| 摘要 |
PURPOSE: To prevent irreversible grid changes that cause a decrease in the discharge capacity of a secondary electrochemical cell having an insert material as an active cathode material. CONSTITUTION: A secondary electrochemical cell includes as an active cathode material a first insert material, such as V6 O13 , into which ions are inserted during discharge. In order to prevent an irreversible grid change that causes a decrease in discharge capacity, a discharge is terminated before crossing a threshold cell voltage. A second insert material that initiates a discharge before reaching the threshold cell voltage, such as titanium oxide, is contained in a cathode in a slight proportion to suppress irreversible changes. |
