| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary power source with excellent voltage resistance and excellent voltage applied characteristics at a high temperature. SOLUTION: This secondary power source has positive electrode containing activated carbon having a surface layer made of silicon dioxide, a negative electrode containing a material prepared by chemically or electrochemically occluding lithium ions in a carbon material capable of occluding/eliminating lithium ions, and an organic electrolyte containing a lithium salt. The surface layer made of silicon dioxide is obtained by adsorbing silicon tetrachloride in activated carbon, then hydrolyzing it. |
