Patent ID: 8669015

Claim:
A solid-state fuel cell comprising: an anode; an anode side chemical electrolyte protection layer disposed on the anode; a hydrogen ion conductive solid oxide dense film disposed on the anode side chemical electrolyte protection layer; a cathode side chemical electrolyte protection layer disposed on the hydrogen ion conductive solid oxide dense film; and a cathode disposed on the cathode side chemical electrolyte protection layer, wherein: the anode side chemical electrolyte protection layer and the cathode side chemical electrolyte protection layer prevent penetration of CO 2 and SOx into the hydrogen ion conductive solid oxide dense film, and the interface between the anode side chemical electrolyte protection layer and the hydrogen ion conductive solid oxide dense film and the interface between the hydrogen ion conductive solid oxide dense film and the cathode side chemical electrolyte protection layer have rough and uneven microstructures, respectively.