Patent ID: 8178009

Claim:
A slurry for a secondary battery electrode, comprising: an electrode active material; an ambient temperature molten salt composed of a cation component and an anion component; and a polymer, wherein the polymer has a structure derived from a monomer component which includes a salt monomer composed of an onium cation having a polymerizable functional group and an organic anion having a polymerizable functional group, wherein the onium cation is selected from the group consisting of: fluoronium cation (F + ); oxonium cation (O + ); sulfonium cation (S + ); ammonium cation (N + ); and phosphonium cation (P + ), and wherein the organic anion is selected from the group consisting of: RO − anions obtained by dissociation of protons of hydroxyl-containing organic compounds; RS − anions obtained by dissociation of protons of thiolates and thiophenolates; RSO 3 − ; RCOO − ; phosphorus-containing derivative anions: R x (OR) y (O) z P − obtained by replacing a portion of the hydroxyl groups of phosphoric acid or phosphorous acid with organic groups where x, y and z are integers of 0 or greater, and x+y+2z=3 or x+y+2z=5; R x (OR) y B − where x and y are integers of 0 or greater, and x+y=4; R x (OR) y Al − where x and y are integers of 0 or greater, and x+y=4; (EA) 3 C − ; (EA) 2 N − ; and anions wherein all or a portion of hydrogen(s) on the carbon(s) in the R as defined below is/are replaced with halogen atoms, wherein: EA independently represents hydrogen or an electron-withdrawing group, where at least one EA in an anion contains a polymerizable functional group, R independently represents: hydrogen; a substituted or unsubstituted alkyl C n H 2n+1 ; aryl (R′) n —C 6 H 5-n —; aralkyl (R′) m —C 6 H 5-m —C n H 2n —; alkenyl R′—CH═CH—R′—; aralkenyl (R′) n —C 6 H 5-n —CH═CH—R′—; alkoxyalkyl R′—O—C n H 2n —; or acyloxyalkyl R′—COO—C n H 2 —, where R may have a cyclic structure and may contain a heteroatom, and where at least one R in an anion contains a polymerizable functional group, R′ independently represents hydrogen or a substituted or unsubstituted C20 or lower alkyl group, m represents an integer of 1-5, and n represents an integer of 1-20.