| 摘要 |
PROBLEM TO BE SOLVED: To provide a stable, high-performance, inexpensive electrolyte minimized in impurity and easy to manufacture and handle to provide a long-lived, highly reliable, and high-performance nonaqueous battery by adding an alumina fine particle having a high specific surface area of a specified value or more and a low water content of a specified value or less to an organic electrolyte. SOLUTION: This organic electrolyte comprises at least one each of alumina fine particles, organic solvents and electrolytic salts. The alumina particle has a BET specific surface area of 10 m<2> /g or more, a maximum diameter of 5 μm or less, and a water content (Karl Fischer titration value) of 3000 ppm or loess, and its addition amount is set to 0.05-30 wt.% of the whole electrolyte. The electrolyte preferably has a viscosity of 2000 cPs (shear rate of 20-400 s<-1> ) or less at room temperature, a moisture value of 200 ppm or less, and a free acid quantity (neutralization titration value) of 100 ppm or less. An organic solvent is formed of cyclic and/or chain carbonates, and the electrolyte is preferably formed of an alkali metal salt, quaternary ammonium salt, or transition metal salt. |
