| abstract |
Matrix polymers; Non-aqueous solvents; There is provided a gel electrolyte having an electrolyte solution having an electrolyte salt composed of lithium dissolved in a non-aqueous solvent, wherein the matrix polymer is swollen by the electrolyte solution. The matrix polymer contains polyvinylidene fluoride obtained by copolymerizing at least 3% by weight of hexafluoropropylene to 7.5% by weight or less. Non-aqueous solvents include ethylene carbonate; And at least one solvent selected from the group consisting of dimethyl carbonate, ethylmethyl carbonate, diethyl carbonate, ethylpropyl carbonate, ethylbutyl carbonate and dipropyl carbonate. The content of ethylene carbonate in the nonaqueous solvent is 15% by weight or more and 55% by weight or less, and the total content of at least one solvent in the nonaqueous solvent is 30% by weight or more and 85% by weight or less.n n n n Gel electrolyte, gel electrolyte battery, positive electrode, negative electrode, separator, matrix polymer, non-aqueous solvent |