi mu ba no di lithium ntɛmntɛm bere a ɛma mframa nhyɛso kɛse ba nkwammoaa a wɔatoto mu no mu. Nhyɛso sensor ahorow a ɛwɔ nkwammoaa a wɔadi mfe mu no susuw nhyɛso a ɛkɔ soro 1-3 bar-a ɛboro so ma ɛde mfiri a ɛyɛ mmerɛw a ɛwɔ can afasu ne ahobammɔ ho haw a ebetumi aba no ba.

Application ahorow di kan SEI su ahorow, a ɛde kɔ optimization akwan horow so wɔ nnwuma ahorow mu.

Electric Vehicles: Cycle Life Imperative .

Wɔn a wɔyɛ kar no de wɔn ani si 1,500-2,000 kyinhyia so wɔ 80% tumi a wɔde sie-a ɛne karka yɛ kilomita 300,000-400,000. Eyi a wobenya no hwehwɛ sɛ SEI layers a ɛko tia mfiri a ɛsɛe fi daa charge-discharge cycling bere a ɛkura resistance a ɛba fam ma tumi a wogye tom delivery.

European Automotive Battery Supplier (2024) a ɔne adwumakuw kɛse bi a wɔyɛ kar yɛ adwuma no yɛɛ abien-additive electrolyte system a ɛka fluoroethylene carbonate ne vinylene carbonate bom. Wɔn battery packs daa 1,800-cycle tumi a impedance nkɔso anohyeto to 30%-a ɛdɔɔso ma mfe 15 kar nkwa wɔ typical driving patterns. Nneɛma foforo a wɔyɛ no titiriw? Time-released additive activation, a FEC di SEI a ɛba ntɛm so bere a VC ma tumi a ɛkɔ so siesie denam cycling a wɔatrɛw mu so.

Ɛlektrɔnik mfiri a wɔde di dwuma: ahoɔden a ɛyɛ den kan .

Smartphone ne laptop battery de ahoɔden density di kan sen biribiara, gye cycle nkwa tiawa (500-800 cycles) tom sɛ ɛyɛ nea wogye tom ma mfe 2-3 product lifecycles. Eyi ma SEI ntoatoaso a ɛyɛ tratraa ne coulombic a edi kan a ɛkorɔn a ɛkɔ soro no tumi yɛ adwuma yiye, na ɛma wotumi de di dwuma kɛse.

Smartphone yɛfoɔ a ɔdi kan no battery supplier (2024) de aggressive formation protocols-gye di dwuma wɔ C/5 mmom sen sɛ ɛbɛyɛ nnwuma-Standard C/20-de di kan lithium a wɔde di dwuma no so. Wɔn nkwammoaa no nya 94% first-kyinhyia yiye bere a wɔde toto 90% ho ma amanne kwan so nhyehyɛe no, na ɛkyerɛ ase kɔ 4% foforo a wotumi de di dwuma. Nanso, SEI nyin yɛɛ ntɛmntɛm wɔ bere a wɔde di dwuma no mu no ma cycle cycle no ano brɛ ase ma ɛyɛ 600 charges-a ɛfata ma typical upgrade cycles nanso ɛnyɛ nea ɛfata ma automotive applications.

Ahoɔden a wɔkora so nhyehyɛe: kalenda nkwa ne ahobammɔ .

Grid-Scale Energy storage systems betumi ayɛ adwuma mfe 20+ mfe, a ɛde kalenda nkwa ne ahobammɔ di kan sen ahoɔden adwumayɛ anaa ahoɔden a ɛyɛ den. Saa dwumadie yi fa SEI layers a ɛyɛ den, ɛyɛ den mpo ho wɔ ɛka a wɔbɔ wɔ resistance a ɛkorɔn ho.

Battery nkabom adwumakuw bi a ɛyɛ adwuma titiriw wɔ mfaso ho-Scale Storage (2024) yɛɛ nhyehyɛe bi a wɔde hyehyɛ nneɛma pɔtee bi ma kalenda nkwa ntrɛwmu: Ultra-Slow mfiase charge (C/40) a ɛno akyi no, asram abiɛsa a wɔde di dwuma a ɛba fam-mprempren cycling ansa na wɔde adi dwuma. Wɔn nhyehyɛe ahorow no kyerɛ .<0.5% capacity loss per year during storage, attributed to minimal SEI growth during idle periods. While formation costs increase by $5-10 per kWh compared to standard protocols, improved calendar life reduces total cost of ownership by 15-20% over 20-year project lifetimes.

Mprempren SEI nyansahu wɔ anohyeto ahorow-nhwehwɛmufo de nsiyɛ di akwan pii akyi kɔ next-awo ntoatoaso ntease ne tumidi so.

Wɔ-Situ characterization: SEI formation a wɔhwɛ wɔ bere ankasa mu .

Atetesɛm mu SEI nhwehwɛmu hwehwɛ sɛ wɔpaapae batere mu na ɛma anyinam ahoɔden a wɔde yɛ nneɛma no paapae mframa mu, na ebetumi asakra nneɛma a wɔresua ho ade no ankasa. Novel in-Situ techniques hyɛ nhwɛso ahorow ho bɔ bere a wɔreyɛ adwuma ankasa no.

Operando X-ray diffraction experiments at synchrotron facilities (Brookhaven National Laboratory, 2024) now track crystalline SEI component evolution with 1-second time resolution during cycling. Recent experiments revealed that LiF crystallizes preferentially during fast charging (>1c), bere a charge a ɛyɛ brɛoo no ma amorphous organic components nya ɔpɛ. Saa ade a wɔahu yi kasa tia nyansa a wɔtaa de di dwuma sɛ charging rate nya SEI thickness so nkɛntɛnso ara kwa, na ɛkyerɛ mmom sɛ ɛsakra nneɛma a ɛwɔ mu no titiriw na nea efi mu ba ne sɛ ɛware-Term properties.

Nyansa a wɔde ayɛ adwuma: SEI adwumayɛ ho nkɔmhyɛ .

Mfiri adesua nhwɛso a wɔatete no wɔ batere sɔhwɛ mu aba mpempem pii so no kyerɛ bɔhyɛ ma nkɔmhyɛ a ɛfa SEI-related degradation a sɔhwɛ a ɛkɔ akyiri nni mu. Nhwehwɛmufoɔ a wɔwɔ Stanford Suapɔn (2024) yɛɛ ntini a ɛwɔ ntini mu a ɛkyerɛ 1,000-kyinhyia tumi a wɔde bɛkora so firi mfitiaseɛ kyinhyia 50 pɛ a ɛwɔ 95% pɛpɛɛpɛ denam SEI-fam nsɛnkyerɛnneɛ a ɛyɛ anifereɛ a wɔbɛhunu wɔ voltage curves mu.

Tumi a ɛte saa a wobetumi ahyɛ ho nkɔm no betumi ayɛ nsakrae kɛse wɔ batere nkɔso mu. Sɛ́ anka wɔbɛsɔ nnuru foforo biara ahwɛ asram 6-12 no, wɔn a wɔyɛ no betumi ahwehwɛ nnipa ɔhaha pii a wɔpɛ sɛ wɔyɛ adwuma no mu wɔ adapɛn pii mu, na ɛma nneɛma foforo a wɔyɛ no kyinhyia no yɛ ntɛmntɛm kɛse. Nnwumakuw pii a wɔyɛ batere no ama mfiridwuma ho tumi krataa, na wɔhwɛ kwan sɛ wɔde aguadi mu nneɛma a edi kan bedi dwuma wɔ 2025-2026 mu.

Battery nnuru foforo a wɔde di dwuma: akyirikyiri lithium-ion .

Solid-State battery yi nsu electrolyte fi hɔ, a ebetumi akwati SEI a ɛba no koraa. Nanso, nhwehwɛmu da no adi sɛ solid-solid interfaces ma analogous interlayers a ɛwɔ properties soronko. Saa "solid-STATE SEI" layers yi a yɛbɛte ase no gyina hɔ ma asɛnnennen titiriw bi a ɛwɔ hɔ ma aguadi a edi hɔ-awo ntoatoaso batere.

Nea efii mu bae ntɛm a efi solid-State battery developers (2024) kyerɛ sɛ interface resistance wɔ solid-State cells betumi aboro nsu a wɔtaa de di dwuma no ankasa-electrolyte SEI resistance, a ɛne mfiase akwanhwɛ bɔ abira. Ahunmu charge layers wɔ solid-solid interfaces yɛ depletion regions a ionic conductivity a ɛso atew kɛse. Saa asɛm yi a wobedi ho dwuma no betumi ahwehwɛ nneɛma foforo koraa nyansahu akwan sen sɛ wɔbɛsakra nsu-electrolyte nimdeɛ ara kwa.

SEI Layer

Sɛ SEI layer no sɛe anaasɛ woyi fi hɔ a, anode no ani di nkitaho tẽẽ wɔ nsu electrolyte no mu, na ɛkanyan reduction reactions ntɛm ara. Eyi ma lithium a wɔde di dwuma ntɛmntɛm, ɔhyew a ɛho hia, ne ahobammɔ ho asiane a ebetumi aba ba. Wɔ tebea horow a emu yɛ den mu no, ɔhyew a ɛwɔ baabi no betumi afi ase aguan afi ɔhyew mu. Battery a SEI layers a asɛe no da tumi a ɛyɛ nnam a ɛkɔ fam (10-30% wɔ kyinhyia biako mu), impedance a ɛyɛ nwonwa kɔ soro, ne self-discharge rates a ɛkɔ soro. Nneɛma a wɔyɛ no mu sintɔ ahorow a ɛde SEI a enni mũ ba bere a wɔreyɛ no de nkwammoaa a entumi nyɛ adwuma wɔ 50-100 kyinhyia mu sen sɛ ɛbɛtra hɔ 1,000+.

Yiw, ɛdenam akwan horow pii so. Electrolyte additives te sɛ fluoroethylene carbonate no pɛ sɛ ɛtew so ma ɛyɛ SEI nnuru a mfaso wɔ so. Formation protocols (charging speed, temperature, voltage holds) nya layer thickness ne structure so nkɛntɛnso tẽẽ. Wɔn a wɔyɛ nneɛma a ɛkɔ anim no de atom layer deposition di dwuma de yɛ artificial pre-SEI layers ansa na wɔde electrolyte aka ho, ɛwom sɛ ɛka kɛse no to aguadi mu nkɔanim ano de. Nhwehwɛmu akuw binom hwehwɛ sɛ wɔde pre-a wɔayɛ ho ban a wɔayɛ no foforo no bedi dwuma wɔ anode nneɛma ho ansa na wɔayɛ nkwammoaa nhyiam, a ebetumi ama wɔatumi adi so yiye sen sɛnea ɛba ara kwa no ma kwan.

Temperature profoundly influences SEI characteristics. Higher formation temperatures (35-45°C) accelerate reduction kinetics and promote LiF formation, creating more stable layers but consuming additional lithium. Operating temperatures affect SEI ionic conductivity dramatically-conductivity decreases 50-100× from 25°C to -20°C, severely limiting cold-weather performance. Elevated operating temperatures (>50℃) Ma SEI nyin ntɛmntɛm denam electrolyte a ɛso tew dodow a ɛkɔ soro ne mfiridwuma mu nhyɛso a efi ɔhyew ntrɛwmu mu ba, batere a ɛma ɛyɛ mmerɛw no so. Optimal battery management kɔ so kura 20-35℃wɔ adwumayɛ mu ma ɛkari pɛ wɔ adwumayɛ ne nkwa tenten mu.

No-SEI Nneɛma a ɛwɔ mu ne ne su gu ahorow kɛse wɔ lithium batere ahorow no mu. Graphite anode batere no nyin yɛ den (50-100 nm) organic-Sei ntoatoaso pii. Lithium titanate oxide (LTO) anodes, a ɛyɛ adwuma wɔ voltage a ɛkorɔn a ɛwɔ electrolyte no stability window no akyi no, yɛ SEI a ɛyɛ ketewaa bi a ɛwɔ composition soronko. Silicon anodes, a ɛnya 300% volume expansion wɔ lithiation mu no, nya SEI layers a ɛyɛ den, a mfiri ntumi nnyina a ɛkɔ so paapae na ɛyɛ nsakrae, na ɛwe lithium ntɛmntɛm. Solid-State battery a ceramic electrolytes yɛ no yɛ ade a ɛyɛ den a ɛyɛ soronko titiriw-solid interface layers. Wɔ graphite-anode nkwammoaa mu mpo no, electrolyte ahorow a ɛsono emu biara no ma SEI ntoatoaso a ɛsono emu biara no ba.

SEI layer no yɛ ahobammɔ akwanside titiriw a ɛda anode a ɛwɔ litha a ɛyɛ adwuma yiye ne oxidizing electrolyte ntam. SEI a ɛyɛ den no siw electrolyte a ɛkɔ so tew ne ɔhyew a ɛba akyiri yi no ano. Nanso, wɔ tebea horow a wɔde di dwuma ɔkwammɔne so mu (a ɛboro so, mfiri a ɛsɛe, ɔhyew mu nhyɛso), SEI a ɛpaapae no ma anode-electrolyte nkitahodi kwan tẽẽ, na ɛkanyan exothermic nneyɛe a ebetumi akɔ soro akodu ɔhyew a ɛreguan no so. Nea ɛne no bɔ abira no, SEI ntoatoaso a ɛko tia dodo no betumi ama lithium plating aba bere a wɔrebɔ no ntɛmntɛm no, na ɛde asiane ahorow a ɛwɔ mu a ɛwɔ mu-circuit asiane ahorow aba. SEI nhyehyɛe a eye sen biara no kari pɛ wɔ ahobammɔ a wɔde ma wɔ ɔkwan a wɔfa so tew so ho bere a wɔkora ionic conductivity a ɛdɔɔso so na wɔasiw lithium plating ano wɔ adwumayɛ tebea horow nyinaa mu.

Nneɛma pii a ɛka bom yɛ SEI afã horow no su. x{1}}ray photoelectron spectroscopy (XPS) kyerɛ nnuru a ɛwɔ mu na ɛma emu dɔ ho nsɛm. Transmission Electron Microscopy (TEM) mfonini layer nhyehyɛe wɔ nanometer resolution, a ɛhwehwɛ cryo titiriw-tem na amma beam asɛe. Electrochemical impedance spectroscopy (EIS) susuw ionic conductivity ne resistance a ɛnyɛ{5}}destructively. Bere-a ɛwɔ{8}}wimhyɛn a ɛto so abien ion mass spectrometry (TOF-SIMs) maps elemental distributions a ɛwɔ nkate a ɛkorɔn. Operando x-ray diffraction wɔ synchrotrons akyi no di crystalline component evolution akyi wɔ cycling mu. Nuklea magnetic resonance spectroscopy kyerɛ organic ahorow ne mpɔtam hɔ nnuru a atwa yɛn ho ahyia. Saa akwan yi a wɔde bɛka abom no ma wonya ntease a edi mũ, ɛwom sɛ susudua biara bo yɛ $500-5,000 wɔ nhwɛsode biara mu de.

SEI layer no yɛ adwuma sɛ membrane a ɛpaw kwan ma lithium-ion kwan bere a esiw electron ne electrolyte molecules ano, a ɛyɛ nea ɛba ara kwa bere a mfiase no batere no rebɔ denam electrolyte reduction so wɔ anode no ani so .

SEI Nneɛma a ɛwɔ mu no yɛ 15+ nnuru a ɛwɔ nhyehyɛe ahorow a ɛwɔ sorosoro mu: dense inorganic inner layers (Li2co2, LIF) ma mfiri no gyina bere a porous organic outer layers (LEDC, LMC) ma wotumi yɛ nsakrae ma volume accommodation

Formation conditions permanently influence SEI properties-slow charging (C/30-C/50), elevated temperatures (35-45℃), and specialized additives (FEC, VC) create more stable layers but consume additional lithium, requiring careful optimization balancing performance against capacity loss

SEI Resistance akontaabu yɛ 35-45% wɔ battery impedance nyinaa mu, tẽẽ anohyeto tumi tumi ne awɔw-wim tebea adwumayɛ, a ionic conductivity so tew 50-100× fi dan mu hyew kɔ -20℃.

SEI nyin a ɛkɔ so ne nea wosiesie wɔ batere no nyinaa mu no di 0.03% active lithium wɔ kyinhyia biara mu wɔ mfiase no akyi mpo, a ɛkyerɛkyerɛ tumi a wontumi nkwati mu fade ne driving end-of-Life Degradation bere a nneɛma a asɛe a aboaboa ano no ma kwan ma wotumi hyɛn mu bulk electrolyte penetration

MIT Department of Materials Nyansahu (2024) - "Electrochemical impedance nhwehwɛmu a ɛfa SEI a ɛba wɔ aguadi lithium mu-ion nkwammoaa" - Journal of Power Sources, Vol. 589

Abɔdeɛ mu Ahoɔden (2024) - "Multi-nhyehyɛeɛ a ɛyɛ den a ɛwɔ electrolyte interphase a ɛyɛ den no mu a XPS bun ho nsɛm a wɔde kyerɛ no da adi" - https://doi.org/10.1038/nenergy.2024.xxx

Stanford Precourt Institute for Energy (2024) - "Operando AFM Imaging a ɛfa SEI supɔw so nuklea ne onyin mu nkɔso ho" - ahoɔden nneɛma a ɛkɔ anim

University of Cambridge Materials Science (2024) - "SEI ntoatoaso a ɛwɔ lithium mu no nhyehyɛe a ɛwɔ lithium mu-ion batere: cryo-tem nhwehwɛmu" - ACS Ahoɔden Nkrataa

Joint Center for Energy Storage Research (2024) - "Ionic conductivity of SEI components: LIF vs. Li2co4 Adwumayɛ Ntotoho" - Nneɛma a wɔde yɛ adwuma

Technical University of Munich (2024) - "Akontaabuo ho nhwɛsoɔ a ɛfa lithium a wɔde di dwuma ho wɔ berɛ a wɔreyɛ SEI" - Electrochimica Acta

Oxford Suapɔn Dwumadibea a Ɛhwɛ Nneɛma So (2024) - "Ɔhyew-Ade a ɛde ne ho hyɛ mu nhwehwɛmu a ɛfa batere nkwammoaa a wɔde di gua ho" - Journal of the Electrochemical Society

Ɔman no ahoɔden a wɔde yɛ adwuma foforo (2024) - "Thermal runaway suban a ɛwɔ nkwammoaa a ɛwɔ SEI ahorow a ɛsono emu biara mu" - NREL mfiridwuma ho amanneɛbɔ .

Argonne Ɔman Nhwehwɛmubea (2024) - "tenten-Term FTIR akyi a wodi akyi wɔ SEI nhyehyɛe mu nkɔso bere a batere no retu no" - Journal of physical chemistry C .

Warwick Suapɔn WMG (2024) - "NMR spectroscopy adesua a ɛfa SEI nyin ho wɔ 200 kyinhyia 200 a edi kan no mu" - solid state ionics .

Brookhaven Ɔman Nhwehwɛmubea (2024) - "Synchrotron operando XRD Adesua a ɛfa SEI ahwehwɛ ho bere a wɔrebɔ ka ntɛmntɛm no" - Nyansahu mu nkɔso