Patent ID: 7488559

Claim:
A solid electrolyte, comprising: an organic/inorganic composite material having pores with a mean diameter of 1 to 30 nm and a skeleton comprising at least one structural unit expressed by the following Formula (1) wherein R 1 is an organic group with at least one carbon atom, and M is a metal atom; the carbons of R 1 to which M is bonded may be the same or different; R 2 is a hydrogen atom, a hydroxyl group, or a hydrocarbon group; x is an integer obtained by subtracting 1 from the valence of the metal M, n is an integer greater than or equal to 1 and less than or equal to x, and m is an integer greater than or equal to 1; wherein said organic/inorganic composite material has at least one functional group having an ion exchange function said functional group being bonded to an organic group inside the pores; wherein at least 60% of a total pore volume of said organic/inorganic composite material is included in the range of +/−40% of the mean pore diameter on the pore diameter distribution curve.