Eminyakeni yamuva nje, imibiko yomlilo ngisho nokuqhuma okubangelwa amabhethri e-lithium-ion kuvamile.Amabhethri e-Lithium-ion ikakhulukazi akhiwe ngezinto ezingezinhle ze-electrode, i-electrolyte kanye nezinto ezisebenza kahle ze-electrode. Umsebenzi wamakhemikhali we-graphite ye-electrode engalungile esimweni esikhokhisiwe ufana ne-lithium yensimbi. Ifilimu ye-SEI engaphezulu ingabola ekushiseni okuphezulu, futhi ama-ion e-lithium ashumekwe ku-graphite azosabela nge-electrolyte kanye ne-binder polyvinylidene fluoride futhi ekugcineni azokhipha ukushisa okuningi.

Izixazululo ze-Alkyl carbonate eziphilayo zivame ukusetshenziswa njengama-electrolyte, avutha umlilo. Impahla ye-electrode enhle imvamisa i-transition metal oxide, enezindawo eziqinile ze-oxidizing esimweni esikhokhisiwe, futhi ibola kalula ukuze ikhulule umoya-mpilo ekushiseni okuphezulu. I-oxygen ekhishiwe isabela ne-electrolyte ukuze i-oxidize, bese iphuma ukushisa okuningi.

Ngokufanelekile, ibhethri ye-lithium ion ibingeke izinze uma ishisisa ngezinga lokushisa eliphezulu. Nokho, yini ngempela engenzeka uma siqhubeka sishisisa ibhethri? Lapha senze ukuhlola kwangempela kuseli ye-NCM egcwele amandla kagesi engu-3.7 V kanye nomthamo ongu-106 Ah.

Izindlela Zokuhlola:

1. Emazingeni okushisa asekamelweni (25±2℃), ingqamuzana elilodwa likhishwa kuqala ku-voltage yomkhawulo ophansi nge-current ye-1C futhi ishiywe imizuzu engu-15. Bese usebenzisa i-1C engaguquki yamanje ukuze ushaje ku-voltage yomkhawulo ophezulu futhi ushintshele ekushajweni kwe-voltage engashintshi, yeka ukushaja lapho ukushaja kwamanje kwehla ku-0.05C, futhi ukubeke eceleni imizuzu engu-15 ngemva kokushaja;

2. Khulisa izinga lokushisa kusuka ekamelweni kuya ku-200 ° C ku-5 ° C/min, futhi ugcine ku-5 ° C ilitha ngayinye imizuzu engu-30;

Isiphetho:

Amaseli e-lithium azogcina evutha lapho izinga lokushisa lokuhlola likhuphuka ngokuqhubekayo. Kusukela kule nqubo engenhla siqala ukubona i-valve yokukhipha ivuliwe ivuliwe, uketshezi lukhishwe; njengoba izinga lokushisa likhuphuka ngokuqhubekayo, ukukhishwa kwesibili koketshezi kwenzeka futhi kwaqala ukuvutha. Amaseli ebhethri ahlulekile cishe ku-138°C, osekuvele ephakeme kunezinga lokushisa elivamile lokuhlola elingu-130°C.