Hari ibimenyetso byinshi bya tekiniki by'ibikoresho bya anode ya grafiti, kandi biragoye kubyitaho, cyane cyane harimo ubuso bwihariye, ingano y'uduce duto, ubucucike bw'amazi, ubucucike nyakuri, imbaraga zihariye zo gusohora no gusohora, ubushobozi bwa mbere bwo gukora neza, nibindi. Byongeye kandi, hari ibimenyetso bya elegitoroniki nk'imikorere y'uruziga, imikorere y'umuvuduko, kubyimba, nibindi. None se, ni ibihe bimenyetso by'imikorere y'ibikoresho bya anode ya grafiti? Ibi bikurikira byatanzwe na HCMilling (Guilin Hongcheng), uruganda rwakoze ibyo bikoresho.ibikoresho bya anode uruganda rusya.

01 ubuso bwihariye

Bivuga ubuso bw'ikintu kuri buri gice cy'uburemere. Uko agace gato kaba gato, niko ubuso bwihariye burushaho kuba bunini.

Electrode ya negatif ifite uduce duto n'ubuso bwihariye ifite imiyoboro myinshi n'inzira ngufi zo kwimuka kwa iyoni ya lithiamu, kandi imikorere y'umuvuduko iba myiza kurushaho. Ariko, bitewe n'aho electrolyte ihurira na electrolyte nini, agace ko gukora filime ya SEI nako ni kanini, kandi imikorere ya mbere nayo izagabanuka. Ku rundi ruhande, uduce tunini dufite inyungu yo kuba twinshi cyane.

Ubuso bwihariye bw'ibikoresho bya grafiti anode byaba byiza buri munsi ya 5m2/g.

02 Ingano y'uduce duto

Ingaruka z'ingano y'uduce tw'ibikoresho bya grafiti anode ku mikorere yabyo ya electrochemical ni uko ingano y'uduce tw'ibikoresho bya anode igira ingaruka zitaziguye ku bucucike bw'ibikoresho ndetse n'ubuso bwihariye bw'ibikoresho.

Ingano y'ubucucike bw'amazi ku muyoboro w'amazi izagira ingaruka zitaziguye ku bucucike bw'ingufu z'ibikoresho, kandi ingano ikwiye y'uduce tw'ibikoresho ni yo yonyine ishobora gutuma ibikoresho birushaho gukora neza.

03 Ubucucike bw'agakoresho

Ubucucike bw'amatafari ni uburemere kuri buri gice bupimirwa n'ingufu zituma ifu igaragara mu buryo bwo gupakira buto. Ni ikimenyetso cy'ingenzi cyo gupima ibikoresho bikora. Ubunini bwa bateri ya lithiamu-iyoni ni buke. Iyo ubucucike bw'amatafari buri hejuru, ibikoresho bikora kuri buri gice bifite uburemere bwinshi, kandi ubushobozi bw'ingano ni bwinshi.

04 Ubucucike bw'ingufu

Ubucucike bw'inkingi bugenewe ahanini igice cy'inkingi, bivuga ubucucike nyuma yo kuzingurura nyuma y'uko ibikoresho bikora bya electrode mbi kandi agakoresho ko gufata kagakorwamo igice cy'inkingi, ubucucike bw'inkingi = ubucucike bw'ahantu / (ubunini bw'igice cy'inkingi nyuma yo kuzingurura hakuwemo ubunini bw'icyuma cy'umuringa).

Ubucucike bw'ingufu bufitanye isano rya hafi n'ubushobozi bw'urupapuro, imikorere myiza, ubushobozi bwo guhangana n'ingufu imbere ndetse n'imikorere y'uruhererekane rw'ingufu.

Ibintu bigira ingaruka ku bucucike bw'uduce: ingano y'uduce, uko dukwirakwira n'imiterere yatwo byose bigira ingaruka.

05 Ubucucike nyakuri

Uburemere bw'ibintu bikomeye kuri buri gipimo cy'ingano y'ikintu kiri mu buryo bucucitse cyane (hatarimo imyanda y'imbere).

Kubera ko ubucucike nyakuri bupimirwa mu buryo bufatanye, buzaba buri hejuru y’ubucucike bwafashwe. Muri rusange, ubucucike nyakuri > ubucucike bufatanye > ubucucike bwafashwe.

06 Ingufu za mbere zo gushyushya no gusohora ibikoresho byihariye

Ibikoresho bya anode ya grafiti bifite ubushobozi budasubirwaho mu gihe cyo gutangira gusohora charge-recharge. Mu gihe cyo gutangira gusohora charge ya bateri ya lithium-ion, ubuso bw'ibikoresho bya anode buhuzwa na iyoni za lithium maze molekile za solvent muri electrolyte zigashyirwa hamwe, hanyuma ubuso bw'ibikoresho bya anode bugahinduka SEI. Filimi yo gusohora electrode. Nyuma y'uko ubuso bwa electrode ya negatif butwikiriwe burundu na filimi ya SEI, molekile za solvent ntizashoboraga guhuzwa, maze reaction irahagarara. Gukora filimi ya SEI bikoresha igice cya iyoni za lithium, kandi iki gice cya iyoni za lithium ntigishobora gukurwa ku buso bwa electrode ya negatif mu gihe cyo gusohora electrode, bityo bigatera igihombo kidasubirwaho, bityo bigagabanya ubushobozi bwihariye bwo gusohora electrode ya mbere.

07 Uburyo bwa mbere bwo gukora neza muri Coulomb

Igipimo cy'ingenzi cyo gusuzuma imikorere y'ibikoresho bya anode ni imikorere yabyo ya mbere yo gusohora umuriro, izwi kandi nka imikorere ya mbere ya Coulomb. Ku nshuro ya mbere, imikorere ya Coulombic igena mu buryo butaziguye imikorere y'ibikoresho bya electrode.

Kubera ko filime ya SEI ikunze kuba ku buso bw'ibikoresho bya electrode, ubuso bwihariye bw'ibikoresho bya electrode bugira ingaruka zitaziguye ku gace k'ikorwa rya filime ya SEI. Uko ubuso bwihariye bunini, ni ko agace gahura na electrolyte kaba kanini kandi ni ko agace ko gukora filime ya SEI kaba kanini.

Muri rusange abantu bemera ko gukora firime ya SEI ihamye ari ingirakamaro mu gusharija no gusohora bateri, kandi firime ya SEI idatekanye ntigira akamaro kuri iyo reaction, izahora ikoresha electrolyte, ikongera ubunini bwa firime ya SEI, kandi ikongera ubushobozi bwo guhangana imbere.

08 Imikorere y'ingendo

Imikorere ya bateri yerekeye umubare w'ingufu n'isohoka rya bateri munsi y'uburyo runaka bwo gushyushya no gusohora iyo ubushobozi bwa bateri bugabanutse ku giciro runaka. Ku bijyanye n'imikorere ya bateri, firime ya SEI izabangamira ikwirakwira rya iyoni za lithiyumu ku rugero runaka. Uko umubare w'ingufu wiyongera, firime ya SEI izakomeza kugwa, gushwanyuka, no kwishyira hejuru y'ingufu za negatif, bigatuma habaho kwiyongera buhoro buhoro k'ubudahangarwa bw'imbere bwa electrode negatif, bigatera ubushyuhe Kwiyongera no gutakaza ubushobozi.

09 Kwaguka

Hari isano nziza hagati yo kwaguka n'ubuzima bw'uruziga. Nyuma yuko electrode mbi imaze kwaguka, icya mbere, igice cy'imbere cy'uruziga kizahinduka, uduce twa electrode mbi tuzahinduka imiyoboro mito, firime ya SEI izavunika kandi ivugururwe, electrolyte izakoreshwa, kandi imikorere y'uruziga izagabanuka; icya kabiri, diyafroni izakandamizwa. Igitutu, cyane cyane gusohoka kwa diafroni ku mfuruka y'iburyo y'ugutwi kw'inkingi, ni gikomeye cyane, kandi biroroshye gutera imvura ya micro-short circuit cyangwa micro-metal lithium hamwe n'iterambere ry'uruziga rwo gusohora umuriro.

Ku bijyanye no kwaguka ubwabyo, iyoni za lithiamu zizashyirwa mu mwanya wa graphite interlayer mu gihe cyo guteranya graphite, bigatuma habaho kwaguka kw'interlayer interlayer no kwiyongera k'ubwinshi. Iki gice cyo kwaguka ntigishobora gusubizwa inyuma. Ingano yo kwaguka ifitanye isano n'urwego rw'icyerekezo cya electrode negative, urugero rw'icyerekezo = I004/I110, rushobora kubarwa uhereye ku makuru ya XRD. Ibikoresho bya graphite ya anisotropic bikunda kwaguka mu cyerekezo kimwe (icyerekezo cya C-axis cya crystal ya graphite) mu gihe cyo guteranya graphite ya lithiamu, bizatuma bateri yongera ubwinshi bw'ubwinshi.

10Tanga amanota ku mikorere

Gukwirakwira kwa iyoni za lithiamu mu bikoresho bya anode ya grafiti bifite icyerekezo gikomeye, ni ukuvuga ko bishobora gushyirwa gusa ku ruhande rw'inyuma rw'umurongo wa C wa kristale ya grafiti. Ibikoresho bya anode bifite uduce duto n'ubuso bwihariye bifite imikorere myiza. Byongeye kandi, ubushobozi bwo kurwanya ubuso bwa electrode (kubera filimi ya SEI) hamwe n'uburyo electrode ikora nabyo bigira ingaruka ku mikorere y'umuvuduko.

Kimwe n'igihe cy'uruziga n'ikwirakwira ryarwo, electrode ya isotropic negative ifite imiyoboro myinshi ya lithium ion transportation, ikemura ibibazo byo kwinjira bike n'umuvuduko muke w'ikwirakwira ry'amashanyarazi mu miterere ya anisotropic. Ibikoresho byinshi bikoresha ikoranabuhanga nka granulation na coating kugira ngo binoze imikorere yabyo.

HCMilling (Guilin Hongcheng) ni uruganda rukora uruganda rusya ibikoresho bya anode.Urukurikirane rwa HLMXibikoresho bya anode byiza cyane-urusyo rwiza ruhagaze, HCHibikoresho bya anode urusyo rwiza cyanen'izindi nganda zisya grafiti zakozwe natwe zakoreshejwe cyane mu gukora ibikoresho bya grafiti anode. Niba ufite ibyo ukeneye bifitanye isano, twandikire kugira ngo ubone ibisobanuro birambuye ku bikoresho kandi uduhe amakuru akurikira:

Izina ry'ibikoresho fatizo

Ubunini bw'ibicuruzwa (mesh / μm)

ubushobozi (t/h)