Time：Dec 21, 2022 Views：569
1. Basic structure of lithium battery
Main materials: positive pole, negative pole, electrolyte, diaphragm
Structure: round and square; Lamination and winding
Form: polymer (soft package), liquid lithium ion (steel shell)
2. Working principle of lithium battery
Positive material: LiMn2O4, negative material: graphite
During charging, Li+in the positive electrode and Li+in the electrolyte gather towards the negative electrode to obtain electrons, which are reduced to Li embedded in the carbon material of the negative electrode. During discharge, Li embedded in the negative carbon material loses electrons, enters the electrolyte, and Li+in the electrolyte moves to the positive electrode.
3. Composition principle of lithium battery
① Positive pole construction
LiMn2O4 (lithium manganate)+conductive agent (acetylene black)+adhesive (PVDF)+collector (aluminum foil) cathode
② Negative pole structure
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