Lub zog hluav taws xob lithium roj teeb txhim kho thiab kev tshawb fawb ntawm cov khoom siv anode
Apr 02, 2023
Tam sim no, cov ntaub ntawv lag luam ntawm lub anode ntawm lub hwj chim lithium roj teeb yog tag nrho cov ntaub ntawv carbon, nrog rau cov ntaub ntawv graphite carbon, xws li graphitized mesophase carbon hlaws thiab qee cov pyrolysis nyuaj carbon. Tam sim no, lub peev xwm tshwj xeeb ntawm cov ntaub ntawv carbon feem ntau tsis tshaj 400mA·h / g, txawm hais tias lub peev xwm tshwj xeeb ntawm cov ntaub ntawv cathode feem ntau siv tam sim no feem ntau siab dua (120 txog 180mA·h / g), tab sis vim muaj kev vibration ntawm Cov ntaub ntawv tsis tshua muaj cov pa roj carbon monoxide, ua ke nrog kev siv cov ntawv hnyav tooj liab nrog cov ntawv sau rau qhov tsis zoo electrode, thiab kev siv cov ntawv sib zog aluminium foil ntawv rau qhov zoo electrode, cov ntaub ntawv xyaum ntawm lub peev xwm zoo electrode yog ntau dua li ntawm tsis zoo electrode.
Yog li ntawd, lub zog tshwj xeeb ntawm lub roj teeb yuav tsum tau txhim kho ntxiv, thiab kev ua haujlwm ntawm lithium yog tus yuam sij rau kev txhim kho. Nrog rau qhov muaj koob meej ntawm cov khoom siv hluav taws xob, qhov kev thov rau cov roj teeb uas muaj zog tshwj xeeb kuj nce ntxiv. Tam sim no, tsuas yog qee cov ntaub ntawv tsis ua raws li cov kev xav tau. Txawm hais tias cov ntaub ntawv carbon muaj kev ua haujlwm zoo dua qub, nws lub peev xwm tshwj xeeb yog tsawg; Lwm txoj haujlwm electrochemical ntawm cov ntaub ntawv carbon nrog lub peev xwm tshwj xeeb raug cuam tshuam. Cov ntaub ntawv alloy muaj lub zog tshwj xeeb, tab sis vim qhov loj ntim nthuav dav thaum lub sij hawm lithium nkag mus, cov ntaub ntawv kev ua haujlwm nyob deb ntawm cov kev xav tau txaus siab. Tin-based composite oxides muaj cov khoom zoo tshaj plaws kev caij tsheb kauj vab tab sis tsis cuam tshuam nrog thawj qhov tsis muaj peev xwm poob. Los ntawm qhov kev xav no, nws yog ib qho kev xaiv tsim nyog los muab cov txiaj ntsig zoo ntawm ntau yam ntaub ntawv thiab lub hom phiaj ua ke los tiv thaiv lawv tus kheej qhov tsis txaus.
