| abstract |
To realize constituent elements for realizing a nonaqueous secondary battery having high energy density and high repeating stability, and a nonaqueous secondary battery using the same. n To present also a lithium ion secondary battery of light weight and high energy density to be used in various electronic appliances and power source of electric vehicle or the like. n By using vanadium oxide expressed as M 2+x V 4 O 11 , where x is 0 or more to 1 or less, and M is a monovalent metal ion such as Cu and Li, as positive electrode, a nonaqueous secondary battery having high energy density and high repeating stability is obtained. Moreover, by using the carbon obtained by heating a cured resin by adding an aromatic compound of 2 to 10 rings to a high polymer before curing, as negative electrode, a nonaqueous secondary battery of high energy density is obtained. By composing an electrochemical element by using a gel or solid ion conductor having an iron containing an organic cationic structure including quaternary nitrogen or its derivative and different cations at least as coexistent ions, a nonaqueous secondary battery of high energy density is obtained. n As the current collector of the battery, by using a graphite sheet obtained by baking a high polymer film, a lithium ion secondary battery of light weight, excellent cycle characteristics and high energy density is presented. |