A nonaqueous secondary battery electrolyte solution for use in a nonaqueous secondary battery comprising vanadium sulfide as a cathode active material and a lithium-containing compound as an anode active material, the nonaqueous secondary battery electroly...

Provided are a power generation method and a power generating element capable of obtaining an electromotive force by utilizing humidity variation in an environment and having excellent operation stability. An aqueous solution of an ionic compound having de...