Kedu ihe bụ Silicon anodes?
Silicon anodes bụ akụrụngwa batrị ebe silicon na-anọchi ma ọ bụ na-agbakwunye graphite ọdịnala dị ka ihe bụ isi maka ịchekwa ion lithium na batrị lithium{0}}. Silicon na-enye ikike echiche nke ihe dịka 3,600 ruo 4,200 mAh/g- ihe dị ka ugboro 10 dị elu karịa graphite's 372 mAh/g. Nke a na-eme silicon ka ọ bụrụ ihe kacha ewu ewu maka batrị ọgbọ na-abịa{10} nke na-eme ka ụgbọ ala eletrik, smartphones, na sistemụ nchekwa ike.
Kedu ihe kpatara Silicon ji dị mkpa maka teknụzụ batrị
Nkwagide na-aga na silicon sitere na njedebe bụ isi na teknụzụ batrị ugbu a. Graphite anodes eruola n'uko ụlọ ikike ha, na-emepụta ihe mgbochi maka ngwa na-achọ njupụta ume dị elu na ogologo ogologo.
Silicon na-edozi nke a site na usoro nchekwa lithium ya pụrụ iche. Atọm silicon nke ọ bụla nwere ike jikọta ya na atom lithium 3.75 (na-akpụ Li₃.₇₅Si), ma e jiri ya tụnyere graphite ebe otu lithium atom chọrọ carbon carbon isii (LiC₆). Atọmịka-ọkwa a na-atụgharị asụsụ ozugbo na batrị na-echekwa ike karịa n'otu olu.
Mmetụta azụmahịa dị ukwuu. Maka ụgbọ ala eletrik, silicon anodes nwere ike mee ka ọnụọgụ 500-mile na-enweghị ịbawanye nha batrị. Maka ngwa eletrọnịkị ndị ahịa, ndị na-emepụta ihe nwere ike imepụta ngwaọrụ dị gịrịgịrị nwere ndụ batrị ogologo. Atụmanya ahịa na-egosipụta ikike a: ahịa ihe silicon anode zuru ụwa ọnụ ruru ihe dị ka nde $ 827 na 2024 ma na-ebu amụma na ọ ga-eto $ 19.6 ijeri site na 2033, na-anọchite anya ọnụego uto kwa afọ nke 42.1%.
Ihe ịma aka Mgbasawanye olu
Ikike dị elu nke silicon na-abịa na nsogbu injinia dị oke egwu: mmụba oke oke n'oge okirikiri chaja. Mgbe ion lithium na-etinye n'ime silicon n'oge ịchaji (usoro a na-akpọ lithiation), silicon na-agbasa site na ihe dịka 300-400% nke olu mbụ ya. N'iji ya tụnyere, graphite na-agbasa naanị ihe dịka 10%.
Nnukwu mgbasawanye a na-ebute nnukwu nsogbu. Nrụgide arụrụ arụ na-eme ka ụmụ irighiri ihe silik gbawa na ịkwatu, na-emebi njikọ eletrik n'etiti ihe na-arụ ọrụ na onye nchịkọta ugbu a. Ụgwọ ọ bụla - okirikiri mkpofu na-ebute mgbawa ọhụrụ, na-eji nke nta nke nta na-ekewapụta ụmụ irighiri silicon na sekit eletriki. Ụdị silicon anode nke mbụ tụfuru ọtụtụ ike ha n'ime naanị usoro chaja 10, na-eme ka ha ghara ịzụ ahịa.
Mgbasawanye ahụ na-emebikwa interphase electrolyte siri ike (SEI) - oyi akwa nchekwa na-etolite n'elu anode. Na batrị graphite a na-ahụkarị, SEI na-eme ka ọ kwụsie ike mgbe okirikiri nke mbụ gasịrị. Site na silicon, mgbasawanye na nkwekọrịta ugboro ugboro na-agbaji ma na-agbanwe SEI, na-eri ion lithium na electrolyte na okirikiri ọ bụla. Nnyocha site na iji X- nyocha mgbasa ozi ray chọpụtara na ihe dị ka 35% nke carbonates a kpụrụ na SEI na-agbaze n'oge a na-agbaze mmiri, ebe 17% nke lithium na-adagide kpamkpam n'ime mkpụrụ osisi silicon ndị a kwụsịrị mgbe okirikiri nke mbụ gachara.
Nsogbu mgbasawanye olu achịkwala nyocha silicon anode ihe karịrị afọ iri abụọ. Na-enweghị usoro mbelata dị irè, uru atụmatụ silicon ka enweghị ike ịnweta maka ngwa azụmahịa.
Ngwọta Injinia maka Nsogbu Mgbasa Silicon
Ndị nyocha na ụlọ ọrụ ewepụtala ụzọ dị iche iche iji jikwaa mgbasawanye olu, nke ọ bụla nwere azụmaahịa pụrụ iche{0} n'etiti arụmọrụ, ọnụ ahịa, yana mgbagwoju anya nrụpụta.
Nanostructuring
Ibelata urughuru silicon na nanoscale na-emepụta mpaghara elu karịa yana ụzọ mgbasa ozi dị mkpụmkpụ maka ion lithium. Silicon nanoparticles (nke na-abụkarị 10-100 nanometers) na-anabata mgbasawanye nke ọma karịa nnukwu silicon n'ihi na nje na-ekesa nke ọma n'obere mpịakọta.
Silicon nanowires na-anọchi anya otu ụzọ nanostructure na-aga nke ọma. Amprius Teknụzụ sụrụ ụzọ 100% silicon nanowire anodes nke na-eto n'akụkụ onye na-anakọta ugbu a. Ihe owuwu a na-enye ohere nanowire ọ bụla ịgbasa radially na-etinyeghị aka na ndị agbata obi, na-ejigide kọntaktị eletrik n'oge ịgba ígwè. Amprius kọrọ njupụta ike nke 435 Wh/kg n'elu ikpo okwu SiCore ha, dị elu karịa batrị graphite na-emekarị na 250-280 Wh/kg.
Ihe ịma aka na nanostructuring bụ n'ichepụta ọnụ ọgụgụ na ọnụ ahịa. Ịmepụta otu nanostructures chọrọ usoro ọkaibe nke na-abawanye ọnụ ahịa mmepụta nke ọma ma e jiri ya tụnyere nhazi graphite.
Silicon- Ngwakọta carbon
Ijikọ silicon na ihe carbon na-anọchite anya ụzọ kacha mma maka azụmaahịa ugbu a. Matriks carbon na-enye nkwado igwe, na-ejigide conductivity eletrik, na-emepụta oghere efu nke na-anabata mgbasawanye silicon.
Teknụzụ Group14 rụpụtara silicon{1}} carbon composite akpọrọ SCC55 site na iji usoro ihe eji arụ ọrụ. Ihe ndị dị n'ọkụ carbon na-edobe silicon n'ime oghere dị n'ime ha, na-enye ụlọ mgbasawanye ma na-ejigide iguzosi ike n'ezi ihe. Ihe a na-enyere aka ruo 50% njupụta ume dị elu ma e jiri ya tụnyere anodes graphite dị ọcha wee nweta ikike ikike 80% n'okpuru 5 nkeji n'oge ule. Ka ọ na-erule ngwụsị 2024, ihe karịrị 1 nde smartphones na-eji teknụzụ Group14 abanyela n'ahịa site na mmekorita ya na ndị nrụpụta dị ka Honor.
Oke sịlịkọn {{0}na{1}} carbon na-emetụta arụmọrụ. Ọdịnaya silicon dị ala (5-15% n'ịdị arọ) na-ebelata okwu mgbasawanye mana ọ na-enye naanị nkwalite ikike. Ọdịnaya silicon dị elu (30-50%) na-enye njupụta ume ka mma mana ọ chọrọ injinia ọkaibe karịa iji jikwaa nrụgide ọrụ. Ngwaahịa azụmaahịa dị ugbu a na-eji silicon 10-20% n'ịdị arọ, na-edozi uru arụmọrụ megide chọrọ ndụ okirikiri.
Usoro mkpuchi mkpuchi na mkpuchi
Ihe mkpuchi mkpuchi na-emepụta ihe nchekwa n'etiti ihe ndị dị na silicon na electrolyte, na-eme ka oyi akwa SEI na-ebelata ma na-ebelata ikike. Ihe mkpuchi carbon na-adịkarị, mana metal oxides, polymers, na graphene na-egosipụtakwa nkwa.
Ndị na-eme nchọpụta na Mahadum Stanford gosipụtara microparticles silicon ndị etinyere na shells graphene nke na-egbochi mgbaji ma na-ejigide iguzosi ike n'ezi ihe n'oge ịnya igwe. The graphene na-enye ma n'ibu nkwado na a kwụsiri ike SEI interface. Ihe ndị a nwetara ikike dị nso 3,300 mAh / g na ndụ okirikiri ka mma ma e jiri ya tụnyere silicon efu.
Sila Nanotechnologies na-eji ụzọ mkpuchi mkpuchi dị iche iche nke nwere silicon nanoparticles etinyere n'ime mkpọ carbon. Ihe owuwu nke scaffold na-enye ohere ka silicon gbasaa n'ọkwa uru ahụ ma na-egbochi ọzịza ọkwa electrode{1}. Ngwaahịa azụmahịa mbụ nke Sila bidoro na Whoop 4.0 nke na-ahụ maka ahụike na 2021, ụlọ ọrụ ahụ esorola Mercedes{{5}Benz rụkọọ ọrụ iji tinye teknụzụ ya na G-Klas SUV site na 2026.
Ihe mgbakwunye electrolyte
Mgbanwe kemịkalụ electrolyte na-enye ụzọ ọzọ maka imeziwanye arụmọrụ silicon anode na-agbanweghị usoro ihe eji arụ ọrụ. Ihe mgbakwunye dị ka fluoroethylene carbonate (FEC) na vinylene carbonate na-enyere aka ịmepụta ọkwa SEI kwụsiri ike nke na-anabata mgbanwe olu.
Lithium difluoro(bisoxalato) phosphate (LiDFBOP) egosila otu nkwa. Nnyocha chọpụtara na mgbakwunye 2% LiDFBOP na-emepụta oyi akwa SEI na-agbanwe agbanwe yana nnabata dị mma maka mgbasawanye silicon. SEI emezigharịrị na-eme njem ụgbọ njem lithium ion edo edo karịa, na-ebelata nrụgide dị n'ime yana idobe iguzosi ike n'ezi ihe site na ịgba ígwè.
Ụdị Silicon Anode na nhazi
Azụmahịa na mmepe silicon anodes dabara n'ụdị dị iche iche dabere na ọdịnaya silicon na ụzọ nhazi.
Silicon anodes dị ala (5-15% silicon):Ngwakọta ndị a na-anọchi anya mmejuputa silicon azụmahịa mbụ. Ịtinye obere silicon na graphite anodes na-enye nkwalite ikike 10-20% yana nkwụsịtụ obere usoro nrụpụta dị ugbu a. Ndị isi na-emepụta batrị gụnyere Panasonic na LG ewepụtala ngwakọta silicon dị ala n'ime ụfọdụ batrị ụgbọ ala eletrik. Tesla kwadoro na 2015 na batrị Model S nwere ihe mgbakwunye silicon nke mụbara nso site na ihe dịka 6%.
Ọkara-Silicon Anodes (silịkọn 20-50%):Otu a na-elekwasị anya uru arụmọrụ dị ịrịba ama ka ọ na-ejigide ndụ okirikiri ezi uche dị na ya. Ụlọ ọrụ dị ka Enevate na NanoGraf na-elekwasị anya na nso a, na-eji usoro nanostructuring dị iche iche na ihe mejupụtara. Ihe owuwu silicon alloy nke NanoGraf na-eme ka ọla kwụsie ike n'oge a na-echaji ma na-agbapụta ya, na-enyere otu n'ime ike kachasị ike n'ụwa{2}} 18650 lithium sel{4}} ion.
High-Silicon Anodes (>70% silicon):Nhazi ndị a na-ebute njupụta ike kachasị maka ngwa ebe ibu na olu dị oke mkpa{{0}Aerospace, Defense, na elu{1}} ngwa eletrọnịkị ndị ahịa na-arụ ọrụ. Amprius na Enovix na-edu otu a. Nrụpụta cell 3D nke Enovix nwere ọdịnaya silicon dị elu nwetara njupụta ume volumetric karịrị 900 Wh/L na nhazi cell EX-1M ha.
Silicon{{0}Ọchịchọ siri ike{1}}State Anodes:Otu na-apụta na-ejikọta silicon anodes na electrolytes siri ike kama ịbụ mmiri electrolytes. Usoro steeti siri ike{1} na-ewepụ ọtụtụ nsogbu ndakọrịta mmiri electrolyte nke gbochiri mmepe silicon anode. Mmekọrịta 2021 n'etiti UC San Diego na LG Energy Solutions gosipụtara silicon anode siri ike - batrị steeti nwere 99.9% silicon site na ịdị arọ, na-ejigide ikike karịrị 80% mgbe okirikiri 500 gachara. Sulfide siri ike electrolyte na-emepụta otu igwe kwụsiri ike{9} ụgbọ elu nwere silicon nke na-anabata mgbasawanye olu karịa mmiri electrolytes.
Mmepe azụmahịa na ntinye ahịa
Teknụzụ Silicon anode tụgharịrị site na nyocha ụlọ nyocha gaa na mmepụta azụmahịa n'oge 2024-2025, yana ọtụtụ ụlọ ọrụ ruru ogo nrụpụta.
Mgbasawanye ikike mmepụta
Ikike mmepụta zuru ụwa ọnụ maka silicon{0}nwere ihe anode gafere 500 gigawatt{2}} awa na njedebe nke 2024, na-anọchi anya mmụba 234% site na 2023. Ọsọ ọsọ a na-egosipụta ntụkwasị obi na-eto eto na azụmahịa silicon anode.
Sila Nanotechnologies na-ewu ụlọ 20 GWh na Moses Lake, Washington, na-atụ anya na ọ ga-emepụta ihe anode zuru ezu maka ụgbọ ala eletrik 1 nde kwa afọ mgbe arụ ọrụ zuru oke. Ụlọ ọrụ a na-arụ ọrụ ụgbọ elu ugbu a na Alameda, California, ma nwetakwa mmekọrịta ya na ndị isi ụgbọ ala gụnyere Mercedes -Benz na BMW.
Group14 Teknụzụ na-arụ ọrụ 10 GWh na South Korea site na njikọ aka ya na SK Materials, na mmepụta na-amalite na mbubreyo 2024. Ụlọ ọrụ US nke abụọ (BAM-2) na Moses Lake, Washington, ga-agbakwunye ikike 20 GWh. Group14 kọrọ na-ebuga SCC55 ihe karịrị 100 EV yana ndị na-emepụta batrị n'ụwa niile site na Septemba 2024.
Amprius Teknụzụ gbagoro ihe owuwu Fremont, California site na kilowatt{0}}awa ruo megawatt{1}} ike elekere na 2023. Ụlọ ọrụ ahụ nwetara ihe karịrị $20 nde na nkwekọrịta maka sel arụmọrụ 40Ah dị elu{{5}, na mbupu na-amalite na 2024.
Ngwa akpaaka
Ndị na-anya ụgbọ ala etinyela aka na teknụzụ silicon anode maka ụdị ụgbọ ala eletrik na-abịa. General Motors jikọtara ya na OneD Batrị Sciences iji tinye silicon nanowires n'ime sel batrị GM's Ultium. Ụzọ OneD na-etinye silicon nanowires n'ime ntụ ntụ graphite, na-ezubere njupụta ume ike 350 Wh/kg na 80% na-akwụ ụgwọ n'ime ihe na-erughị nkeji 10 na ọnụahịa agbakwunyere n'okpuru $2 kwa kilowatt-hour.
Porsche tinyere ego na Teknụzụ Group14 nwere atụmatụ itinye silicon -carbon anodes n'ime ụgbọ ala eletrik na-amalite na 2025. Mmekọrịta a na-achọ ịnye batrị ma ọ dịkarịa ala 600,000 EV kwa afọ ozugbo mmepụta zuru ezu malitere.
Mercedes{{0}Benz kwuputara njikọta nke Sila Nanotechnologies' silicon anode material na G-Klas SUV site n'afọ 2026, na-atụpụta nkwalite ike batrị 10-15%. Nke a na-esote nkwupụta BMW na mbụ gbasara atụmatụ ndị yiri ya.
N'October 2024, POSCO Group rụchara ụlọ ọrụ silicon anode na Pohang, South Korea, nwere ikike 550{2}} kwa afọ zuru ezu iji kwado ụgbọ ala eletrik 275,000. Ụlọ ọrụ ahụ na-anọchi anya usoro mmepụta silicon anode zuru ezu nke POSCO, site na ihe ndị mbụ site na mmepụta ihe mejupụtara ikpeazụ.
Ntinye eletrọnịkị ndị ahịa
Ngwa eletrọnịkị ndị ahịa nyere teknụzụ silicon anode mbubata ahịa dị mkpa n'ihi nha batrị pere mpe yana nnabata ọnụahịa adịchaghị. The Whoop 4.0 ihe nleba anya mgbatị ahụ, nke ewepụtara na Septemba 2021, ghọrọ ngwaahịa mbụ{3} ahịa site na iji ihe silicon anode nke Sila, na-egosipụta ndụ batrị 20% n'otu ụdị.
Honor's Magic7 Pro smartphone, ewepụtara na ngwụcha afọ 2024, nwere batrị sịlịkọn{2}} na-eji ngwa Group14's SCC55 nwere ikike ruru 5,850 mAh- dị elu karịa ngwaọrụ ndị yiri ya na-eji anodes.
N'ọnwa Mee 2025, TDK Corporation kwuputara ngwangwa nke -ọgbọ silicon anode batrị na-amalite na-ezubere iche akụkụ ekwentị dị elu{2}. Companylọ ọrụ ahụ chọrọ ijikọ teknụzụ silicon anode n'ime ngwaọrụ flagship n'oge 2025-2026.
Njirimara arụmọrụ yana azụmaahịa-
Ezigbo arụmọrụ silicon anode zuru ụwa ọnụ na-ekpughe ma uru dị ukwuu yana oke ndị fọdụrụ ma e jiri ya tụnyere ntọala graphite.
Enweta Njupụta Ike
Ngwaahịa silicon anode nke azụmahịa na-egosipụta nkwalite njupụta ike 20-50% na ọkwa cell, n'agbanyeghị na nke a adabaghị uru 10x nke silicon n'ihi nkwekọrịta injinia dị mkpa. SiCore nke Amprius na-enweta njupụta ike gravimetric nke 360-435 Wh / kg dabere na nhazi, ma e jiri ya tụnyere 250-280 Wh / kg maka sel graphite dị elu. Mmelite njupụta ike volumetric sitere na 30-50%, na-eme ka ngwugwu batrị kọmpat karịa maka ikike nhata.
Ike Nchaji ngwa ngwa
Silicon anodes na-egosi ngwa ngwa na-ekwe nkwa - njirimara chaja. Ihe Group14's SCC55 nwetara steeti 80% nke ụgwọ n'okpuru nkeji 5 n'oge nnwale ya na ndị nrụpụta batrị. Enevate's silicon-batrị ndị bụ isi gosipụtara 80% chaja n'ime ihe dịka nkeji iri n'ime igwe eletriki igwe ọkụ Lightning Motorcycles, na-enye ihe dị ka kilomita 220.
Nchaji emelitere sitere na ọnụọgụ mgbasa lithium dị elu nke silicon yana ihe arụrụ arụ arụrụ arụ nke na-ebelata ohere mgbasa. Agbanyeghị, ịchaji ngwa ngwa na-eme ka okwu mgbasawanye olu ka njọ, na-achọ nguzozi nke ọma n'etiti ọnụego nchaji na ndụ okirikiri.
Ihe ịma aka ndụ okirikiri
Ndụ okirikiri ka na-abụ oke njedebe nke silicon anodes. Ọ bụ ezie na batrị graphite na-enwetakarị 1,000-3,000 cycles tupu ha erute njide ikike 80%, batrị silicon anode na-egosipụtakarị okirikiri 300-1,000 dabere na ọdịnaya silicon na ọnọdụ ọrụ.
Ọdịnaya silicon dị elu na-emetụtakarị ndụ okirikiri mbelata. Akwụkwọ Amprius na-egosi na batrị ya na-enweta cycles 300 na omimi zuru oke nke mwepu, mana ndụ okirikiri na-akawanye mma na omimi mwepu akụkụ. Ịrụ ọrụ na 30% omimi nke mwepu karịa 100% nwere ike ịgbatị ndụ okirikiri site na ọtụtụ narị okirikiri.
Mmetụta okpomọkụ na-emetụtakwa ndụ okirikiri. Silicon anodes adịghị arụ ọrụ nke ọma n'okpuru ogo 0 ma na-eweda ngwa ngwa karịa ogo 45 ma e jiri ya tụnyere graphite. Kalịnda ịka nká{4}}mfu ike n'oge nchekwa{5}} na-aga n'ihu ngwa ngwa na batrị silicon anode, n'agbanyeghị na usoro ndị na-adịbeghị anya emeela nke ọma. Nnyocha ụlọ nyocha nke Argonne chọpụtara na ndụ batrị silicon anode ka dị mma site n'ihe dị ka otu afọ afọ ise gara aga ruo amụma afọ 5-10 na teknụzụ ugbu a.
Atụmatụ nchekwa
Njupụta ume dị elu na-etinyekwu ume n'otu olu, nwere ike ịbawanye ogo ịgba ọsọ ọkụ. Nnwale ụlọ ọrụ injinia Exponent chọpụtara na ka ikike mkpụrụ ndụ silicon anode na-abawanye, otu ahụ ka ihe omume na-agba ọsọ na-ekpo ọkụ na-abawanye n'ihi ọdịnaya ike dị elu. Nke a na-akpaghasị atụmatụ mkpọ batrị, na-achọ njikwa ọkụ siri ike na sistemu njide.
Ụzọ siri ike{{0}Sọlịkọn anode steeti nwere ike inye uru nchekwa. Ndị electrolytes siri ike na-ewepụ electrolyte mmiri na-enwu ọkụ, na-ebelata ihe egwu ọkụ. Agbanyeghị, teknụzụ steeti siri ike{3} na-eche ihe ịma aka nrụpụta na ọnụ ahịa aka nke buterela azụmaahịa zuru ebe niile.
Atụmatụ akụ na ụba na nrụpụta
Ọnụ ego na nrụpụta scalability na-ekpebi ike azụmahịa nke teknụzụ silicon anode dị ka arụmọrụ teknụzụ.
Ọnụ ihe onwunwe
Silicon n'onwe ya bara ụba ma dịkwa ọnụ ala-ọ bụ ihe nke abụọ a na-ahụkarị na eriri ụwa. Agbanyeghị, ịhazi silicon ka ọ bụrụ batrị{2}}ihe ọkwa ọkwa nwere ịdị ọcha kwesịrị ekwesị, nha nha, na nhazi ya na-agbakwunye nnukwu ọnụ ahịa. Ihe silicon anode ugbu a na-eri ihe dị ka $20-50 kwa kilogram ma e jiri ya tụnyere $10-15 kwa kilogram maka graphite.
Ọnụ ego a na-eri na-agbada na ọkwa cell. Ebe ọ bụ na silicon na-enye ikike dị elu kwa gram, obere ihe achọrọ maka nchekwa ike nhata. Ụlọ ọrụ dị ka OneD Batrị Sayensị na-ekwu na mgbakwunye silicon nanowire ha na-eri ihe n'okpuru $2 kwa kilowatt{3}}awa na cell larịị-obere abawanye na mkpokọta ọnụ batrị.
Ọnụ ahịa nrụpụta na-adịgasị iche site n'ụzọ. Silicon nanowires chọrọ ntunye uzuoku pụrụ iche ma ọ bụ usoro uto kemịkalụ bụ isi obodo{1}} siri ike. Ngwakọta sịlịkọn- carbon composites na-eji ngwa agwakọta na mkpuchi ihe nwere ike itinye akụrụngwa n'ichepụta batrị dị ugbu a, na-ebelata ihe ndị isi obodo chọrọ yana ịkwalite azụmaahịa.
Ndakọrịta nrụpụta
Ndakọrịta na ahịrị nrụpụta batrị lithium{0}ion dị na-emetụta usoro oge nkuchi azụmahịa. Ụzọ na-achọ ngwa mmepụta ọhụrụ kpamkpam na-eche ogologo oge mmepe ogologo na ọnụ ahịa ego dị elu.
Ngwakọta ọdịnaya silicon dị ala- ruo{1}} na-adaba n'ime usoro nrụpụta dị ugbu a yana obere mgbanwe. Ndị na-emepụta batrị nwere ike iji mkpuchi, kalenda, na ngwa mgbakọ cell dochie silicon{3}} ngwakọta carbon maka graphite dị ọcha. Ndakọrịta a na-akọwa ihe kpatara silicon -carbon composites nwere 10-30% ọdịnaya silicon ji erute ahịa ngwa ngwa karịa silicon dị elu ma ọ bụ silicon dị ọcha na-abịaru nso.
Silikoni anodes dị ọcha na ụfọdụ ihe owuwu ụlọ dị elu chọrọ akụrụngwa pụrụ iche. Usoro uto nanowire nke Amprius na-eji ahịrị mmepụta ihe nke na-adakọghị na nrụpụta lithium ọkọlọtọ{1}}Ion. Ọ bụ ezie na nke a na-emepụta ihe mgbochi asọmpi, ọ na-amachikwa ohere mmekọrịta na ndị na-emepụta batrị guzosie ike ma na-ebelata scaling.
Mmepe Chain Nkwanye
Anya ọkọnọ silicon anode na-apụta mana ọ ka na-eto eto karịa ụdọ ọkọnọ anode graphite. Ọtụtụ ihe silicon anode ugbu a na-abịa site na ụlọ ọrụ mmalite pụrụ iche karịa ndị na-ebubata ihe. Ka ọchịchọ na-eto, ụlọ ọrụ kemịkalụ na ihe ọdịnala na-abanye n'ahịa.
Metallurgical {{0}Silicon grade{1} nke emepụtara n'ọtụtụ buru ibu maka ụlọ ọrụ semiconductor na nke anyanwụ{2}} na-enye nri nwere ike ịdị ọnụ ala-. Coreshell, mmalite mpaghara Bay, meriri ihe nrite $1 nde na mmalite 2024{7}Elu iko mba ụwa maka ịmepụta silicon anodes ọla maka ụgbọ ala eletrik, na-eleba anya kpọmkwem ihe mgbochi ọnụ ahịa. Ụzọ ha na-eji silicon metallurgical silikoni enwetara n'ụlọ na azụmahịa{9}}ọnụ ọgụgụ 60 Ah, nwere ike ibelata ịdabere na ụdọ ọkọnọ silicon a nụchara anụcha.
Silicon Anodes na Lithium{0}}Ihe ndị bụ isi nke batrị Ion
Iji ghọta ihe kpatara silicon anodes na-anọchite anya ọganihu dị ukwuu, anyị kwesịrị ibu ụzọ zaa:Kedu ihe bụ batrị lithium ionteknụzụ na kedu ka o si arụ ọrụ? Ịghọta silicon anodes chọrọ ọnọdụ gbasara ka batrị lithium{0}ion si arụ ọrụ na ọkwa dị mkpa.
Batrị Lithium{0}ion na-echekwa ma wepụta ike site na mmeghachi omume kemịkalụ nwere ike ịtụgharị. N'oge a na-apụ apụ, ion lithium na-esi na anode na-esi na electrolyte gaa na cathode, ebe electrons na-aga site na sekit dịpụrụ adịpụ gaa na ngwaọrụ ike. N'oge ịchaji, usoro a na-atụgharị: ọkụ eletrik na-ebughachi ion lithium na anode ebe echekwara ha.
Ọrụ anode bụ nnabata lithium ion n'oge ị na-ebufe ma na-ahapụ ha n'oge a na-ahapụ ya. Graphite na-arụzu nke a site na njikọta{1} lithium ions na-adaba n'etiti glafit n'ụdị kristal graphite. Usoro a na-amachi ikike n'ihi na nhazi nke graphite nwere ike ịnweta naanị otu lithium atom kwa carbon carbon isii.
Silicon na-echekwa lithium site na alloying kama ịgbakọ ọnụ. Atọm lithium jikọtara ya na atom silicon, na-akpụ lithium{1}}silicon alloys (LixSi ebe x sitere na 0 ruo 3.75). Usoro alloy a na-enye ohere nchekwa lithium dị elu karịa otu nkeji ọ bụla, na-akọwa ikike echiche silicon kachasị elu.
Ihe anode na-arụ ọrụ n'akụkụ akụkụ batrị ndị ọzọ n'ime usoro achikọtara. The cathode - na-abụkarị lithium metal oxide dị ka lithium nickel manganese cobalt oxide (NMC){2}} na-enye ion lithium ma na-anabata eletrọn n'oge a na-awụpụ ya. Eletrọt ahụ na-eduzi ion lithium mana ọ bụghị elektrọn, na-ejigide nkewa ụgwọ. Ihe nkesa nwere oghere na-ekewa anode na cathode n'ụzọ anụ ahụ ebe ọ na-enye ohere njem ionic.
Silicon anodes ga-abanyerịrị n'ime usoro a n'emebighị ọrụ akụkụ ndị ọzọ. Nsogbu mgbasawanye olu na-aghọ ihe ịma aka karịsịa n'ihi na ọ na-emetụta mgbakọ electrode dum, ọ bụghị naanị ihe ndị dị na silicon. Mgbasawanye na-agbagọ ihe owuwu porous nke na-enyere aka ịbanye electrolyte, na-egwepịa ihe mgbakwunye carbon nke na-enye conductivity, ma na-eme ka ihe nkedo polymer na-ejikọta ihe niile.
Ntuziaka na ihe ịma aka fọdụrụ
Teknụzụ silicon anode na-aga n'ihu na-agbanwe ngwa ngwa, yana ọtụtụ ụzọ mmepe na-egosi nkwa maka nkwalite ọgbọ na-abịa{{0}.
Ọdịnaya Silicon dị elu
Ngwaahịa azụmaahịa dị ugbu a na-eji silicon 10{4}} 30% n'ịdị arọ, na-ahapụ nnukwu ohere maka mmelite. Nnyocha na-elekwasị anya n'ịkwado ọdịnaya silicon 50-80% ka ị na-ejigide ndụ okirikiri anabatara. Ihe ịga nke ọma ga-eweta arụmọrụ ọkwa cell nso na uru usoro iwu silicon.
Ụzọ iji nweta ọdịnaya silicon dị elu dabere na ọganihu na-aga n'ihu na nanostructuring, nhazi ihe mejupụtara, na kemistri electrolyte. Ụfọdụ ndị nchọpụta na-achụso usoro nhazi usoro na-ejikọta ọtụtụ akpịrịkpa ogologo{1} silikoni nanoparticles agbakwunyere na microscale carbon, dịka ọmụmaatụ{2} iji kesaa nrụgide n'ibu nke ọma.
Usoro mmalite
Silicon anodes na-eri nnukwu lithium n'oge nhazi mbụ SEI, na-ebelata mbụ{{0} arụmọrụ okirikiri ruo 70-85% ma e jiri ya tụnyere 90-95% maka graphite. Ọnwụ ikike a na-apụghị ịgbagha agbagha na-emebi lithium site na cathode, na-ebelata njupụta ike batrị.
Prelithiation na-akwụ ụgwọ site n'itinye mgbakwunye lithium na anode tupu mgbakọ cell, na-emezi mfu nke mbụ{{0}. Usoro gụnyere mkpuchi lithium metal kpọmkwem, lithiation kemịkalụ na-eji ogige organolithium, na prelithiation electrochemical. Ọ bụ ezie na ọ na-aga nke ọma na teknụzụ, nhazi mbụ na-agbakwunye usoro nhazi na ọnụ ahịa, na-amachi nnabata na ngwa bara uru dị elu{{3}.
Ihe nkwekọ dị elu
Ihe nkedo polymer na-ejide ihe ndị na-arụ ọrụ na onye na-anakọta ugbu a na-arụ ọrụ enweghị ekele na arụmọrụ silicon anode. Ihe nkedo polyvinylidene fluoride (PVDF) na-emekọrịta ihe enweghị ike ịnabata mgbasawanye silicon, na-eduga na delamination na ike na-agwụ.
Nnyocha n'ime ndị na-ejikọta ndị ọkachamara achọpụtala ọtụtụ ndị na-ekwe nkwa. Polyacrylic acid (PAA) na carboxymethyl cellulose (CMC) na-etolite njikọ siri ike na silicon ma gbatịkwuo nke ọma n'oge mgbasawanye. Ụfọdụ ihe nkedo dị elu na-ejikọta onwe{2}}ọgwụgwọ ọrịa- ụdọ ụdọ polymer na-emezi njikọ mgbe agbajichara, na-ejigide iguzosi ike n'ezi ihe electrode site n'ọtụtụ okirikiri.
Mwekota steeti siri ike{{0}
Ijikọta silicon anodes na siri ike {{0}state electrolytes na-anọchi anya ụzọ nwere ike ịgbanwe. Ndị electrolytes siri ike na-ewepụ okwu ndakọrịta silicon na mmiri mmiri electrolytes ebe ha na-enye uru nchekwa dị iche iche. Batrị sịlịkọn siri ike{3} steeti nke UC San Diego na LG Energy Solutions gosipụtara na 2021 gosiri na interface siri ike electrolyte siri ike na-egbochi mgbasa silicon karịa electrolytes mmiri mmiri na-abanye n'ime mgbawa.
Agbanyeghị, batrị steeti siri ike - na-eche ihe ịma aka azụmaahịa nke ha ihu gụnyere mgbagwoju anya nrụpụta, nguzogide ihu na ọnụ ahịa ihe. Silicon anodes nwere ike banye siri ike - batrị steeti ma emechaa karịa sistemu electrolyte mmiri ara ehi.
Nhazi mgbakọ
Ịmụ igwe na ihe nlegharị anya na-eme ka mmepe silicon anode dịkwuo elu. Ndị na-eme nchọpụta na-eji ngụkọ ụkpụrụ arụ ọrụ njupụta iji buru amụma ihe mejupụtara SEI, simulations molecular dynamics simulations iji gosipụta nrụgide n'ibu, yana mmụta igwe iji bulie usoro ihe mejupụtara.
Ngwa ndị a na-ebelata nnwale{0}na{1}Nnwale njehie site n'ịchọpụta ngwakọta ihe na-ekwe nkwa tupu njikọta. Ha na-enyekwa nghọta n'ime usoro ọdịda nke siri ike ịhụ na nnwale, na-enye azịza ezubere iche.
Ajụjụ a na-ajụkarị
Kedu ka silicon anodes si atụnyere graphite anodes na ezigbo arụmọrụ ụwa{{0}?
Silicon anodes na-ebunye njupụta ume dị elu 20{2} 50% na ngwaahịa azụmaahịa, n'agbanyeghị na nke a adabaghị uru 10x usoro iwu n'ihi azụmaahịa injinia-. Ha na-eme ka chajị ọsọ ọsọ{7} na-erutekarị ikike 80% n'ime nkeji 5-15 - mana ugbu a na-enye ndụ okirikiri dị mkpụmkpụ, ọ na-abụkarị okirikiri 300-1,000 ma e jiri ya tụnyere 1,000-3,000 maka eserese. Ọnụ ego ka na-adị elu, n'agbanyeghị na ọnụ ahịa ya na-ebelata ka nrụpụta na-abawanye.
Kedu pasentị silicon ka ejiri na batrị azụmahịa ugbu a?
Ọtụtụ batrị silicon anode nke azụmahịa nwere silicon 10{5}}30% n'ịdị arọ, nke fọdụrụ bụ graphite na carbon. Grafite dị ọcha ka na-achị n'ahịa n'ozuzu ya. Ọdịnaya silicon dị ala na-edozi nkwalite arụmọrụ megide ndụ okirikiri yana ihe ịma aka nrụpụta. Ọdịnaya silicon dị elu (50-100%) dị na ngwa pụrụ iche dị ka ikuku ikuku mana ọ kabeghị nke ọma maka ngwaahịa ahịa ahịa.
Kedu ihe kpatara silicon ji gbasaa nke ukwuu n'oge ịchaji?
Silicon na-agbasawanye n'ihi na atom lithium na-ejikọta ya na atom silicon kama ịtinye naanị n'etiti ọkwa dịka na graphite. Mmeghachi omume alloy a na-etolite lithium{1} ngwakọta silicon (ruo Li₃.₇₅Si) nke na-ejide oke olu karịa silicon dị ọcha{3}} ihe dịka 300-400% mgbasa. Mgbasawanye ahụ nwere ike ịtụgharị ma na-emepụta nrụgide n'ibu nke na-emebi nhazi electrode n'ime usoro okirikiri ugboro ugboro.
Kedu mgbe ụgbọ ala eletrik silicon anode ga-adị ebe niile?
Ọtụtụ ndị na-emepụta ụgbọala na-eme atụmatụ ịmalite silicon anode EV n'etiti 2025{1}}2027. Mercedes{2}Benz kwuputara G-Class SUVs nwere Sila silicon anodes n'afọ 2026, ebe GM na-ejikọta teknụzụ OneD n'ime batrị Ultium. Porsche jikọtara ya na Group14 maka mbugharị 2025. Agbanyeghị, ngwaahịa mbụ ndị a ga-eji ọdịnaya silicon na-agafeghị oke (ikekwe 15-30%), yana ụdị silicon dị elu na-apụta ma emechaa n'ime afọ iri ka teknụzụ na-eto.
Ntụle ntinye na ntinye aka
Maka ụlọ ọrụ na ndị nchọpụta na-arụ ọrụ na teknụzụ silicon anode, ọtụtụ ihe bara uru na-ekpebi mmejuputa nke ọma.
Injinia elektrọn chọrọ ịhazi ọtụtụ mgbanwe. Oke urughuru silicon na-emetụta ma ebe obibi mgbasawanye yana conductivity eletrik. Obere irighiri ihe (nanoscale) na-ejikwa mgbasawanye nke ọma mana mepụta mpaghara elu maka nhazi SEI. Ọkpụrụkpụ elektrọn na-emetụta njupụta ume yana ike ọnụego-electrodes kariri na-echekwa ike karịa mana na-amachi ọsọ nchaji n'ihi ogologo njem ion dị ogologo.
Sistemu njikwa batrị chọrọ imelite maka batrị silicon anode. Ala {{1} nke - algọridim atụmatụ elele nke graphite nwere ike ọ gaghị arụ ọrụ nke ọma na silicon n'ihi akụkụ voltaji dị iche iche. Usoro chajị agbachapụrụ maka graphite nwere ike mee ka mbibi dị ngwa ngwa na batrị silicon. Nlekọta okpomọkụ na-adịkwa mkpa karịa n'ihi nhụta okpomọkụ nke silicon yana njupụta ume dị elu.
Ngwa -kpọmkwem na-ekpebi ọdịnaya silicon na nhazi batrị dabara adaba. Ngwa eletrọnịkị ndị ahịa nwere ike ịnabata ndụ okirikiri dị mkpụmkpụ (afọ 2-3) maka mgbanwe njupụta ume dị elu na chaja ngwa ngwa. Ụgbọ ala eletrik chọrọ ogologo ndụ okirikiri (afọ 8-10) ọbụlagodi na nke ahụ chọrọ ọdịnaya silicon dị ala. Nchekwa grid na-ebute ọnụ ahịa na ndụ okirikiri karịa ike ike, nwere ike igbochi uru silicon.
Nnwale na ụkpụrụ ntozu maka batrị silicon anode ka na-etolite. Nnwale batrị lithium ọdịnala{1} ion nwere ike ọ gaghị emesi silicon anodes ike nke ọma ma ọ bụ buru amụma ezi{2}} ụdị ọdịda ụwa. Usoro nnwale ọkaibe nke na-enyocha mmetụta mgbasawanye olu, nkwụsi ike SEI, na mmetụta okpomọkụ n'ofe ọtụtụ okirikiri na-enyere aka ịchọpụta nsogbu ndị nwere ike tupu azụmaahịa.
Nke a na-anọchi anya teknụzụ na-agbanwe agbanwe ebe omume kacha mma na-aga n'ihu na-etolite. Ndị nkuchi mbụ kwesịrị ịtụ anya nchacha ntugharị ka ahụmịhe bara uru na-agbakọta.
Silicon anodes na-egosi nzọụkwụ dị ịrịba ama na teknụzụ batrị, na-enye nnukwu ike ike yana nkwalite ọsọ ọsọ karịa graphite. Teknụzụ a na-enwe ọganihu site n'ọchịchọ ụlọ nyocha ruo n'eziokwu azụmahịa, yana ọtụtụ ụlọ ọrụ na-emepụta ihe silicon anode n'ọtụtụ na ndị na-emepụta isi na-ejikọta ha na ngwaahịa.
Ma silicon anodes abụghị ihe ngwọta zuru oke maka oke batrị niile. Mgbasawanye olu ka bụ isi ihe ịma aka nke chọrọ injinia ọkaibe iji jikwaa. Nkwalite ndụ okirikiri na-aga n'ihu, mana batrị silicon ka na-akwụsị graphite na ogologo ndụ. Ọnụ ego ọnụ ahịa na-aga n'ihu, n'agbanyeghị na ha na-ebelata dị ka ọnụ ọgụgụ mmepụta.
Ụzọ ezi uche dị na ya na-aga n'ihu gụnyere mmụba nke silicon nwayọọ nwayọọ ka ihe ngwọta na-eto. Batrị silicon 10-30% nke taa na-anọchi anya ngalaba nke mbụ. Ọdịnaya silicon dị elu ga-apụta n'ime ngwụcha afọ 2020 dị ka nhazi nanostructuring, nhazi ihe mejupụtara, na ọganihu kemịkalụ electrolyte. N'ikpeazụ, silicon anodes dị ọcha nwere ike ịba uru maka ngwa pụrụ iche, ebe ọdịnaya silicon na-agafeghị oke na-ejere ahịa ahịa.
Maka ụgbọ ala eletrik, ngwa eletrọnịkị ndị ahịa, na nchekwa grid, silicon anodes na-enye nkwalite bara uru na metrik arụmọrụ dị mkpa iji kwụsị ndị ọrụ: ogologo ogologo, chaja ngwa ngwa, yana ụdị ụdị dị nta. Uru bara uru ahụ -ọ bụghị oke usoro iwu{2}} ga-akwalite nnabata na ndozigharị teknụzụ silicon anode.
