附近的新茶嫩茶

Lithium metal batteries: Lithium metal batteries generally use manganese dioxide as cathode material, lithium metal or its alloy metal as anode material, and non-aqueous electrolyte solution.  

Basic principle of lithium battery

    Discharge reaction: Li + MnO2 = LiMnO2   Lithium ion battery: Lithium ion batteries generally use lithium alloy metal oxide as cathode material, graphite as anode material and non-aqueous electrolyte. The reaction on the positive electrode of charging is LiCoO2 = = Li (1-x) coo2 + XLI + + XE - (electron) The reaction on the negative electrode is 6C+XLi++Xe- = LixC6 Total reaction of rechargeable battery: LiCoO2 + 6C = Li (1-x) coo2 + lixc6   Positive electrode Cathode material: there are many optional cathode materials, and lithium iron phosphate is widely used in mainstream products. Comparison of different cathode materials:

LiCoO2	3.7 V	140 mAh/g
Li2Mn2O4	4.0 V	100 mAh/g
LiFePO4	3.3 V	100 mAh/g
Li2FePO4F	3.6 V	115 mAh/g

Positive reaction: lithium ion is embedded during discharge, and lithium ion is de embedded during charging. Charging: LiFePO4 → li1-xfepo4 + XLI + + XE - discharging: li1-xfepo4 + XLI + + XE - → LiFePO4.   Negative pole Anode material: graphite. New research has found that titanate may be a better material. Negative electrode reaction: Li ion is de intercalated during discharge and Li ion is intercalated during charging. Charging: XLI + + XE - + 6C → lixc6 During discharge: lixc6 → XLI + + XE - + 6C