Patent ID: 9640825
Date: 2017-05-02
CPC Classifications: H01M,Y02E,Y02P

Claim:
1. A fuel cell comprising: an anode including transition metal particles and an oxygen ion conductive material; a cathode; and a solid electrolyte layer disposed between the anode and the cathode; the anode after reduction having an interface region within 3 micrometers from the interface between the solid electrolyte layer and the anode, the anode having an active anode layer with a volume ratio of Ni and NiO that is 25 to 50 volume % and the volume ratio of the oxygen ion conductive material that is 50 to 75 volume %, in the interface region, a content rate of silicon being less than or equal to 200 ppm and greater than 1 ppm, a content rate of phosphorus being less than or equal to 50 ppm and greater than 1 ppm, a content rate of chromium being less than or equal to 100 ppm and greater than 1 ppm, a content rate of boron being less than or equal to 100 ppm and greater than 1 ppm, and a content rate of sulfur being less than or equal to 100 ppm and greater than 1 ppm, and the content rates of silicon, phosphorus, chromium, boron and sulfur being present in an inner portion of the transition metal particles or in a particle interface between the transition metal particles.