초록 ▼

A lightweight and inexpensive solid polymer electrolyte fuel cell having a simple structure wherein a stack is efficiently cooled to be able to cope with a high output density. Fuel gas flows through a fuel gas flow path provided in the stack while flowing air as an oxidizing agent through air react

A lightweight and inexpensive solid polymer electrolyte fuel cell having a simple structure wherein a stack is efficiently cooled to be able to cope with a high output density. Fuel gas flows through a fuel gas flow path provided in the stack while flowing air as an oxidizing agent through air reactive gas flow path to generate electric power. An air cooling gas flow path is provided inside the stack. Water is added to air fed from an air feed blower with a water feed unit. Humidified air flows through the air cooling gas flow path, and then flows through the air reactive gas flow path. Discharged air is cooled in a condenser to condense water, and the resulting condensed water is recirculated to the water feed unit.

대표청구항 ▼

[ What is claimed is:] [1.] A solid polymer electrolyte fuel cell comprising:a fuel cell stack obtained by laminating a plurality of fuel cells each including a membrane-electrode assembly formed by joining a catalyst layer for fuel gas and a catalyst layer for air to respective surfaces of a solid

[ What is claimed is:] [1.] A solid polymer electrolyte fuel cell comprising:a fuel cell stack obtained by laminating a plurality of fuel cells each including a membrane-electrode assembly formed by joining a catalyst layer for fuel gas and a catalyst layer for air to respective surfaces of a solid polymer electrolyte membrane;diffusion layers having said membrane-electrode assembly interposed therebetween;gas-impermeable separators having said diffusion layers interposed therebetween, said gas impermeable separators being provided with an air cooling gas flow path hermetically sealed from the fuel cell stack and an air reactive gas flow path feeding along said catalyst layer for air; anda circuit wherein air preliminarily admixed with water flows through said air cooling gas flow path, and then flows through said air reactive gas flow path.