Lub hauv paus ntsiab lus ntawm Lithium roj teeb tshuaj tiv thaiv
Lithium roj teeb feem ntau muab faib ua ob pawg:
Lithium ion roj teeb: Lithium ion roj teeb feem ntau yog lub roj teeb uas siv lithium alloy hlau oxide ua cov khoom siv hluav taws xob zoo, graphite li cov khoom siv hluav taws xob tsis zoo, thiab cov khoom siv hluav taws xob tsis zoo.
Lithium hlau roj teeb: Lithium hlau roj teeb feem ntau yog ib lub roj teeb uas siv manganese dioxide raws li cov khoom siv electrode, hlau lithium lossis nws cov hlau alloy ua cov khoom tsis zoo electrode, thiab siv cov tshuaj tsis muaj dej electrolyte.
Lithium hlau roj teeb
Cov roj teeb lithium hlau yog ib hom roj teeb uas siv lithium hlau lossis lithium alloy ua cov khoom siv hluav taws xob tsis zoo thiab siv cov tshuaj tsis muaj dej electrolyte. Lub roj teeb lithium ntxov tshaj plaws siv cov tshuaj tiv thaiv hauv qab no: Li+MnO2=LiMnO2, cov tshuaj tiv thaiv yog cov tshuaj tiv thaiv oxidation-txo, tawm.
Lithium ion roj teeb
zoo electrode
Cov khoom siv cathode: Muaj ntau cov ntaub ntawv cathode, thiab feem ntau ntawm cov khoom siv tseem ceeb tam sim no siv lithium hlau phosphate. Kev sib piv ntawm cov khoom siv cathode sib txawv:
LiCoO2 3.7 V 140 mAh/g
Li2Mn2O4 4.0 V 100 mAh/g
LiFePO4 3.3 V 100 mAh
Li2FePO4F 3.6 V 115 mAh/g
Lithium Hlau Phosphate
Cov tshuaj tiv thaiv electrode zoo: Lithium ions yog intercalated thaum tawm, thiab lithium ions yog deintercalated thaum them nyiaj. Thaum them nyiaj: LiFePO4 → Li1-xFePO4 + xLi+ + xe- Thaum tso tawm: Li1-xFePO4 + xLi+ + xe- → LiFePO4
Cov khoom siv anode: graphite feem ntau yog siv. Kev tshawb fawb tshiab tau pom tias titanate yuav yog cov khoom siv zoo dua. Cov tshuaj tiv thaiv tsis zoo: Lithium ions yog deintercalated thaum lub sij hawm tso tawm, thiab lithium ions raug tso rau thaum them nyiaj. Thaum them nyiaj: xLi+ + xe- + 6C → LixC6 Thaum tso tawm: LixC6 → xLi+ + xe- + 6C
Lithium Cobalt Oxide
Cov tshuaj tiv thaiv ntawm qhov zoo electrode yog:
LiCoO2=Charge=Li1-xCoO2+XLi+ + Xe-
Li1-xCoO2+XLi+ + Xe-=discharge=LiCoO2
Cov tshuaj tiv thaiv ntawm qhov tsis zoo electrode yog:
6C{{1}}XLi+ + Xe-=Charge=LixC6
LixC6=discharge=6C{{2}}XLi+ + Xe-
