Patent ID: 8182658

Claim:
An electrochemical device, comprising: an anode; a cathode; and an electrolyte layer arranged between the anode and the cathode, the electrolyte layer including: a first electrolyte constituting a first conductive pathway connecting the anode and the cathode; and a second electrolyte constituting a second conductive pathway connecting the anode and the cathode, the second electrolyte exhibiting conduction properties different from those of the first electrolyte, wherein the first electrolyte and the second electrolyte have different conduction properties with respect to temperature, the first electrolyte is a proton conductive electrolyte, the second electrolyte is an oxygen ion conductive electrolyte, the anode is shared between the first electrolyte and the second electrolyte, and the cathode is shared between the first electrolyte and the second electrolyte, wherein the electrochemical device automatically uses the pathway having the highest conductivity corresponding to the environment.