Hano hari ibimenyetso byinshi bya tekiniki byerekana ibikoresho bya grafite anode, kandi biragoye kubyitaho, cyane cyane harimo ubuso bwihariye bwubuso, kugabana ingano yubunini, ubwinshi bwa kanda, ubwinshi bwikomatanya, ubwinshi bwukuri, kwishyurwa kwambere no gusohora ubushobozi bwihariye, gukora neza, nibindi. Mubyongeyeho, hari ibipimo byerekana amashanyarazi nkibikorwa byizunguruka, imikorere yikigereranyo, kubyimba, nibindi.None, ni ibihe bipimo byerekana imikorere ya grafite anode?Ibikurikira bikumenyeshwa na HCMilling (Guilin Hongcheng), uwakozeibikoresho bya anode urusyo.

01 ubuso bwihariye

Yerekeza ku buso bwikintu kuri buri gice.Gutoya ibice, nini nini yubuso bwihariye.

Electrode itari nziza hamwe nuduce duto hamwe nubuso bwihariye bwihariye bifite imiyoboro myinshi n'inzira ngufi zo kwimuka kwa lithium ion, kandi imikorere yikigereranyo ni nziza.Ariko, kubera ahantu hanini ho guhurira na electrolyte, agace ko gukora firime ya SEI nako nini, kandi imikorere yambere nayo izaba mike..Ibice binini, kurundi ruhande, bifite inyungu zo guhuza byinshi.

Ubuso bwihariye bwibikoresho bya grafite anode nibyiza kuba munsi ya 5m2 / g.

02 Ingano nini yo gukwirakwiza

Ingaruka yubunini bwibikoresho bya grafite anode kumikorere ya electrochemicique ni uko ingano yubunini bwibikoresho bya anode izagira ingaruka ku buryo butaziguye ubwinshi bwibikoresho hamwe nubuso bwihariye bwibintu.

Ingano yubucucike bwa robine izagira ingaruka ku buryo butaziguye ubwinshi bwingufu zingirakamaro yibikoresho, kandi gusa ingano ikwiranye nogukwirakwiza ibintu irashobora kugabanya imikorere yibikoresho.

03 Kanda Ubucucike

Ubucucike bwa robine ni ubwinshi kuri buri gipimo gipimwa no kunyeganyega bituma ifu igaragara muburyo bwo gupakira.Nikimenyetso cyingenzi cyo gupima ibikoresho bifatika.Ingano ya batiri ya lithium-ion ni nto.Niba igikuta cya kanda ari kinini, ibikoresho bikora kuri buri gice gifite ubwinshi, kandi ubushobozi bwijwi ni bwinshi.

04 Ubucucike

Ubucucike bwo guhuza cyane cyane kubice bya pole, bivuga ubucucike nyuma yo kuzunguruka nyuma yibintu bibi bya electrode ikora kandi binder ikozwe mubice bya pole, ubwinshi bwikomatanya = ubucucike bwakarere / (ubunini bwigice cya pole nyuma yo kuzunguruka ukuyemo ukuyemo umubyimba wa fayili y'umuringa).

Ubwinshi bwikomatanya bufitanye isano cyane nurupapuro rwihariye ubushobozi, imikorere, kurwanya imbere hamwe nibikorwa bya cycle.

Ingaruka ziterwa nubucucike: ingano yingingo, gukwirakwiza na morphologie byose bifite ingaruka.

05 Ubucucike nyabwo

Uburemere bwibintu bikomeye kuri buri gice cyubunini bwibintu muburyo bwuzuye (ukuyemo icyuho cyimbere).

Kubera ko ubucucike nyabwo bupimirwa muburyo bwagabanijwe, buzaba burenze ubwinshi bwakoreshejwe.Mubisanzwe, ubucucike nyabwo> ubucucike bwuzuye> bwakoreshejwe.

06 Kwishyuza bwa mbere no gusohora ubushobozi bwihariye

Igishushanyo cya anode gifite ubushobozi budasubirwaho mugihe cyambere cyo kwishyuza-gusohora.Mugihe cyambere cyo kwishyuza bateri ya lithium-ion, ubuso bwibikoresho bya anode buhujwe na ioni ya lithium kandi molekile zishonga muri electrolyte zifatanije, kandi hejuru yibikoresho bya anode byangirika bikora SEI.Filime ya Passivation.Gusa nyuma yubuso bubi bwa electrode butwikiriwe neza na firime ya SEI, molekile ya solde ntishobora guhuza, kandi reaction yarahagaritswe.Igisekuru cya firime ya SEI itwara igice cya ioni ya lithium, kandi iki gice cya ion ya lithium ntishobora gukurwa hejuru ya electrode mbi mugihe cyo gusohora, bityo bigatera gutakaza ubushobozi budasubirwaho, bityo bikagabanya ubushobozi bwihariye bwo gusohora bwa mbere.

07 Ubushobozi bwa mbere bwa Coulomb

Ikimenyetso cyingenzi cyo gusuzuma imikorere yibikoresho bya anode nuburyo bwambere bwo kwishyuza-gusohora, bizwi kandi nkibikorwa bya mbere bya Coulomb.Ku nshuro yambere, imikorere ya Coulombic igena neza imikorere yibikoresho bya electrode.

Kubera ko firime ya SEI ikorwa ahanini hejuru yububiko bwa electrode, ubuso bwihariye bwibikoresho bya electrode bigira ingaruka kuburyo butaziguye aho imiterere ya firime ya SEI.Ninini yubuso bwihariye, nini ahantu ho guhurira na electrolyte nini nini yo gukora firime ya SEI.

Muri rusange abantu bemeza ko gushiraho firime ihamye ya SEI ari ingirakamaro mu kwishyuza no gusohora bateri, kandi filime ya SEI idahindagurika ntabwo ibangamira reaction, izahora ikoresha electrolyte, ikabyimbye umubyimba wa firime ya SEI, kandi ongera kurwanya imbere.

08 Imikorere

Imikorere yinzinguzingo ya bateri yerekana umubare wamafaranga yishyurwa nogusohora bateri yiboneye mugihe runaka kandi ikanasohoka mugihe ubushobozi bwa bateri bwagabanutse kugiciro cyagenwe.Kubijyanye n'imikorere ya cycle, firime ya SEI izabuza ikwirakwizwa rya lithium ion kurwego runaka.Mugihe umubare wikizunguruka wiyongera, firime ya SEI izakomeza kugwa, gukuramo, no kubitsa hejuru ya electrode mbi, bikavamo kwiyongera buhoro buhoro imbere imbere ya electrode mbi, izana ubushyuhe Kwiyongera no gutakaza ubushobozi. .

09 Kwaguka

Hariho isano ryiza hagati yo kwaguka nubuzima bwinzira.Nyuma ya electrode mbi imaze kwaguka, ubanza, ingengabihe ihindagurika izahinduka, uduce duto twa electrode mbi tuzakora micro-crack, firime ya SEI izavunika kandi ihindurwe, electrolyte izakoreshwa, kandi imikorere yizunguruka izangirika;kabiri, diaphragm izanyunyuzwa.Umuvuduko, cyane cyane gusohora diaphragm kuruhande rwiburyo bwiburyo bwamatwi yinkingi ya pole, birakomeye cyane, kandi biroroshye gutera imizunguruko mito mito cyangwa imvura ya lithium ya micro-metal hamwe niterambere ryikurikiranabikorwa.

Kubijyanye no kwaguka ubwabyo, lithium ion izashyirwa mumwanya wa grafite intera mugihe cyo guhuza ibishushanyo mbonera, bikavamo kwaguka intera ihuza intera no kwiyongera kwijwi.Iki gice cyo kwaguka ntigisubirwaho.Ingano yo kwaguka ijyanye nurwego rwerekezo rwa electrode itari nziza, urwego rwerekezo = I004 / I110, rushobora kubarwa uhereye kuri XRD.Ibikoresho bya anisotropique bikunda kwaguka mu cyerekezo kimwe (C-axis icyerekezo cya grafite ya kristu) mugihe cya lithium intercalation, bizavamo kwaguka kwinshi kwa bateri.

10Gereranya imikorere

Ikwirakwizwa rya lithium ion mubikoresho bya grafite anode ifite icyerekezo gikomeye, ni ukuvuga, irashobora kwinjizwa gusa perpendicular kumpera yanyuma ya C-axis ya grafite ya kristu.Ibikoresho bya anode hamwe nuduce duto hamwe nubuso bwihariye bwo hejuru bifite igipimo cyiza cyo gukora.Mubyongeyeho, kurwanya electrode hejuru yubutaka (kubera firime ya SEI) hamwe nubushobozi bwa electrode nabyo bigira ingaruka kumikorere.

Kimwe nubuzima bwikizunguruka no kwaguka, isotropic negative electrode ifite imiyoboro myinshi yo gutwara lithium ion, ikemura ibibazo byubwinjiriro buke nigipimo gito cyo gukwirakwizwa muburyo bwa anisotropique.Ibyinshi mu bikoresho bifashisha ikoranabuhanga nka granulation na coating kugirango bongere imikorere yabo.

HCMilling (Guilin Hongcheng) ni uruganda rukora ibikoresho byo gusya.Urukurikirane rwa HLMXibikoresho bya anode super-urusyo rwiza, HCHibikoresho bya anode urusyo rwizanibindi bikoresho byo gusya bya grafite byakozwe natwe byakoreshejwe cyane mugukora ibikoresho bya grafite.Niba ufite ibyo ukeneye, nyamuneka twandikire kugirango ubone ibisobanuro birambuye kubikoresho hanyuma utange amakuru akurikira kuri twe:

Izina ryibikoresho

Ibicuruzwa byiza (mesh / μm)

ubushobozi (t / h)