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Okumura Y.,Kyoto University | Nose Y.,Kyoto University | Katayama J.,Okuno Chemical Industries Co.Ltd. | Uda T.,Kyoto University
Journal of the Electrochemical Society

We focus on the proton-conducting doped - barium zirconate, which has large proton conductivity at intermediate temperature. We found here a phenomenon that acid - etching of the doped barium zirconate in a solution having a specific pH leaves a porous structure on the surface, and demonstrated power generation of hydrogen fuel cell using electroless-plated Pd and Pt on the porously acid-etched electrolyte surface. The short circuit current density of the hydrogen fuel cell was about 430 mA/cm2 at 600°C using thick electrolyte of 500 μm. © 2011 The Electrochemical Society. Source

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