1. Lithium metal batteries: lithium metal batteries generally use manganese dioxide as the cathode material, lithium metal or its alloy metal as the cathode material, and non-aqueous electrolyte solution.
2. Lithium ion batteries: lithium ion batteries generally use lithium alloy metal oxide as cathode material, graphite as cathode material and non-aqueous electrolyte.
Although the energy density of lithium metal battery is high, it can theoretically reach 3860 watts / kg. However, due to its unstable nature and inability to charge, it cannot be used as a power battery for repeated use. Lithium ion battery is developed as a main power battery because of its ability to recharge repeatedly. However, due to the coordination of different elements, the cathode materials have great differences in performance in all aspects, resulting in increased disputes over the route of cathode materials in the industry
Basic principle of lithium battery
Basic principle of lithium battery
Lithium metal battery:
Lithium metal batteries generally use manganese dioxide as cathode material, lithium metal or its alloy metal as cathode material, and non-aqueous electrolyte solution.
Discharge reaction: li+mno2=limno2
Lithium ion battery:
Lithium ion batteries generally use lithium alloy metal oxide as cathode material, graphite as cathode material and non-aqueous electrolyte.
The reaction on the charging positive electrode is
Licoo2=li (1-x) coo2+xli++xe- (Electronic)
The reaction on the charging negative electrode is
6C+xLi++xe- = LixC6
Total reaction of rechargeable battery: licoo2+6c = Li (1-x) coo2+lixc6