Automatic regulation of hydrogen partial pressure using a proton conducting ceramic based on SrCeO3 |
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| Affiliation: | 1. Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China;2. Building Energy Research Group, Department of Building and Real Estate, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong 999077, PR China;3. School of Chemical Engineering, Shandong University of Technology, Zibo, Shandong 255049, PR China;4. School of Materials Science and Engineering, Georgia Institute of Technology, 771Ferst Drive, Atlanta, GA 30332-0245, USA;1. School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;2. School of Civil Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;1. School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, China;2. School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255049, China;3. National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China;1. The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, PR China;2. New Energy Research Institute, College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China;3. Key Laboratory of Sensor Analysis of Tumor Marker Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao o 266042, PR China;4. School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, GA 30332-0245, USA;1. School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom;2. Institute for Surgical Technology & Biomechanics, University of Bern, Stauffacherstrasse 78, CH-3014 Bern, Switzerland;1. Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China;2. National Engineering Laboratory for Modern Materials Surface Engineering Technology & The Key Lab of Guangdong for Modern Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou, 510650, China;3. School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, GA, 30332-0245, USA |
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| Abstract: | Electrochemical regulation of hydrogen partial pressure in flowing gas was examined using a proton-conducting ceramic tube made of Yb-doped SrCeO3. Hydrogen partial pressure in the test gas was controlled by electrochemical hydrogen pump. When pumping current was controlled based on the Faraday's law, hydrogen content in the test gas with a constant flow-rate was well regulated, while change in flow-rate of the gas caused some deviation of hydrogen partial pressure from that desired. The pumping current could be determined in a self-correcting manner, which was efficient to regulate gas even with changes in flow-rate and/or initial hydrogen content in the gas. |
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