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Lithium battery work principle
Update time: 2015-09-22
Lithium metal batteries:
Batteries typically use lithium metal as manganese dioxide cathode material, lithium metal or an alloy thereof as the negative electrode material, the use of non-aqueous electrolyte solution battery.
Lithium Fundamentals
Lithium Fundamentals
Discharge reaction: Li + MnO2 = LiMnO2
Lithium Ion Battery:
Lithium-ion batteries typically use lithium alloy metal oxide as the cathode material, graphite as the anode material, the use of non-aqueous electrolyte battery.
Charging the positive reaction to
LiCoO2 == Li (1-x) CoO2 + XLi ++ Xe- (electronic)
The reaction occurs on the negative charge of
6C + XLi ++ Xe- = LixC6
Rechargeable battery overall reaction: LiCoO2 + 6C = Li (1-x) CoO2 + LixC6
positive electrode
Cathode material: Optional cathode material many mainstream products use lithium iron phosphate. Different cathode material control:
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
Cathode Reaction: discharge lithium ions, when the rechargeable lithium-ion deintercalation. Charging: LiFePO4 → Li1-xFePO4 + xLi + + xe- discharge: Li1-xFePO4 + xLi + + xe- → LiFePO4.
negative electrode
Anode material: use of graphite. The new study found titanate may be a better material.
Negative reaction: deintercalation of lithium ion discharge, lithium ions during charging.
Charging: xLi + + xe- + 6C → LixC6
Discharge: LixC6 → xLi + + xe- + 6C
The next article: Lithium Introduction
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