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Lithium ion batteries: Is lithium the positive or negative electrode
Release time:
2024-10-18
Lithium in lithium-ion batteries is the negative electrode.
Lithium ion batteries are a type of secondary battery that primarily rely on the movement of lithium ions between the positive and negative electrodes to function. During the charging and discharging process, lithium ions shuttle back and forth between two electrodes for insertion and extraction: during charging, lithium ions are extracted from the positive electrode and inserted into the negative electrode through the electrolyte, resulting in the negative electrode being in a lithium rich state; During discharge, the opposite is true: lithium ions detach from the negative electrode and return to the positive electrode through the electrolyte. The working principle of this so-called "rocking chair battery" allows lithium-ion batteries to be repeatedly charged and discharged, achieving energy storage and release.
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