E nwere ọtụtụ ihe ngosi teknụzụ nke ihe anode graphite, ọ na-esikwa ike ịtụle, ọkachasị gụnyere mpaghara elu kpọmkwem, nkesa nha ihe, njupụta ọkpọkọ, njupụta mkpakọ, njupụta ezi, ikike chajị mbụ na mwepụta kpọmkwem, arụmọrụ mbụ, wdg. Na mgbakwunye, enwere ihe ngosi electrochemical dịka arụmọrụ okirikiri, arụmọrụ ọnụego, ọzịza, na ndị ọzọ. Yabụ, kedu ihe ngosi arụmọrụ nke ihe anode graphite? HCMalling (Guilin Hongcheng), onye nrụpụta nke ihe anode ahụ, ewebatala gị ọdịnaya ndị a.ihe anode igwe igwe egweri ihe.

01 mpaghara elu kpọmkwem

Na-ezo aka n'elu ihe dị n'otu n'otu. Ka obere ihe ahụ si dị, otú ahụ ka oke elu ahụ si dị.

Elektrọd na-adịghị mma nke nwere obere ihe na mpaghara elu dị elu nwere ọtụtụ ọwa na ụzọ dị mkpụmkpụ maka mbugharị ion lithium, arụmọrụ ọnụego ya ka mma. Agbanyeghị, n'ihi nnukwu mpaghara kọntaktị na electrolyte, mpaghara maka imepụta ihe nkiri SEI dịkwa oke ibu, arụmọrụ mbụ ga-adịkwa ala. . N'aka nke ọzọ, obere ihe ndị buru ibu nwere uru nke njupụta mkpokọta ka ukwuu.

Oke elu nke ihe ndị e ji graphite anode mee dị ntakịrị karịa 5m2/g.

02 Nkesa nha nke ihe ndị dị ndụ

Mmetụta nke nha ihe graphite anode na arụmọrụ electrochemical ya bụ na nha ihe anode ahụ ga-emetụta njupụta ọkpọkọ nke ihe ahụ na mpaghara elu kpọmkwem nke ihe ahụ.

Nha nke njupụta ọkpọkọ ga-emetụta njupụta ike olu nke ihe ahụ ozugbo, naanị nkesa nha nha kwesịrị ekwesị nke ihe ahụ nwere ike ime ka arụmọrụ nke ihe ahụ ka mma.

03 Njupụta Mgbata

Njupụta ọkpọkọ bụ oke olu kwa otu nke a tụrụ site na mkpọtụ nke na-eme ka ntụ ntụ ahụ pụta ìhè n'ụdị ngwugwu siri ike. Ọ bụ ihe ngosi dị mkpa iji tụọ ihe na-arụ ọrụ. Olu nke batrị lithium-ion pere mpe. Ọ bụrụ na njupụta ọkpọkọ ahụ dị elu, ihe na-arụ ọrụ kwa otu olu nwere oke ibu, ikike olu ahụ dịkwa elu.

04 Njupụta Mkpụkọ

Njupụta nke mkpokọta bụ maka akụkụ osisi, nke na-ezo aka na njupụta mgbe a gbanyere ya mgbe ihe na-arụ ọrụ na elektrọd na-adịghị mma na ihe e ji ejikọta ya ka ọ bụrụ akụkụ osisi, njupụta nke mkpokọta = njupụta mpaghara / (ọkpụrụkpụ nke akụkụ osisi mgbe a gbanyere ya na-ebelata ọkpụrụkpụ nke foil ọla kọpa).

Njupụta nke mkpakọ ahụ nwere njikọ chiri anya na ikike mpempe akwụkwọ kpọmkwem, arụmọrụ, nguzogide dị n'ime na arụmọrụ okirikiri batrị.

Ihe ndị na-emetụta njupụta nke mkpokọta: nha nke ihe ndị dị na ya, nkesa na ọdịdị ha niile nwere mmetụta.

05 Ezigbo Njupụta

Ibu nke ihe siri ike kwa otu olu nke ihe dị n'ọnọdụ dị oke oke (ewezuga oghere dị n'ime).

Ebe ọ bụ na a na-atụ ezigbo njupụta n'ọnọdụ a gbakọtara agbakọta, ọ ga-adị elu karịa njupụta a gbanyere agbakọta. N'ozuzu, ezigbo njupụta > njupụta a gbanyere agbakọta > njupụta a gbanyere agbakọta.

06 Ikike mbụ ịchaji na mwepụta pụrụ iche

Ihe e ji graphite anode mee nwere ikike a na-apụghị ịgbanwe agbanwe na usoro mbụ nke chajị-mwepụ. N'oge usoro chajị mbụ nke batrị lithium-ion, a na-ejikọta elu ihe anode na ion lithium, a na-etinyekwa molekul ihe mgbaze dị na electrolyte n'otu aka, elu ihe anode ahụ na-agbaze wee mepụta SEI. Ihe nkiri Passivation. Naanị mgbe ihe nkiri SEI kpuchiri elu electrode na-adịghị mma kpamkpam, molekul ihe mgbaze enweghị ike ịgbakọta, a kwụsịkwara mmeghachi omume ahụ. Mmepụta nke ihe nkiri SEI na-eri akụkụ nke ion lithium, enweghịkwa ike iwepụta akụkụ a nke ion lithium n'elu electrode na-adịghị mma n'oge usoro mwepụ, si otú a na-akpata mfu ikike a na-apụghị ịgbanwe agbanwe, si otú a na-ebelata ikike kpọmkwem nke mwepụ mbụ.

07 Mmalite arụmọrụ Coulomb

Ihe ngosi dị mkpa maka inyocha arụmọrụ nke ihe anode bụ arụmọrụ mbụ ya nke chajị-mwepụ, nke a makwaara dị ka arụmọrụ Coulomb mbụ. Maka oge mbụ, arụmọrụ Coulombic na-ekpebi ozugbo arụmọrụ nke ihe electrode ahụ.

Ebe ọ bụ na ihe nkiri SEI na-etolitekarị n'elu ihe elektrọd, mpaghara elu kpọmkwem nke ihe elektrọd na-emetụta kpọmkwem mpaghara nhazi nke ihe nkiri SEI. Ka mpaghara elu kpọmkwem buru ibu, otú ahụ ka mpaghara kọntaktị na elektrọd na-ebu ibu ma buru ibu karịa mpaghara maka imepụta ihe nkiri SEI.

A na-ekwere na imepụta ihe nkiri SEI kwụsiri ike bara uru maka ịchaji na iwepụ batrị ahụ, ihe nkiri SEI na-adịghị agbanwe agbanwe adịghịkwa mma maka mmeghachi omume ahụ, nke ga-eri electrolyte mgbe niile, mee ka ọkpụrụkpụ nke ihe nkiri SEI sie ike, ma mee ka iguzogide dị n'ime dịkwuo elu.

08 Arụmọrụ okirikiri

Arụmọrụ okirikiri nke batrị na-ezo aka na ọnụọgụgụ chajị na mwepụ nke batrị na-enweta n'okpuru usoro chajị na mwepụ ụfọdụ mgbe ikike batrị dara na uru akọwapụtara. N'ihe gbasara arụmọrụ okirikiri, ihe nkiri SEI ga-egbochi mgbasa nke ion lithium ruo n'ókè ụfọdụ. Ka ọnụọgụgụ okirikiri na-abawanye, ihe nkiri SEI ga-anọgide na-ada, na-apụ apụ, ma na-etinye n'elu electrode na-adịghị mma, na-ebute mmụba nwayọ nwayọ na nguzogide dị n'ime nke electrode na-adịghị mma, nke na-eweta okpomọkụ Ngụkọta na mfu ikike.

Mgbasawanye 09

E nwere njikọ dị mma n'etiti mgbasawanye na ndụ okirikiri. Mgbe elektrọd na-adịghị mma gbasaa, nke mbụ, isi ihe na-agbagharị agbagharị ga-agbanwe, ihe ndị na-adịghị mma ga-etolite obere mgbawa, ihe nkiri SEI ga-agbaji ma hazie ya ọzọ, a ga-eri elektrọltị ahụ, arụmọrụ okirikiri ahụ ga-emebi; nke abụọ, a ga-apịachi diaphragm. Nrụgide, karịsịa mmịpụta nke diaphragm n'akụkụ aka nri nke ntị ogwe osisi, dị oke njọ, ọ dịkwa mfe ịkpata mmiri ozuzo micro-short ma ọ bụ micro-metal lithium ka usoro chajị-discharge na-aga n'ihu.

Banyere mgbasawanye ahụ n'onwe ya, a ga-etinye ion lithium n'ime oghere dị n'etiti graphite n'oge usoro njikọta graphite, nke ga-eme ka oghere dị n'etiti graphite gbasaa ma mụbaa olu. Akụkụ mgbasawanye a enweghị ike ịgbanwe agbanwe. Ọnụọgụ mgbasawanye ahụ metụtara ogo nhazi nke electrode na-adịghị mma, ogo nhazi = I004/I110, nke enwere ike ịgbakọ site na data XRD. Ihe anisotropic graphite na-emekarị ka mgbasawanye lattice dị n'otu ntụziaka (nduzi C-axis nke kristal graphite) n'oge usoro njikọta lithium, nke ga-eme ka mgbasawanye olu ka ukwuu nke batrị ahụ.

10Nye arụmọrụ ọkwa

Mgbasa nke ion lithium dị na ihe graphite anode nwere ntụziaka siri ike, ya bụ, enwere ike itinye ya naanị n'akụkụ njedebe nke axis C nke kristal graphite. Ihe anode nwere obere ihe na mpaghara elu dị elu nwere arụmọrụ ọnụego ka mma. Na mgbakwunye, iguzogide elu electrode (n'ihi ihe nkiri SEI) na njikwa electrode na-emetụtakwa arụmọrụ ọnụego.

Dịka ndụ okirikiri na mgbasawanye ya si dị, elektrọd na-adịghị mma nke isotropic nwere ọtụtụ ọwa njem lithium ion, nke na-edozi nsogbu nke obere ọnụ ụzọ na obere ọnụego mgbasa ozi na nhazi anisotropic. Ọtụtụ n'ime ihe ndị a na-eji teknụzụ dịka granulation na coating eme ka arụmọrụ ọnụego ha ka mma.

HCMill (Guilin Hongcheng) bụ ụlọ ọrụ na-emepụta igwe ihe eji eme ihe anode.Usoro HLMXihe anode nnukwu-ezigbo igwe ihe ọkụkụ kwụ ọtọ, HCHihe anode igwe ihe dị mma nke ukwuuna igwe igwe graphite ndị ọzọ anyị mepụtara ejirila mee ihe n'ọtụtụ ebe n'imepụta ihe eji eme graphite anode. Ọ bụrụ na ị nwere mkpa ndị yiri ya, biko kpọtụrụ anyị maka nkọwa gbasara akụrụngwa ahụ ma nye anyị ozi ndị a:

Aha ihe eji emepụta ihe

Ịdị mma nke ngwaahịa (mkpụmkpụ/μm)

ikike (t/h)