PURPOSE: To obtain a nonaqueous solvent battery having an excellent ability of electrochemically reducing thionyl chloride and causing little deterioration of its electrochemically reducing ability even after stored for a long period or at high temperature by packing a positive base member with a specific metal complex.
CONSTITUTION: In a nonaqueous solvent battery containing a negative electrode consisting of an alkali metal and electrolyte principally consisting of thionyl chloride also serving as a positive active material, a positive electrode is made by packing a positive base member such as a porous carbon body with a tetraazaannulene metal complex (M-TAA) represented by the general formula in which M preferably represents Co, Fe, Ni, Mn or Cu. The thus obtained positive electrode for a nonaqueous solvent battery has a high electrochemically reducing ability, causes little deterioration of its activity even after stored for a long period or at high temperature and has a low cost. Co-TAA can most favorably be used as the above M-TAA because it has the highest durability and catalytic activity. In addition, it is desirable that the ratio by weight of M-TAA packed in the positive base member to the positive base member be in the range of 1∼10%.
AOKI YOSHIYASU
OOSAKI TAKAHISA
YAMADA SHIYUUJI
MITSUYASU KIYOSHI
SATOU YUUICHI
TOSHIBA BATTERY