Liquid metal fuel battery

The invention provides a liquid metal fuel battery which is formed by assembly of a cathode flow field plate, a gas cathode, an electrolyte film and an anode flow field plate in turn. An oxidant is injected into a cavity between the cathode flow field plate and the gas cathode, and a fuel is injected into a cavity between the anode flow field plate and the electrolyte film; the fuel is a liquid metal. The characteristics that a metal is molten to flow because a battery working temperature is higher than a melting point of the fuel and a product metal hydroxide is also in a liquid flowing stateafter moisture absorption and deliquescence are used; in addition, in a discharging mode of the reaction product, the difference between the capillary forces of the liquid and gas in pores of a hydrophobic gas cathode is used, interlaced separation of the liquid and the gas in space is realized, and not only is the gas-liquid contact effective reaction area enlarged, but also channels are not blocked. 本发明提供种液态金属燃料电池，包括依次