▎ 摘　　要

NOVELTY - Method of broadening the voltage range of lithium-ion capacitor, involves using negative electrode pre-lithiated lithium ion capacitor for discharge treatment to widen the voltage range of the capacitor. USE - Method of broadening the voltage range of a lithium-ion capacitor. ADVANTAGE - The method can widen the voltage range of the lithium ion capacitor by simple method, making the energy at a lower voltage to be fully used, so as to improve the energy density of the capacitor.