Ndezvipi zvinhu zvinofanirwa kugadziriswa uye kugadziriswa pakushanda kwe graphitized petroleum coke?

Kuti ikwanise kuzadzisa zvinodiwa nemabhatiri e lithium-ion echizvarwa chinotevera anoshanda zvakanyanya, graphitized petroleum coke inoda kuvandudzwa mukushanda kwerating, kugadzikana kwecycle, kushanda kwetembiricha yakaderera, simba rechimiro, kushanda kwekutanga, uye kushanda zvakanaka kwemari maererano nemaitiro ekugadzira. Ongororo chaiyo ndeiyi inotevera:

I. Kuvandudza Kushanda Kwemuyero uye Kugadzikana Kwekutenderera Kwemabhiriji

Dambudziko: Munguva yekuchaja nekuburitsa, kuiswa nekuburitswa kwemaion e-lithium mu graphitized petroleum coke kunogona kukonzera kuwedzera nekudzika kwezvikamu zve graphite. Nekufamba kwenguva refu, izvi zvinogona kukonzera kukuvara kwechimiro, zvichikanganisa kugadzikana kwe cycle. Nzira dzekuvandudza:

• Kugadziriswazve kweMagadzirirwo eParticle: Sarudza magadzirirwo akakodzera eneedle coke uye shandisa zvinhu zviri nyore kushandisa graphitizable zvakaita sepitch senzvimbo dzecarbon dzekubatanidza. Nekuisa zvinhu izvi muchoto chinotenderera, zvidimbu zvakawanda zveneedle coke zvinogona kubatanidzwa pamwe chete kuti zvigadzire zvidimbu zvechipiri zvine saizi dzakakodzera dzeparticle, zvichiteverwa negraphitization. Nzira iyi inoderedza zvinobudirira crystallite orientation index (OI value) yezvinhu uye inowedzera nzira yekupararira kwema lithium ions, nokudaro ichivandudza mashandiro erate.
• Kugadziriswa kweKuputira Pamusoro: Coke yepetroleum yakaputirwa negirafu ine zvinhu zvakaita seamorphous carbon, metal oxides, kana mapolymers kuti vagadzire zvidimbu zvakaumbwa ne "core-shell". Chidimbu chekuputira chinogona kuparadzanisa kusangana kwakananga ne electrolyte, kuderedza nzvimbo dzinoshanda pamusoro, kuderedza nzvimbo chaiyo yepamusoro, uye panguva imwe chete kuwedzera kugona kwekuisa uye kupararira kwe lithium ions, nokudaro zvichivandudza kugadzikana kwe cycle.

II. Kuvandudza Kushanda Kwemhepo Pakupisa Kushoma

Dambudziko: Munzvimbo dzine tembiricha yakaderera, mwero wekupararira kwemaion e-lithium mu graphitized petroleum coke unoderera, zvichikonzera kudzikira kwekushanda kwebhatiri. Nzira dzekuvandudza:

• Kuisa doping neSoft Carbon: Kuisa chikamu chakati che soft carbon mu graphite anode kunogona kuvandudza mashandiro ebhatiri ekuchaja tembiricha yakaderera. Soft carbon ine chimiro chisina chimiro chine nzvimbo yakakura pakati pezvikamu uye inoenderana zvakanaka ne electrolyte, zvichikonzera mashandiro akanaka ekupisa kwakaderera. Zvisinei, chiyero che doping chinofanira kudzorwa nokungwarira kuti chienzanise mashandiro ekupisa kwakaderera uye hupenyu hwese hwenguva.
• Kugadzirisa Kuumbwa kweElectrolyte: Gadzirisa kugadzirwa kweelectrolyte nekuwedzera zvinhu zvitsva kana kushandura kuumbwa kwe solvent kuti uderedze viscosity ye electrolyte patembiricha yakaderera uye kuwedzera mwero wekupararira kwe lithium ions.

III. Kuvandudza Simba reChivako uye Kugadzikana

Dambudziko: Zvinhu zvekabhoni zvine grafiti yakawanda, kunyangwe zvine simba rakawanda uye mapuratifomu akagadzikana ekuburitsa chaji, zvinogona kuratidza kushanda kwakashata kweseji uye kushanda kwakaderera pakupisa. Nzira dzekuvandudza:

• Dhigirii reKudzora Graphitization: Munguva yekushanda kwegraphitization, mwero wegraphitization unofanirwa kudzorwa kuti uchengetedze mamwe maumbirwo asina chimiro pakati pema microcrystals, nokudaro uchichengetedza imwe nhanho yesimba remaumbirwo.
• Kuzivisa Zvimiro Zvidiki: Nekuvaka zvimiro zvidiki kana zvimiro zvine maburi, huwandu hwenzira dzekuisa nekubvisa maion e lithium hunogona kuwedzerwa, zvichiwedzera kugadzikana kwechimiro chezvinhu.

IV. Kuvandudza Kushanda Kwepakutanga uye Kuderedza Mari

Dambudziko: Sechinhu chinogadzirwa neanode, graphitized petroleum coke inogona kuratidza kushanda kwakaderera kwekutanga uye mitengo yakakwira yekugadzira. Nzira dzekuvandudza:

• Kurapa Kuomeswa Kwemvura Pamusoro: Isa mushonga we petroleum coke wakaiswa graphitized ne solution yakasimba ye oxidizing agent kuti ioxide uye passive surface active potentials uye kuderedza mapoka anoshanda, nokudaro zvichivandudza kushanda kwekutanga.
• Kugadzirisa Maitiro Ekugadzira: Kuvandudza maitiro ekugadzira akadai se calcination uye graphitization kuderedza mari yekugadzira uye kuwedzera kushanda zvakanaka kwekugadzira.