Pali zizindikiro zambiri luso zipangizo graphite anode, ndipo n'zovuta kuganizira, makamaka kuphatikizapo malo enieni, tinthu kukula kugawa, kachulukidwe wapampopi, compaction kachulukidwe, kachulukidwe weniweni, mlandu woyamba ndi kutulutsa mphamvu yeniyeni, dzuwa loyamba, etc. Komanso, pali zizindikiro electrochemical monga mkombero ntchito, mlingo ntchito, kutupa, ndi zina zotero.Kotero, ndi zizindikiro zotani za graphite anode zipangizo?Zomwe zili pansipa zikudziwitsidwa kwa inu ndi HCMilling(Guilin Hongcheng), wopanga mazinthu za anode mphero.

01 malo enieni

Imatanthawuza kumtunda kwa chinthu pa unit mass.Tinthu tating'onoting'ono, tinthu tating'onoting'ono tating'onoting'ono.

Elekitirodi yoyipa yokhala ndi tinthu tating'ono komanso malo apamwamba kwambiri amakhala ndi njira zambiri komanso njira zazifupi zakusamuka kwa lithiamu ion, ndipo magwiridwe antchito ndiabwinoko.Komabe, chifukwa cha malo akuluakulu okhudzana ndi electrolyte, malo opangira filimu ya SEI ndi yaikulu, ndipo mphamvu yoyamba idzakhalanso yochepa..Komano, tinthu tating'onoting'ono tating'onoting'ono timakhala ndi mwayi wophatikizana kwambiri.

Malo enieni a graphite anode zipangizo makamaka zosakwana 5m2/g.

02 Kugawa kukula kwa tinthu

Chikoka cha tinthu kukula kwa graphite anode zakuthupi pa ntchito yake electrochemical ndi kuti tinthu kukula kwa anode zakuthupi mwachindunji bwanji wapampopi kachulukidwe zinthu ndi enieni padziko m'dera la zakuthupi.

Kukula kwa kachulukidwe wapampopi kudzakhudzanso kuchuluka kwa mphamvu zamagetsi, ndipo kugawa koyenera kwa tinthu tating'onoting'ono kumatha kukulitsa magwiridwe antchito azinthuzo.

03 Tap Density

Kuchulukitsitsa kwapampopi ndi kuchuluka kwa voliyumu iliyonse yoyezedwa ndi kugwedezeka komwe kumapangitsa ufawo kuti uwoneke ngati wopakika wothina.Ndi chizindikiro chofunikira kuyeza zinthu zogwira ntchito.Voliyumu ya batri ya lithiamu-ion ndi yochepa.Ngati kachulukidwe wapampopi ndi wapamwamba, zinthu zogwira ntchito pa voliyumu iliyonse zimakhala ndi misa yayikulu, ndipo kuchuluka kwa voliyumu ndikokwera.

04 Kuchulukana Kwambiri

The compaction kachulukidwe makamaka kwa mtengo wamtengo, womwe umatanthawuza kachulukidwe pambuyo pakugubuduza pambuyo pa ma elekitirodi osagwira ntchito ndipo chomangiracho chimapangidwa pamtengo, kachulukidwe kachulukidwe = kachulukidwe kagawo / (kukhuthala kwa mtengowo mutagubuduza kuchotsera makulidwe a zojambulazo zamkuwa).

Kachulukidwe kakachulukidwe kake kamakhala kogwirizana kwambiri ndi kuchuluka kwa pepala, mphamvu, kukana kwamkati ndi magwiridwe antchito a batire.

Zomwe zimakhudzidwa ndi kachulukidwe kachulukidwe: kukula kwa tinthu, kugawa ndi ma morphology zonse zimakhala ndi zotsatira.

05 Kuchulukana Kwambiri

Kulemera kwa chinthu cholimba pa voliyumu ya chinthu chomwe chili chowundana kwambiri (kupatula ma voids amkati).

Popeza kachulukidwe kowona amayezedwa mophatikizika, kudzakhala kokulirapo kuposa kachulukidwe kojambulidwa.Nthawi zambiri, kachulukidwe kowona> kachulukidwe kakang'ono> kachulukidwe kakang'ono.

06 Kulipira koyamba ndi kutulutsa mphamvu zenizeni

Zinthu za graphite anode zimakhala ndi mphamvu zosasinthika panthawi yoyambira yotulutsa.Pa njira yoyamba kulipiritsa batire lifiyamu-ion, pamwamba pa anode zakuthupi intercalated ndi ayoni lithiamu ndi mamolekyu zosungunulira mu electrolyte ndi co-anaikapo, ndi padziko anode zakuthupi kuwola kupanga SEI.Filimu ya Passivation.Pokhapokha pamene ma elekitirodi oipa pamwamba anali ataphimbidwa kwathunthu ndi SEI filimu, ndi zosungunulira mamolekyu sakanakhoza intercalate, ndipo anachita anasiya.Mbadwo wa SEI filimu amadya mbali ya ayoni lithiamu, ndipo mbali iyi ya ayoni lithiamu sangathe yotengedwa pamwamba pa elekitirodi zoipa pa ndondomeko kumaliseche, motero kuchititsa sizingasinthe mphamvu kutayika, potero kuchepetsa mphamvu yeniyeni ya kumaliseche koyamba.

07 Kuchita Bwino Kwambiri kwa Coulomb

Chizindikiro chofunikira pakuwunika momwe zida za anode zimagwirira ntchito ndikutulutsa kwake koyamba, komwe kumadziwikanso kuti kugwiritsa ntchito bwino kwa Coulomb.Kwa nthawi yoyamba, mphamvu ya Coulombic imatsimikizira momwe ma elekitirodi amagwirira ntchito.

Popeza filimu ya SEI imapangidwa kwambiri pamtunda wa electrode, malo enieni a electrode amakhudza mwachindunji gawo la mapangidwe a filimu ya SEI.Kukula kwapadera kwapadera, komwe kumakhala kolumikizana ndi electrolyte komanso malo opangira filimu ya SEI.

Amakhulupirira kuti kupangidwa kwa filimu yokhazikika ya SEI kumakhala kopindulitsa pakulipiritsa ndi kutulutsa batire, ndipo filimu yosakhazikika ya SEI si yabwino pakuchitapo kanthu, komwe kumawononga ma electrolyte mosalekeza, kukulitsa makulidwe a filimu ya SEI, ndi onjezerani kukana kwamkati.

08 Kuchita mozungulira

Kayendesedwe ka batire kumatanthawuza kuchuluka kwa ndalama zomwe batire imatchaja ndi kutulutsa komwe batire imakumana nayo ikatha ndikuyiyitsidwa kwinakwake mphamvu ya batire ikatsika kufika pamtengo wodziwika.Pankhani ya machitidwe ozungulira, filimu ya SEI idzalepheretsa kufalikira kwa ayoni a lithiamu kumlingo wina.Pamene chiwerengero cha mikombero chikuwonjezeka, filimu ya SEI idzapitirizabe kugwa, kupukuta, ndi kuyika pamwamba pa electrode yolakwika, zomwe zimapangitsa kuti pang'onopang'ono kuwonjezeka kwa mkati mwa kukana kwa electrode yolakwika, zomwe zimabweretsa kutentha Kuchuluka ndi kutaya mphamvu. .

09 Kuwonjezera

Pali mgwirizano wabwino pakati pa kukula ndi moyo wozungulira.Pambuyo pa electrode yoipa ikukula, choyamba, chigawo chozungulira chidzawonongeka, tinthu tating'onoting'ono ta electrode tidzapanga ming'alu yaying'ono, filimu ya SEI idzasweka ndikukonzedwanso, electrolyte idzadyedwa, ndipo ntchito yozungulira idzawonongeka;chachiwiri, diaphragm idzafinyidwa.Kupanikizika, makamaka extrusion ya diaphragm pamphepete kumanja kwa khutu la pole, ndizovuta kwambiri, ndipo n'zosavuta kuyambitsa micro-short circuit kapena micro-metal lithiamu precipitation ndi kupita patsogolo kwa kayendedwe ka kutulutsa.

Ponena za kukulitsa komweko, ma ion a lithiamu adzaphatikizidwa mumayendedwe a graphite interlayer panthawi ya graphite intercalation process, zomwe zimapangitsa kukula kwa matayala apakati komanso kuwonjezeka kwa voliyumu.Gawo lokulitsali silingasinthe.Kuchuluka kwa kuwonjezereka kumagwirizana ndi mlingo wa kayendedwe ka electrode yolakwika, mlingo wa orientation = I004 / I110, womwe ukhoza kuwerengedwa kuchokera ku deta ya XRD.The anisotropic graphite zakuthupi amakonda kukumana kukulitsa latisi mbali yomweyo (ndi C-olamulira malangizo a graphite galasi) pa lifiyamu intercalation ndondomeko, zomwe zidzachititsa lalikulu voliyumu kukula kwa batire.

10Mulingo wantchito

The kufalikira kwa ayoni lifiyamu mu graphite anode zakuthupi ali amphamvu directionality, ndiye kuti, akhoza anaikapo perpendicular kumapeto kwa nkhope ya C-olamulira wa kristalo graphite.Zida za anode zokhala ndi tinthu tating'ono komanso malo apamwamba kwambiri zimakhala ndi magwiridwe antchito abwino.Komanso, electrode pamwamba kukana (chifukwa cha SEI filimu) ndi ma elekitirodi conductivity amakhudzanso mlingo ntchito.

Mofanana ndi moyo wozungulira ndi kufalikira, electrode ya isotropic negative ili ndi njira zambiri zoyendera za lithiamu ion, zomwe zimathetsa mavuto olowera pang'ono komanso kutsika kwapakati pamtundu wa anisotropic.Zambiri mwazinthu zimagwiritsa ntchito matekinoloje monga granulation ndi zokutira kuti ziwongolere magwiridwe antchito awo.

HCMilling(Guilin Hongcheng) ndi wopanga anode zipangizo akupera mphero.Zithunzi za HLMXzinthu za anode wapamwamba- mphero yabwino yowongoka, HCHzinthu za anode mphero yabwino kwambirindi zina graphite akupera mphero opangidwa ndi ife akhala ankagwiritsa ntchito kupanga graphite anode zipangizo.Ngati muli ndi zosowa zina, chonde titumizireni kuti mumve zambiri za zidazo ndikupereka zambiri kwa ife:

Dzina lakuthupi

Ubwino wazinthu (ma mesh/μm)

mphamvu (t/h)