| abstract |
Provided is a fluoropolymer electrolyte material which brings about improved processability and is easy to produce. The fluoropolymer electrolyte material is an electrolyte emulsion comprising an aqueous medium and a fluoropolymer electrolyte dispersed therein, and is characterized in that the fluoropolymer electrolyte has monomer units containing an SO 3 Z group (Z represents an alkali metal, an alkaline earth metal, a hydrogen atom, or NR 1 R 2 R 3 R 4 , wherein R 1 , R 2 , R 3 , and R 4 each independently represents a C 1-3 alkyl or a hydrogen atom), has an equivalent weight (EW) of 250-700 and a proton conductivity as measured at 110ºC and a relative humidity of 50% RH of 0.10 S/cm or higher, is spherical particles having an average particle diameter of 10-500 nm, and has a value of (number of SO 2 F groups)/(number of SO 3 Z groups) of from 0 to 0.01. |