Comparative studies on performance of radiation-induced and thermal cross-linked ion-exchange membrane for water electrolysis |
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| Authors: | Tina Chakrabarty Amaranadh Jasti N.K. Goel Vinod K. Shahi Sunil Sabharwal |
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| Affiliation: | 1. Electro-Membrane Processes Division, Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), G. B. Marg, Bhavnagar 364002, Gujarat, India;2. Radiation Technology Division, Bhabha Atomic Research Center, Trombay, Mumbai;1. Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, SPTE, South China Normal University, Guangzhou 510006, China;2. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;1. High-Temperature Energy Materials Center, Future Convergence Research Division, Korea Institute of Science and Technology, 39-1, Haweolgok-dong, Seongbuk-gu, Seoul 136-791, Republic of Korea;2. Department of Materials Science and Engineering, Hanyang University, Seoul, Republic of Korea;1. Fuel Cell System and Engineering Group, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, 116023 Dalian, PR China;2. Graduate School of Chinese Academy of Sciences, 19A Yuquan Road, 100049 Beijing, PR China;1. Graduate School of Chemistry, Westfälische Wilhelms-Universität Muenster, Wilhelm-Klemm-Straße 10, 48149 Muenster, Germany;2. Institute of Food Chemistry, Westfälische Wilhelms-Universität Muenster, Corrensstraße 45, 48149 Muenster, Germany |
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| Abstract: | Radiation-induced and thermal cross-linked sulfonated poly(ether sulfone) (SPS)–sulfonated poly(ether ether ketone) (SPK) composite ion-exchange membranes (SPS/SPK(γ) and SPS/SPK(T), respectively) were prepared. Their performances for water electrolysis were comparatively assessed. Thermal cross-linked membrane (SPS/SPK(T)) showed cross-linking of part functional groups (–SO3H) and thus deterioration in membrane conductivity. While, radiation-induced cross-linked membrane (SPS/SPK(γ)) avoided any cross-linking between functional groups and thus conductivity. Electrolysis performances of these membranes were evaluated in comparison with Nafion117 membrane. Relatively low current efficiency (CE) for SPS/SPK and SPS/SPK(T) membranes was due to their high mass transfer (water) via electro-osmotic drag, which was negligible for SPS/SPK(γ) membrane. SPS/SPK(γ) membrane exhibited comparable stabilities and water splitting performance with Nafion117 membrane, which revealed its suitability as substitute for electrochemical applications. |
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