I-Graphite Anode ne-Cathode Ukuguqulwa Kwamabhethri e-Lithium-Ion

(I-Graphite Anode ne-Cathode Ukuguqulwa Kwamabhethri e-Lithium-Ion)

I-graphite iyimpahla yokuzikhethela kuma-anode amaningi. Ishibhile, inokuphila komjikelezo omude, futhi iyahambisana nekhemikhali yamabhethri e-lithium-ion. Kodwa kunezinkinga ezithile zokuphepha ezihlobene nama-graphite anode, kufaka phakathi i-lithium dendrites ne-plating.

Ukwandisa ukusebenza kahle kwe-coulombic kwe-graphite anode kube yinto ekhathaza kakhulu abacwaningi kule minyaka engamashumi amabili edlule.. Izindlela ezihlukene zokunciphisa ukungahlehliseki komjikelezo wokuqala zenziwe, okuholela ekusebenzeni kahle kwe-coulombic ye 90-96% yezentengiselwano ze-graphite anode.

Enye indlela ethembisayo esikhundleni se-graphite i-silicon. I-silicon ayibizi kakhulu, inamandla amakhulu e-gravimetric kanye ne-gravimetric, futhi ingamunca i-lithium eningi kune-graphite. Nokho, I-silicon inamandla akhethekile angaphakathi kuphela. Ngokwalesi sizathu, kungase kube nzima ukufeza ukuminyana kwamandla aphezulu adingekayo ekusetshenzisweni kwamandla amakhulu.

Isixazululo esingaba khona kule nkinga ukuthuthukisa i-electrolyte interphase eqinile (BE) ku-electrode yegraphite. Lokhu kwenziwa ngokulungisa ingaphezulu le-anode ngendlela evimbela i-Mn2+ encibilikisiwe ukuthi ingangeni ngongqimba lwe-SEI..

Isibonelo salokhu ukusetshenziswa kwe-ethylene carbonate njenge-co-solvent ku-electrolyte ye-LIBs.. Lokhu kuvumela isitebele, i-electrolyte interphase eqinile ku-graphite electrode. Ukwakheka kwale interphase kuvimbela ukubola kwe-electrolyte okuqhubekayo.

Enye indlela engaba khona ukukhulisa amandla okubuyisela emuva we-anode. Kuma-LIB, i-metallic lithium ifakwe phezu kwe-graphite electrode. Lapho lokhu kwenzeka, isabela ne-electrolyte. Ngenkathi le nqubo inciphisa i-Mn2+ encibilikile, futhi ingafaka uMn ku-anode.

(I-Graphite Anode ne-Cathode Ukuguqulwa Kwamabhethri e-Lithium-Ion)