A battery is provided. The battery includes a positive electrode; a negative electrode; and an electrolyte that includes an electrolyte salt, a solvent, a matrix polymer, and a ceramic powder; wherein the matrix polymer is at least one selected from the group consisting of polyvinyl formal, polyacrylic acid ester, polyvinylidene fluoride, a copolymer of polyvinyl formal, a copolymer of polyacrylic acid ester and a copolymer of polyvinylidene fluoride; and wherein a mass ratio of the ceramic powder to the matrix polymer ranges from 2/1 to 5/1.