Maitiro ekuvandudza kuchengetedzwa kwe lithium mabhatiri

Kubatsira kwemotokari itsva dzemagetsi ndeyekuti dzinonyanya kuderera-kabhoni uye zvakatipoteredza zvine hushamwari kupfuura mota dzinofambiswa nepeturu. Inoshandisa mafuta asina kujairika emotokari semagetsi emagetsi, akadai se lithiamu mabhatiri, hydrogen mafuta, etc. Kushandiswa kwe lithium-ion bateri yakakura kwazvo, kunze kwemotokari itsva dzemagetsi, nharembozha, laptops, tablet PC, simba rekufambisa, mabhasikoro emagetsi. , midziyo yemagetsi, nezvimwewo.

Nekudaro, kuchengetedzeka kwemabhatiri e-lithium-ion hakufanirwe kuderedzwa. Tsaona dzinoverengeka dzinoratidza kuti kana vanhu vakachajiswa zvisina kufanira, kana tembiricha yakadzika yakanyanyisa, zviri nyore kwazvo kukonzeresa lithium-ion bhatiri kupisa kunongoerekana kwaitika, kuputika, iyo yave nzvimbo huru inorwadza mukuvandudzwa kwe lithium-ion mabhatiri.

Kunyangwe zvimiro zve lithium bhatiri pachayo inosarudza "inopfuta uye inoputika" magumo, asi hazvigoneke zvachose kudzikisa njodzi nekuchengetedza. Nekuenderera mberi kwekuenderera mberi kwehunyanzvi hwebhatiri, ese makambani enharembozha uye makambani matsva emotokari yemagetsi, kuburikidza neinonzwisisika bhatiri manejimendi system uye yekupisa manejimendi system, bhatiri rinokwanisa kuve nechokwadi chekuchengetedza, uye harizoputika kana zvinongoerekana zvaita kupisa.

1.Kuvandudza kuchengetedzwa kwe electrolyte

Pane reactivity yakakwirira pakati pe electrolyte uye zvose zvakanaka uye zvisina kunaka electrodes, kunyanya pakupisa kwepamusoro. Kuvandudza kuchengetedzwa kwemabhatiri, kuvandudza kuchengetedzwa kwe electrolyte ndeimwe yenzira dzinoshanda. Nekuwedzera mashandiro ekuwedzera, kushandisa nyowani lithium munyu uye kushandisa zvinonyungudutsa zvitsva, njodzi dzekuchengetedza electrolyte dzinogona kugadziriswa zvinobudirira.

Zvinoenderana neakasiyana mabasa ezviwedzere, anogona kukamurwa muzvikamu zvinotevera: kuchengetedza kuchengetedza zvinowedzera, firimu-kuumba additives, cathode kuchengetedza additives, lithium salt stabilization additives, lithium precipitation kukurudzira additives, muunganidzi wemvura anti-corrosion additives, yakawedzera wettability additives. , nezvimwewo.

2. Kuvandudza kuchengetedzwa kwezvinhu zve electrode

Lithium iron phosphate uye ternary composites inoonekwa seyakaderera-mutengo, "yakanakisa chengetedzo" cathode zvinhu zvine mukana wekunyanya kushandiswa muindasitiri yemotokari yemagetsi. Kune iyo cathode zvinhu, iyo yakajairika nzira yekuvandudza kuchengetedzeka kwayo kuchinjika kuchinjika, senge simbi oxides pamusoro peiyo cathode zvinhu, inogona kudzivirira yakananga kusangana pakati peiyo cathode zvinhu uye electrolyte, inhibit cathode zvinhu chikamu shanduko, kuvandudza chimiro chayo. kugadzikana, kuderedza kusagadzikana kwema cations mune lattice, kuitira kuderedza mativi ekuita kupisa kugadzirwa.

Iyo yakaipa electrode zvinhu, sezvo nzvimbo yaro inowanzova chikamu che lithium-ion bhatiri inonyanya kunetseka nekuparara kwe thermochemical uye exotherm, kuvandudza kugadzikana kwekupisa kweiyo SEI firimu inzira yakakosha yekuvandudza kuchengetedzwa kweiyo negative electrode zvinhu. Kugadzikana kwekupisa kwezvinhu zveanode zvinogona kuvandudzwa nekushata oxidation, simbi uye simbi oxide deposition, polymer kana kabhoni cladding.

3. Kuvandudza dhizaini yekudzivirira yebhatiri

Pamusoro pekuvandudza kuchengetedzeka kwezvinhu zvebhatiri, matanho akawanda ekuchengetedza ekuchengetedza anoshandiswa mukutengesa lithium-ion mabhatiri, senge kuseta mavharuvhu ekuchengetedza bhatiri, fuse inonyungudika inopisa, kubatanidza zvinhu zvine tembiricha yakanaka coefficients munhevedzano, uchishandisa thermally sealed diaphragms, kurodha kuchengetedzwa kwakakosha. maseketi, uye yakatsaurirwa bhatiri manejimendi masisitimu, zvakare nzira dzekusimudzira chengetedzo.

Nguva yekutumira: Feb-14-2023