The invention discloses a self-humidifying fuel
cell. The fuel
cell is formed by superposing a plurality of monomers, wherein each
monomer comprises a
cathode flow field plate, an
anode flow field plate, a sealing piece and a film
electrode; the film
electrode consists of a reaction area and a humidifying area; corresponding reaction areas and humidifying areas are contained in the
anode flow field plate and the
cathode flow field plate; the
cathode reaction air enters the fuel
cell monomers, passes through the humidifying area of the cathode flow field plate and enters the reaction area to participate an electrochemical reaction; the completely reacted air enters the humidifying area on the
anode flow field plate through a gas channel formed on the film
electrode; and the air passing through the reaction area has
high humidity, and the water can humidify the inlet
cathode reaction air through the
proton exchange film of the humidifying area on the film electrode. The inlet air is humidified by directly utilizing the air exhaust, the humidifying area and the reaction area are positioned on the same film electrode, the fuel cell is simple in structure, the fuel cell stack integration is not influenced, the water management problem of the fuel cell can be greatly solved, and the
power density of a fuel
cell system is improved. The fuel cell can be applied to various fields of various
electronic equipment power supplies, the uninterrupted power
system, the electric automobile engine
system and the like.