Special lithium batteries refer to a special type of lithium battery technology, which are different from traditional lithium-ion batteries (Li-ion) in terms of electrochemical performance, structural design, and material composition. Compared with civilian lithium-ion batteries, special lithium-ion batteries usually have the characteristics of high energy density, high power output, long cycle life, high safety and stability.

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Specific types of special lithium batteries include lithium polymer batteries, lithium sulfur batteries, lithium air batteries, lithium titanate batteries, etc.:

Lithium-polymer battery (Li-Polymer): Similar to lithium-ion batteries, but uses a polymer matrix instead of a liquid electrolyte, which has higher energy density and flexibility.

Lithium iron phosphate battery (LiFePO4): Using lithium iron phosphate as the positive electrode material, it has high safety, long cycle life and low energy density.

Lithium-sulfur battery (Li-S): Using sulfur as the cathode material, it has the characteristics of high energy density, low cost and environmental friendliness, but it is still in the research and development stage.

Lithium-air battery (Li-Air): releases energy by reacting lithium with oxygen, which has a very high theoretical energy density, but still faces technical challenges.