Bateri za Lithium-ion zirimo gutera imbere cyane mu cyerekezo cy’ubucucike bw’ingufu nyinshi. Mu bushyuhe bw’icyumba, ibikoresho bya electrode negatif bishingiye kuri silikoni bivangavanze na lithium kugira ngo bikore product Li3.75Si ikungahaye kuri lithium, ifite ubushobozi bwihariye bugera kuri 3572 mAh/g, buruta cyane ubushobozi bwihariye bwa electrode negatif ya grafiti 372 mAh/g. Ariko, mu gihe cyo kongera no gusohora ibikoresho bya electrode negatif bishingiye kuri silikoni, ihinduka rya phase rya Si na Li3.75Si rishobora kwagura ingano nini (hafi 300%), bizatuma ibikoresho bya electrode bihinduka ifu kandi bigakomeza gushingwa kwa SEI, kandi amaherezo bigatuma ubushobozi bugabanuka vuba. Inganda zinoza cyane imikorere y’ibikoresho bya electrode negatif bishingiye kuri silikoni no kudahungabana kwa bateri zishingiye kuri silikoni binyuze mu bunini bwa nano-size, gusiga karuboni, gushingwa kwa pore n’ubundi buryo bw’ikoranabuhanga.
Ibikoresho bya karuboni bifite ubushobozi bwo gutwara ibintu neza, bihendutse, kandi bifite amasoko menshi. Bishobora kunoza uburyo ibikoresho bishingiye kuri silicon bitwara ibintu neza kandi bigakomeza guhagarara neza. Bikoreshwa cyane nk'inyongera zo kunoza imikorere ya electrode za silicon. Ibikoresho bya silicon-carbon ni byo byerekezo nyamukuru by'iterambere rya electrode za silicon zitwara ibintu neza. Gusiga karuboni bishobora kunoza uburyo ibikoresho bishingiye kuri silicon biguma bihagarara neza, ariko ubushobozi bwabyo bwo kubuza ubwinshi bwa silicon ni rusange kandi ntibishobora gukemura ikibazo cyo kwaguka kw'ingano ya silicon. Kubwibyo, kugira ngo ibikoresho bishingiye kuri silicon bikomeze guhagarara neza, hagomba kubakwa inyubako zifite imyenge. Gusya umupira ni uburyo bw'inganda bwo gutegura ibikoresho bya nanomaterials. Inyongera zitandukanye cyangwa ibice by'ibikoresho bishobora kongerwa ku myenge biboneka hakoreshejwe umupira hakurikijwe ibisabwa mu gishushanyo cy'ibikoresho bivanze. Umwonge ukwirakwira neza mu buryo bungana binyuze mu myenge itandukanye hanyuma ukamumishwa. Mu gihe cyo kumisha ako kanya, uduce duto n'ibindi bice biri muri uwo mwonge bizahita bikora imiterere y'imiterere ifite imyenge. Iyi nyandiko ikoresha ikoranabuhanga ryo gusya umupira mu nganda no kumisha spray kugira ngo itegure ibikoresho bishingiye kuri silicon bifite imyenge.
Imikorere y'ibikoresho bishingiye kuri silicon ishobora kandi kunozwa binyuze mu kugenzura imiterere n'imiterere y'ibicuruzwa bya silicon nanomaterials. Kuri ubu, ibikoresho bishingiye kuri silicon bifite imiterere itandukanye n'imiterere y'ibicuruzwa, nka silicon nanorods, graphite nanosilicon ishyizwemo porous, nanosilicon ikwirakwizwa mu duce twa karuboni, imiterere y'ibicuruzwa bya silicon/graphene array, nibindi. Ku gipimo kimwe, ugereranije n'uduce duto, nanosheets zishobora gukumira neza ikibazo cyo gusya giterwa no kwaguka k'ingano, kandi ibikoresho bifite ubucucike bwinshi. Guhuza neza nanosheets bishobora no gukora imiterere y'ibicuruzwa. Kugira ngo winjire mu itsinda rya silicon negative electrode exchange. Tanga umwanya wo gufunga kugira ngo ingano y'ibikoresho bya silicon irusheho kwaguka. Kwinjizwa kwa nanotubes za karuboni (CNTs) ntibishobora gusa kunoza imikorere y'ibikoresho, ahubwo binateza imbere ishyirwaho ry'imiterere y'ibicuruzwa bitewe n'imiterere yabyo y'imiterere imwe. Nta raporo zihari ku miterere y'ibicuruzwa byubatswe na silicon nanosheets na CNTs. Iyi nyandiko ikoresha uburyo bwo gusya umupira, gusya no gukwirakwiza, gusukura imirasire, gusiga karuboni mbere yo gusiga no gukaranga, kandi ishyiramo ibikoresho bitanga imyenge mu gutegura ibikoresho bya electrode bifite imyenge ya silikoni bikozwe no kwishyira hamwe kwa silicon nanosheets na CNTs. Uburyo bwo gutegura ni ubworoshye, butangiza ibidukikije, kandi nta mazi cyangwa ibisigazwa by'imyanda bitangwa. Hari raporo nyinshi z'inyandiko ku gusiga karuboni ku bikoresho bishingiye kuri silikoni, ariko hari ibiganiro bike byimbitse ku ngaruka zo gusiga. Iyi nyandiko ikoresha asphalt nk'isoko ya karuboni kugira ngo isuzume ingaruka z'uburyo bubiri bwo gusiga karuboni, gusiga amavuta no gusiga ibintu bikomeye, ku ngaruka zo gusiga no gukora ibikoresho bya electrode bifite imyenge ya silikoni.
Igerageza rya 1
1.1 Gutegura ibikoresho
Gutegura ibikoresho bya silikoni-karubone bifite imyobo bikubiyemo ahanini intambwe eshanu: gusya umupira, gusya no gukwirakwiza, kumisha spray, gusiga karuboni mbere yo gusiga no gushyira karuboni mu karuboni. Ubwa mbere, pima garama 500 z'ifu ya silikoni y'ibanze (yo mu rugo, 99.99% by'ubuziranenge), ongeramo garama 2000 za isopropanol, hanyuma ukoreshe gusya umupira w'amazi ku muvuduko wo gusya umupira wa 2000 r/min mu gihe cy'amasaha 24 kugira ngo ubone slurry ya silikoni ifite ingano nto. Slurry ya silikoni iboneka yimurirwa mu kigega cyo koherezamo, hanyuma ibikoresho byongerwaho hakurikijwe ingano ya silikoni: grafiti (yakorewe i Shanghai, urwego rwa bateri): nanotubes za karuboni (zakorewe i Tianjin, urwego rwa bateri): polyvinyl pyrrolidone (yakorewe i Tianjin, urwego rw'isesengura) = 40:60:1.5:2. Isopropanol ikoreshwa mu guhindura ingano ikomeye, kandi ingano ikomeye yagenewe kuba 15%. Gusya no gukwirakwiza bikorwa ku muvuduko wo gukwirakwiza wa 3500 r/min mu gihe cy'amasaha 4. Hari irindi tsinda ry'ibice by'amazi bidashyizeho CNTs, kandi ibindi bikoresho ni bimwe. Ibice by'amazi byabonetse byimurirwa mu gikoresho cyo kumisha amazi, hanyuma gusya bikorerwa mu kirere kirinzwe na azote, ubushyuhe bw'aho binjirira n'aho bisohokera bukaba 180 na 90 °C, uko bikurikirana. Hanyuma hagereranyijwe ubwoko bubiri bw'ibice by'amazi bya karuboni, ibice by'amazi byashyizwemo umwuka n'ibice by'amazi. Uburyo bwo gusya ibintu by'amazi ni: ifu yumye ivangwa n'ifu ya asphalt ya 20% (yakorewe muri Koreya, D50 ni 5 μm), ivangwa mu cyuma givangavanga iminota 10, kandi umuvuduko wo kuvanga ni 2000 r/min kugira ngo haboneke ifu isanzwe. Uburyo bwo gusya ibintu by'amazi ni: ifu yumye ishyirwa mu cyuma cya xylene (cyakorewe muri Tianjin, urwego rw'isesengura) kirimo 20% by'ibice by'amazi bishongeshejwe mu ifu ku gipimo gikomeye cya 55%, hanyuma ifu ikavangwa neza. Teka mu ifuru idafite umwuka kuri dogere 85°C mu gihe cy'amasaha 4, ushyire mu cyuma gikoresha imashini ivangavanga, umuvuduko wo kuvanga ni 2000 r/min, naho igihe cyo kuvanga ni iminota 10 kugira ngo ubone ifu isanzwe. Amaherezo, ifu isanzwe yashyizwe mu itanura rizunguruka munsi y'ikirere cya azote ku gipimo cy'ubushyuhe cya dogere 5°C/min. Yabanje kubikwa ku bushyuhe budahinduka bwa dogere 550°C mu gihe cy'amasaha 2, hanyuma ikomeza gushyuha kugeza kuri dogere 800°C ikaguma ku bushyuhe budahinduka mu gihe cy'amasaha 2, hanyuma ikonjeshwa mu buryo busanzwe kugeza munsi ya dogere 100°C hanyuma irasohoka kugira ngo haboneke ibikoresho bya silikoni-karuboni.
1.2 Uburyo bwo kugaragaza ibimenyetso
Ingano y'ibice by'ibikoresho yasesenguwe hakoreshejwe icyuma gipima ingano y'ibice (Mastersizer 2000 verisiyo, yakorewe mu Bwongereza). Ifu yabonetse muri buri ntambwe yapimwe hakoreshejwe mikorosikope ya elegitoroniki (Regulus8220, yakorewe mu Buyapani) kugira ngo harebwe imiterere n'ingano y'ifu. Imiterere y'icyiciro cy'ibikoresho yasesenguwe hakoreshejwe isesengura rya X-ray powder diffraction (D8 ADVANCE, yakorewe mu Budage), kandi imiterere y'ibikoresho yasesenguwe hakoreshejwe isesengura rya energy spectrum. Ibikoresho bya silikoni-karuboni byabonetse byakoreshejwe mu gukora akabuto k'igice cy'akaremangingo ka CR2032, kandi igipimo cy'uburemere bwa silikoni-karuboni: SP: CNT: CMC: SBR cyari 92:2:2:1.5:2.5. Electrode yo kugabanya ni urupapuro rwa lithiyumu rw'icyuma, electrolyte ni electrolyte ikoreshwa mu bucuruzi (icyitegererezo cya 1901, cyakorewe muri Koreya), diaphragm ya Celgard 2320 ikoreshwa, ingano ya voltage yo gushyushya no gusohora ni 0.005-1.5 V, charge n'umuvuduko wo gusohora ni 0.1 C (1C = 1A), naho amashanyarazi yo gusohora ni 0.05 C.
Mu rwego rwo gukomeza gusuzuma imikorere y’ibikoresho bya silikoni-karuboni, hakozwe bateri ntoya yoroshye ifite laminated 408595. Electrode nziza ikoresha NCM811 (yakorewe muri Hunan, urwego rwa bateri), kandi grafiti ya electrode mbi iterwamo 8% bya silikoni-karuboni. Formula ya electrode nziza ni 96% NCM811, 1.2% polyvinylidene fluoride (PVDF), 2% conductive agent SP, 0.8% CNT, na NMP ikoreshwa nk'isasanya; formula ya electrode mbi ni 96% bya electrode mbi, 1.3% CMC, 1.5% SBR 1.2% CNT, kandi amazi akoreshwa nk'isasanya. Nyuma yo gukangura, gusiga, kuzungurutsa, gukata, gusuka, gusudira, gupakira, guteka, gutera amazi, gutandukanya ubushobozi, gushyiraho no kugabanya ubushobozi, hateguwe bateri ntoya zoroshye 408595 zifite ubushobozi bwa 3 Ah. Ingano y'umuvuduko wa 0.2C, 0.5C, 1C, 2C na 3C hamwe n'imikorere ya cycle ya 0.5C charge na 1C deletion byarageragejwe. Intera y'umuvuduko wa charge na deletion yari 2.8-4.2 V, umuvuduko wa volteji uhoraho na volteji ihoraho, naho umuvuduko wa closure wari 0.5C.
2 Ibisubizo n'ibiganiro
Ifu ya silikoni ya mbere yagaragaye hakoreshejwe mikorosikope ya elegitoroniki (SEM). Ifu ya silikoni yari ifite ingano idasanzwe ifite ingano y'uduce turi munsi ya 2μm, nk'uko bigaragara ku Ishusho ya 1 (a). Nyuma yo gusya umupira, ingano y'ifu ya silikoni yagabanutse cyane igera kuri 100 nm [Ishusho ya 1 (b)]. Isuzuma ry'ingano y'uduce ryagaragaje ko D50 y'ifu ya silikoni nyuma yo gusya umupira yari 110 nm naho D90 yari 175 nm. Isuzuma ryitondewe ry'imiterere y'ifu ya silikoni nyuma yo gusya umupira rigaragaza imiterere y'uduce (imiterere y'imiterere y'uduce izagenzurwa cyane uhereye kuri SEM isanzwe). Kubwibyo, amakuru ya D90 yavuye mu isuzuma ry'ingano y'uduce agomba kuba uburebure bw'urupapuro rwa nano. Hamwe n'ibyavuye muri SEM, bishobora gufatwa nk'aho ingano y'urupapuro rwa nano rwabonetse ari ntoya ugereranyije n'agaciro k'ingenzi ka 150 nm k'ivunika rya silikoni mu gihe cyo gusya no gusohora nibura ingano imwe. Ishingwa ry'imiterere y'urusobe rw'ibintu biterwa ahanini n'ingufu zitandukanye zo kwitandukanya kw'imirongo ya kristu ya silicon ya kristu, muri zo kristu ya kristu ifite ingufu nke zo kwitandukanya kurusha kristu ya ...
Igitonyanga kirimo nano-silicon, CNT na grafiti cyarasutswe, hanyuma ifu mbere na nyuma yo gusukwa yasuzumwe na SEM. Ibisubizo bigaragara ku Ishusho ya 2. Grafiti matrix yongeweho mbere yo gusukwa ni imiterere isanzwe y'udusimba ifite ingano ya 5 kugeza kuri 20 μm [Ishusho ya 2 (a)]. Ikizamini cy'ingano y'udusimba cya grafiti kigaragaza ko D50 ari 15 μm. Ifu yabonetse nyuma yo gusukwa ifite imiterere y'uruziga [Ishusho ya 2 (b)], kandi bigaragara ko grafiti itwikiriwe n'urwego rwo gusiga nyuma yo gusukwa. D50 y'ifu nyuma yo gusukwa ni 26.2 μm. Imiterere y'udusimba twa kabiri yagaragaye na SEM, igaragaza imiterere y'imiterere y'udusimba duto yakusanyijwe n'ibikoresho bya nanomaterials [Ishusho ya 2 (c)]. Imiterere y'udusimba igizwe n'udupapuro twa silikoni na CNTs bifatanye [Ishusho ya 2 (d)], kandi ubuso bwihariye bw'ikizamini (BET) bungana na 53.3 m2 / g. Bityo rero, nyuma yo gutera, impapuro za silikoni nanosheets na CNTs byishyira hamwe kugira ngo bikore imiterere ifite imyenge.
Urusobe rw'amazi rwatunganyijwe hakoreshejwe irangi rya karuboni, hanyuma nyuma yo kongeramo irangi rya karuboni n'irangi rya karuboni, hakozwe isuzuma rya SEM. Ibisubizo bigaragara ku Ishusho ya 3. Nyuma yo gusiga karuboni, ubuso bw'uduce twa kabiri buba bwiza, hamwe n'urusobe rw'amazi rugaragara, kandi irangi riba ryuzuye, nk'uko bigaragara ku Mashusho ya 3 (a) na (b). Nyuma yo gusiga karuboni, urusobe rw'amazi rugumana imiterere myiza yo gusiga [Ishusho ya 3 (c)]. Byongeye kandi, ishusho ya SEM yerekana uduce duto dufite ishusho y'imirongo [Ishusho ya 3 (d)], duhuye n'imiterere y'udupapuro duto, birushaho kwemeza ikorwa ry'udupapuro duto twa silicon nyuma yo gusya umupira. Byongeye kandi, Ishusho ya 3 (d) igaragaza ko hari utwuzuza hagati y'udupapuro duto. Ibi biterwa ahanini no gukoresha uburyo bwo gusiga karuboni. Umuti wa asphalt uzinjira mu bikoresho, ku buryo ubuso bw'udupapuro duto twa silicon imbere bubona urwego rwo kurinda karuboni. Bityo rero, hakoreshejwe irangi ry’amazi, uretse kubona ingaruka zo gusiga uduce duto, ingaruka zo gusiga karuboni ebyiri z’irangi ry’ibanze zishobora no kuboneka. Ifu ya karuboni yapimwe na BET, kandi ibisubizo by’ikizamini byari 22.3 m2/g.
Ifu ya karuboni yakozweho isesengura ry’ingufu zikoresha ikoranabuhanga (EDS), kandi ibisubizo bigaragara ku Ishusho ya 4 (a). Ishingiro ringana na mikoroni ni igice cya C, gihuye na matrix ya grafiti, kandi igipfundikizo cyo hanze kirimo silikoni na ogisijeni. Kugira ngo hakorwe ubushakashatsi ku miterere ya silikoni, hakozwe ikizamini cya X-ray diffraction (XRD), kandi ibisubizo bigaragara ku Ishusho ya 4 (b). Ibikoresho bigizwe ahanini na graphite na silikoni imwe y’ikirahure, nta miterere ya silikoni igaragara, bigaragaza ko igice cya ogisijeni cy’ikizamini cy’ingufu gikomoka ahanini ku gushonga karemano k’ubuso bwa silikoni. Ibikoresho bivanze bya silikoni na karuboni byanditswe nka S1.
Ibikoresho bya silikoni na karuboni byateguwe S1 byakorewe ibizamini byo gukora igice cy’uturemangingo two mu bwoko bwa buto no gupima uburyo bwo gusohora umuriro. Umurongo wa mbere wo gusohora umuriro ugaragara ku Ishusho ya 5. Ubushobozi bwihariye bwo gusubira inyuma ni 1000.8 mAh / g, kandi ubushobozi bwo gusohora umuriro bwa mbere bugera kuri 93.9%, ari na bwo buri hejuru y’ubushobozi bwa mbere bw’ibikoresho byinshi bishingiye kuri silikoni bitarimo litiation yavuzwe mu nyandiko. Ubushobozi bwa mbere bwo hejuru bwerekana ko ibikoresho bya silikoni na karuboni byateguwe bifite ubusugire bwinshi. Kugira ngo harebwe ingaruka z’imiterere y’imyenge, urusobe rw’amashanyarazi n’ubusugire bwa karuboni ku busugire bw’ibikoresho bya silikoni na karuboni, hateguwe ubwoko bubiri bw’ibikoresho bya silikoni na karuboni hatabayeho kongeramo CNT kandi hatabayeho ubusugire bwa karuboni bw’ibanze.
Imiterere y'ifu ya karuboni y'ibikoresho bya silikoni-karuboni bidashyizeho CNT igaragara ku Ishusho ya 6. Nyuma yo gusiga no gusiga karuboni, urwego rwo gusiga rushobora kugaragara neza ku buso bw'uduce twa kabiri ku Ishusho ya 6 (a). SEM y'ibikoresho bya karuboni igaragara ku Ishusho ya 6 (b). Gushyira hamwe kw'udupapuro twa silikoni bifite imiterere y'imyenge, kandi ikizamini cya BET ni 16.6 m2 / g. Ariko, ugereranije n'ikizamini cya CNT [nk'uko bigaragara ku Ishusho ya 3 (d), ikizamini cya BET cy'ifu yayo ya karuboni ni 22.3 m2 / g], ubucucike bw'imbere bwa nano-silicon buruta, bigaragaza ko kongeramo CNT bishobora gutuma habaho imiterere y'imyenge. Byongeye kandi, ibikoresho ntibifite umuyoboro w'amashanyarazi wubatswe na CNT. Ibikoresho bya silikoni-karuboni byanditswe nka S2.
Imiterere y’imiterere y’ibikoresho bya silikoni-karuboni byateguwe hakoreshejwe irangi rya karuboni rikozwe mu buryo bufatika igaragara ku Ishusho ya 7. Nyuma yo gukaruboni, hari urwego rugaragara rwo gukaraba ku buso, nk’uko bigaragara ku Ishusho ya 7 (a). Ishusho ya 7 (b) igaragaza ko hari uduce duto dufite ishusho y’imirongo mu gice cy’umurambararo, bihuye n’imiterere y’udupapuro duto. Guteranya udupapuro duto tugize imiterere ifite imyenge. Nta cyuzuza kigaragara kiri ku buso bw’udupapuro duto tw’imbere, bigaragaza ko irangi rya karuboni rikozwe mu buryo bukomeye rikora gusa urwego rwo gukaraba rufite imyenge, kandi nta urwego rwo gukaraba ruri imbere rw’udupapuro duto twa silikoni. Iyi mashini ikozwe muri silikoni-karuboni yanditswe nka S3.
Ikizamini cyo gusohora ingufu z’amashanyarazi n’ikizamini cyo gusohora ingufu z’amashanyarazi cyakozwe kuri S2 na S3. Ubushobozi bwihariye n’ubushobozi bwa mbere bwa S2 byari 1120.2 mAh/g na 84.8%, uko bikurikirana, naho ubushobozi bwihariye n’ubushobozi bwa mbere bwa S3 byari 882.5 mAh/g na 82.9%, uko bikurikirana. Ubushobozi bwihariye n’ubushobozi bwa mbere bw’icyitegererezo cya S3 cyari gitwikiriwe n’ikizamini cya mbere nibyo byari bike cyane, bigaragaza ko hakozwe gusa irangi rya karuboni ry’imiterere y’imyenge, kandi irangi rya karuboni ry’imbere rya silicon nanosheets ntiryakozwe, ibyo bikaba bitashoboraga guha imbaraga zuzuye ubushobozi bwihariye bw’ibikoresho bishingiye kuri silicon kandi ntibyashoboraga kurinda ubuso bw’ibikoresho bishingiye kuri silicon. Ubushobozi bwa mbere bw’icyitegererezo cya S2 kitarimo CNT nabwo bwari hasi ugereranyije n’ubw’ibikoresho bya silicon-carbon composite birimo CNT, bigaragaza ko hashingiwe ku urwego rwiza rwo gutwikira, umuyoboro w’amashanyarazi n’imiterere y’imyenge yo hejuru bituma irangi rirushaho kunozwa no gusohora ingufu z’ibikoresho bya silicon-carbon.
Ibikoresho bya silikoni-karuboni bya S1 byakoreshejwe mu gukora bateri ntoya yuzuye kugira ngo harebwe imikorere y’umuvuduko n’imikorere y’uruziga. Umuvuduko w’umu ... Igipimo cyo gushyushya cya 1C ni 96.7%, naho igipimo cyo gushyushya cya 2C kiracyagera kuri 84.3%. Ariko, urebye uko icyuma gishyushya cyashyizwe mu ishusho ya 8(b), icyuma gishyushya cya 2C ni kinini cyane ugereranyije n'icyuma gishyushya cya 1C, kandi ubushobozi bwacyo bwo gushyushya bwa voltage idahinduka bugizwe na benshi (55%), bigaragaza ko polarization ya bateri ya 2C ishobora kongera gushyushya yamaze kuba nini cyane. Ibikoresho bya silikoni-karuboni bifite imikorere myiza yo gushyushya no gutanga amashanyarazi kuri 1C, ariko imiterere y'ibikoresho igomba kunozwa kurushaho kugira ngo bigere ku muvuduko wo hejuru. Nkuko bigaragara ku ishusho ya 9, nyuma y'amasaha 450, igipimo cyo kugumana ubushobozi ni 78%, bigaragaza imikorere myiza y'uruziga.
Imiterere y'ubuso bwa electrode mbere na nyuma y'uruziga yasuzumwe na SEM, kandi ibisubizo bigaragazwa ku Ishusho ya 10. Mbere y'uruziga, ubuso bwa grafiti na silicon-carbon buba busobanutse [Ishusho ya 10 (a)]; nyuma y'uruziga, urwego rwo gutwikira rugaragara ku buso [Ishusho ya 10 (b)], ari firime nini ya SEI. Ubukana bwa firime ya SEI Ikoreshwa rya lithium rikora riri hejuru, ritafasha mu mikorere y'uruziga. Kubwibyo, guteza imbere ikorwa rya firime ya SEI yoroshye (nk'iyubakwa rya firime ya SEI y'ubukorano, kongeramo inyongera za electrolyte zikwiye, nibindi) bishobora kunoza imikorere y'uruziga. Isuzuma rya SEM ry'uduce twa silicon-carboni nyuma y'uruziga [Ishusho ya 10 (c)] rigaragaza ko uduce twa siliconi tw'umwimerere dufite ishusho y'umurongo twarushijeho kuba twinshi kandi imiterere y'uduce twakuweho. Ibi ahanini biterwa no kwaguka no guhindagurika kw'ingano y'ibikoresho bya silicon-carboni mu gihe cy'uruziga. Kubwibyo, imiterere y'uduce twa siliconi igomba kongerwamo imbaraga kugira ngo haboneke umwanya uhagije wo kwaguka kw'ingano y'ibikoresho bishingiye kuri siliconi.
3 Umwanzuro
Hashingiwe ku kwaguka k'ingano, ubushobozi buke bwo gutwara ibintu hamwe n'uburyo ibintu bya electrode mbi bishingiye kuri silicon bihagaze nabi, iyi nyandiko ikora impinduka zigamije, kuva ku miterere y'ibishushanyo mbonera bya silicon nanosheets, imiterere y'imiterere y'imashini, imiterere y'urusobe rw'amashanyarazi n'imyambaro yuzuye ya karuboni ku bice byose bya kabiri, kugira ngo hongerwe uburyo ibikoresho bya electrode mbi bishingiye kuri silicon muri rusange bihagaze neza. Ukwiyongera kw'imashini za silicon nanosheets bishobora gukora imiterere y'imashini. Kwinjizwa kwa CNT bizarushaho guteza imbere ikorwa ry'imiterere y'imashini. Ibikoresho bya silicon-carbon composite byateguwe hakoreshejwe imashini y'amazi bifite ingaruka ebyiri zo gutwikira karuboni kuruta ibyateguwe hakoreshejwe imashini ikomeye, kandi bigaragaza ubushobozi bwihariye n'imikorere ya mbere. Byongeye kandi, ubushobozi bwa mbere bw'ibikoresho bya silicon-carbon composite birimo CNT buri hejuru kuruta ubudafite CNT, ahanini biterwa n'ubushobozi bwinshi bw'imiterere y'imashini zo gutwikira ibintu bishingiye kuri silicon. Kwinjizwa kwa CNT bizubaka urusobe rw'imashini z'amashanyarazi rufite imiterere itatu, binoze uburyo ibintu bishingiye kuri silicon bihagaze neza, kandi bigaragaze imikorere myiza kuri 1C; kandi ibikoresho bigaragaza imikorere myiza y'ingendo. Ariko, imiterere y'ibikoresho ifite imyenge igomba gukomeza gukomezwa kugira ngo haboneke umwanya uhagije wo kwagura ingano ya silikoni, kandi biteze imbere ikorwa ry'umuyoboro woroshye.na filimi nini ya SEI kugira ngo birusheho kunoza imikorere y'ibikoresho bya silikoni-karuboni.
Dutanga kandi ibicuruzwa bya grafiti na silicon carbide bifite isuku nyinshi, bikoreshwa cyane mu gutunganya wafer nka oxidation, diffusion, na annealing.
Murakaza neza abakiriya bose baturutse impande zose z'isi baza kudusura kugira ngo tuganireho byinshi!
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Igihe cyo kohereza: Ugushyingo-13-2024