CHARGING/DISCHARGING CYCLE ACCELERATION TEST FOR ELECTRODE OF BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a highly reliable life test method for an electrode and a battery which can attain cycle efficiency in a short time. SOLUTION: This method determines cycle efficiency expressed by the formula, by setting discharging electrical amount in respective cycles larger than charging electric camping in the repetitive operations of charging-discharging cycles. In the formula, Qex: electrical amount of initial active material, Qdep: charging electrical amount in respective cycles, Qdep+α: discharging electrical amount in respective cycles (α>0), and (n) :cycle life.