Umthelela Wokushaja Ngokushesha Ku-Lithium Ibhethri Positive Electrode

Ukusetshenziswa kweamabhethri e-lithium-ionizithuthukise kakhulu izindlela zokuphila zabantu.Kodwa-ke, ngokuthuthuka okusheshayo komphakathi wesimanje, abantu bafuna isivinini sokushaja esiphezulu nesiphezulu, ngakho ucwaningo lokushajwa okusheshayo kwamabhethri e-lithium-ion lubaluleke kakhulu.Lokhu high-energy-densityibhethri ye-lithium-ionubuchwepheshe bokushaja ngokushesha buzoba namathemba abanzi okusebenza kumishini kagesi ephathwayo, amathuluzi kagesi anamandla amakhulu, kanye nezimoto zikagesi.Kodwa-ke, ucwaningo lwamanje lokushaja okusheshayo luvinjwe izithiyo eziningi, njengokuvela kwe-lithium ohlangothini lwe-electrode engalungile.Ukuze uthuthukise ukusebenza kokushaja okusheshayo kwamabhethri e-lithium-ion, kufanele siqonde ngokugcwele izinguquko ezintweni ze-electrode ngesikhathi sezinqubo ezinhle nezingezinhle.

Muva nje, uDkt. Tanvir R. Tanim wase-United States ushicilele amaphepha ocwaningo ahlobene.Lesi sihloko sihlanganisa ukuhlaziywa kwe-electrochemical, amamodeli okuhluleka kanye nezimpawu ngemuva kokuhlolwa ukuze kufundwe imiphumela yokushaja okusheshayo (i-XFC) ezintweni ze-cathode ezikalini eziningi.Amasampuli okuhlola afaka i-41 G/NMCamabhethri esikhwama.Izinga lokushaja okusheshayo (1-9 C) futhi ujikelezise izikhathi ezifika ku-1000 esimweni sokuphatha.Kutholakale ukuthi phakathi nomjikelezo wokuqala, inkinga ye-electrode enhle yayincane kakhulu, kodwa ekupheleni kokuphila kwebhethri, i-electrode enhle yabonakala imifantu esobala futhi ihambisana nomshini wokukhathala, ukwehluleka okuhle kwe-electrode kwaqala ukusheshisa.Phakathi nomjikelezo, isakhiwo esiyinhloko se-electrode enhle sihlala siqinile, kodwa kungabonwa ukuthi izinhlayiya ezingaphezulu zihlelwa kabusha ngokuphawulekayo.

Ngokuhlaziya, kungatholakala ukuthi ngisho nasezingeni eliphansi kakhulu, ukujula kweshaja okuphezulu kuzobangela ukuthi umthamo we-cathode wehle.Lokhu kungenxa yokuthi ukujula kokushaja okuphezulu kubangela ukucindezeleka okukhiqizwa ngaphakathi kwezinhlayiya ze-electrode enhle ukuthi kwande, ngakho ukuguqulwa okwenzekayo nakho kukhulu, okuholela ekulimaleni okukhulu ngomjikelezo ngamunye.