E nwere ọtụtụ teknụzụ egosi nke graphite anode ihe, na o siri ike iburu n'uche, tumadi gụnyere kpọmkwem elu ebe, urughuru size nkesa, mgbata njupụta, compaction njupụta, ezi njupụta, mbụ ụgwọ na ihapu kpọmkwem ikike, mbụ arụmọrụ, wdg. Na mgbakwunye, enwere ihe ngosi electrochemical dị ka arụmọrụ okirikiri, arụmọrụ ọnụego, ọzịza, na ihe ndị ọzọ.Yabụ, kedu ihe ngosipụta arụmọrụ nke ihe graphite anode?Ọ bụ HCMilling(Guilin Hongcheng), onye na-emepụta ihe na-ewebata gị ọdịnaya ndị aihe anode igwe ihe igwe.

01 kpọmkwem n'elu ebe

Na-ezo aka n'akụkụ elu nke ihe n'otu akụkụ.Obere urughuru, ka ibu ahụ kpọmkwem n'elu ebe.

Eletrọd na-adịghị mma na obere ihe dị elu na mpaghara elu dị elu nwere ọtụtụ ọwa na ụzọ dị mkpụmkpụ maka ịkwaga lithium ion, na arụmọrụ ọnụego dị mma.Otú ọ dị, n'ihi nnukwu kọntaktị na electrolyte, ebe a na-emepụta ihe nkiri SEI dịkwa ukwuu, ọrụ mbụ ga-adịkwa ala..Ihe ndị buru ibu, n'aka nke ọzọ, nwere uru nke njupụta njupụta dị ukwuu.

Ebe a kapịrị ọnụ nke ihe graphite anode dị mma karịa 5m2 / g.

02 Nkesa nha urughuru

Mmetụta nke urughuru size nke graphite anode ihe na ya electrochemical arụmọrụ bụ na urughuru size nke anode ihe ga- kpọmkwem emetụta mgbata njupụta nke ihe na kpọmkwem elu ebe nke ihe onwunwe.

The size nke mgbata njupụta ga ozugbo emetụta olu ike njupụta nke ihe onwunwe, na naanị urughuru size nkesa nke ihe nwere ike jirichaa arụmọrụ nke ihe onwunwe.

03 Pịa njupụta

Njupụta mgbata bụ uka kwa otu olu a tụrụ site na ịma jijiji na-eme ka ntụ ntụ pụta n'ụdị mkpọkọ siri ike.Ọ bụ ihe ngosi dị mkpa iji tụọ ihe na-arụ ọrụ.Oke batrị lithium-ion nwere oke.Ọ bụrụ na njupụta mgbata dị elu, ihe na-arụ ọrụ na-arụ ọrụ kwa otu olu nwere nnukwu ọnụ ọgụgụ, na ike olu dị elu.

04 Compaction Njupụta

The compaction njupụta bụ tumadi maka okporo osisi ibe, nke na-ezo aka njupụta mgbe tụgharịa mgbe na-adịghị mma electrode nọ n'ọrụ ihe na ihe nkedo na-mere n'ime okporo osisi ibe, compaction njupụta = ebe njupụta / (ọkpụrụkpụ nke okporo osisi ibe mgbe tụgharịa mwepu na. ọkpụrụkpụ nke foil ọla kọpa).

The compaction njupụta nwere njikọ chiri anya na mpempe akwụkwọ kpọmkwem ikike, arụmọrụ, n'ime ime na arụmọrụ okirikiri batrị.

Ihe na-emetụta mmetụta nke njupụta compaction: nha nha, nkesa na morphology niile nwere mmetụta.

05 Ezi njupụta

Ibu nke ihe siri ike n'otu nha nke ihe n'ụdị dị oke oke (ewezuga oghere dị n'ime).

Ebe ọ bụ na a na-atụ ihe njupụta n'ezie na steeti gbakọrọ ọnụ, ọ ga-adị elu karịa njupụta apịaji.N'ozuzu, ezi njupụta> compacted density> tapped density.

06 Ego mbu na mbupu ikike akọwapụtara

Ihe graphite anode nwere ikike a na-apụghị ịgbagha agbagha na okirikiri ịgbasa ụgwọ mbụ.N'oge usoro nchaji mbụ nke batrị lithium-ion, elu nke ihe anode na-ejikọta ya na ion lithium na ihe ndị na-agbaze na electrolyte na-ejikọta ya, na elu nke ihe anode na-emebi ka ọ bụrụ SEI.Ihe nkiri ngafe.Naanị mgbe ihe nkiri SEI kpuchiri elu electrode na-adịghị mma, ụmụ irighiri ihe ndị na-agbaze enweghị ike ịgbakọ ọnụ, a kwụsịrị mmeghachi omume ahụ.Ọgbọ nke ihe nkiri SEI na-eri akụkụ nke ions lithium, na akụkụ a nke lithium ion enweghị ike ịpụta site na elu nke electrode na-adịghị mma n'oge usoro nkwụsị, si otú a na-akpata nkwụsị ikike na-enweghị ike ịgbanwe, si otú ahụ na-ebelata ikike kpọmkwem nke nkwụsị mbụ.

07 mbụ Coulomb arụmọrụ

Ihe ngosi dị mkpa maka ịtụle arụmọrụ nke ihe anode bụ nrụpụta ụgwọ mbụ ya, nke a makwaara dị ka arụmọrụ Coulomb mbụ.Maka oge mbụ, arụmọrụ Coulombic na-ekpebi kpọmkwem arụmọrụ nke ihe electrode.

Ebe ọ bụ na ihe nkiri SEI na-emekarị n'elu ihe nke electrode, ebe a kapịrị ọnụ nke ihe electrode na-emetụta kpọmkwem ebe e guzobere ihe nkiri SEI.Ebe dị elu nke dị n'elu, ka ebe kọntaktị na electrolyte na-ebuwanye ibu ma buru ibu maka ịmepụta ihe nkiri SEI.

A na-ekwenyekarị na ịmepụta ihe nkiri SEI kwụsiri ike na-aba uru na ịchaji na ịchaji batrị, na ihe nkiri SEI na-adịghị mma adịghị mma maka mmeghachi omume ahụ, nke ga-anọgide na-eri electrolyte, na-eme ka ọkpụrụkpụ nke ihe nkiri SEI, na mụbaa nguzogide n'ime.

08 arụmọrụ okirikiri

Ịrụ ọrụ okirikiri batrị na-ezo aka na ọnụọgụ ụgwọ na mwepu nke batrị na-enweta n'okpuru ụfọdụ ụgwọ na usoro mwepụ mgbe ike batrị dara na uru akọwapụtara.N'ihe gbasara arụmọrụ okirikiri, ihe nkiri SEI ga-egbochi mgbasa nke ion lithium ruo n'ókè ụfọdụ.Ka ọnụ ọgụgụ nke cycles na-abawanye, ihe nkiri SEI ga-anọgide na-adapụ, wepụ ya, na nkwụnye ego n'elu electrode na-adịghị mma, na-eme ka mmụba nke nwayọọ nwayọọ na-eguzogide n'ime ime nke electrode na-adịghị mma, nke na-eweta nchịkọta okpomọkụ na nkwụsị ikike. .

09 Mgbasawanye

Enwere mmekọrịta dị mma n'etiti mgbasawanye na ndụ okirikiri.Mgbe electrode na-adịghị mma gbasaa, nke mbụ, a ga-emezigharị isi ikuku, ihe ndị na-adịghị mma electrode ga-emepụta micro-cracks, ihe nkiri SEI ga-agbaji na nhazigharị, electrolyte ga-eri, na arụmọrụ okirikiri ga-emebi;nke abụọ, a ga-apịpịa diaphragm.Nrụgide, karịsịa extrusion nke diaphragm n'akụkụ aka nri nke ntị pole, dị nnọọ njọ, ọ dịkwa mfe ime ka micro-short sekit ma ọ bụ micro-metal lithium mmiri ozuzo na ọganihu nke ụgwọ-nkwụsị okirikiri.

N'ihe gbasara mgbasawanye n'onwe ya, a ga-etinye ion lithium n'ime oghere graphite interlayer n'oge usoro nhazi graphite, na-eme ka mgbasawanye nke oghere interlayer na mmụba nke olu.Akụkụ mgbasawanye a enweghị ike ịtụgharị.Ọnụ ọgụgụ nke mgbasawanye metụtara ogo nhazi nke electrode na-adịghị mma, ogo nke nhazi = I004 / I110, nke nwere ike gbakọọ site na data XRD.Ihe graphite anisotropic na-eme ka ọ bụrụ mgbasawanye lattice n'otu ntụziaka ahụ (ntụziaka C-axis nke kristal graphite) n'oge usoro ntinye nke lithium, nke ga-eme ka mmụba dị ukwuu nke batrị.

10Ọnụ arụmọrụ

Mgbasa nke ion lithium na graphite anode ihe nwere ntụzịaka siri ike, ya bụ, enwere ike itinye ya naanị na njedebe nke ihu C-axis nke kristal graphite.Ihe anode nwere obere ihe na mpaghara elu dị elu nwere arụmọrụ ọnụego ka mma.Tụkwasị na nke ahụ, nkwụsị elu nke electrode (n'ihi ihe nkiri SEI) na electrode conductivity na-emetụtakwa arụmọrụ ọnụego.

N'otu aka ahụ dị ka ndụ okirikiri na mgbasawanye, electrode na-adịghị mma nke isotropic nwere ọtụtụ ọwa ụgbọ njem lithium ion, nke na-edozi nsogbu nke ọnụ ụzọ dị nta na ọnụego mgbasa ozi dị ala na nhazi anisotropic.Ọtụtụ n'ime ihe ndị a na-eji teknụzụ dị ka granulation na mkpuchi iji melite arụmọrụ ọnụego ha.

HCMilling (Guilin Hongcheng) bụ emeputa nke anode ihe igwe ihe igwe nri.Usoro HLMXihe anode ibu-ezigbo igwe nri kwụ ọtọ, HCHihe anode ultra-mma igwe igwena igwe igwe ihe igwe graphite ndị ọzọ anyị na-emepụta ka ejirila ọtụtụ ebe na-emepụta ihe graphite anode.Ọ bụrụ na ị nwere mkpa metụtara, biko kpọtụrụ anyị maka nkọwa nke akụrụngwa ma nye anyị ozi ndị a:

Aha akụrụngwa

Mma ngwaahịa (ntupu/μm)

ikike (t/h)