PURPOSE: To lower discharge starting voltage and minimum discharge retaining voltage than these of a cathode, formed with La1-xSrxCoO3 and La1-xSrMnO3 etc., having perovskite type crystal structuer suggested so far needless to say Ni.
CONSTITUTION: An oxide conductor, having perovskite type crystal structure expressed in a chemical formula (A11-xA2) (B11-yB2y)O3 (provided that A1, A2, B1, and B2 represent elements respectively, and X and Y show real numbers of 0-1. Also A1 and A2 give elements arranged in positions called an A site, and B1 and B2 show elements arranged in positions called a B site.), and including at least substances other than transition elements in (B11-yB2y) in the chemical formula above mentioned. Provided that, the transition elements mean all elements included in first-fourth transition elements.
Yuu Watanabe
Hiroki Kono
