Solid polymer electrolysis system for tritium enrichment using gold catalyst
Solid polymer electrolysis system for tritium enrichment using gold catalyst
Wei Liu 1Chenxu Wang 2Lixiao Zhu 3Xiaochong Xue 3Youshi Zeng 3Ke Deng 3Qin Zhang 3Jinglin Li3
作者信息
- 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences;Wuwei Institute of Advanced Energy; University of Chinese Academy of Sciences
- 2. Shanghai Institute of Applied Physics, Chinese Academy of Sciences; University of Chinese Academy of Sciences
- 3. Shanghai Institute of Applied Physics, Chinese Academy of Sciences
- 折叠
摘要
Solid polymer electrolyte (SPE) water electrolysis can effectively concentrate tritium using the tritium-to hydrogen (T/H) separation factor, serving as a crucial reference standard. The catalyst and optimization of the working conditions can significantly enhance the kinetic isotope effect (KIE), thereby improving the separation factor. In this study, various commercial cathode catalysts and operating conditions were tested. The use of Au/C in the cathode resulted in a separation factor that was twice that of Pt/C. The working conditions included the electrolysis temperature and electrolytic current. For this purpose, a novel tritium enrichment system (TES) was developed using Au/C as the cathode under optimized working conditions of 2.5°C and 25A. It achieved a high T/H separation factor of 20.44 via the Direct Method (DM) and a typical tritium recovery factor of 75.7%. Our research shows that the Enrichment Method (EM) is more convenient, but more susceptible to the influence of dead volume, with an error rate of 43%. Additionally, the recovery factor of the system in the replicated experiments varied minimally (0.4–0.6%), demonstrating high repeatability.
Abstract
Solid polymer electrolyte (SPE) water electrolysis can effectively concentrate tritium using the tritium-to hydrogen (T/H) separation factor, serving as a crucial reference standard. The catalyst and optimization of the working conditions can significantly enhance the kinetic isotope effect (KIE), thereby improving the separation factor. In this study, various commercial cathode catalysts and operating conditions were tested. The use of Au/C in the cathode resulted in a separation factor that was twice that of Pt/C. The working conditions included the electrolysis temperature and electrolytic current. For this purpose, a novel tritium enrichment system (TES) was developed using Au/C as the cathode under optimized working conditions of 2.5C and 25A. It achieved a high T/H separation factor of 20.44 via the Direct Method (DM) and a typical tritium recovery factor of 75.7%. Our research shows that the Enrichment Method (EM) is more convenient, but more susceptible to the influence of dead volume, with an error rate of 43%. Additionally, the recovery factor of the system in the replicated experiments varied minimally (0.40.6%), demonstrating high repeatability.关键词
Tritium enrichment system (TES)/Separation factor/Gold catalyst/Solid polymer electrolyte (SPE) water elec trolysis/Hydrogen isotope separationKey words
Tritium enrichment system (TES)/Separation factor/Gold catalyst/Solid polymer electrolyte (SPE) water elec trolysis/Hydrogen isotope separation引用本文复制引用
Wei Liu,Chenxu Wang,Lixiao Zhu,Xiaochong Xue,Youshi Zeng,Ke Deng,Qin Zhang,Jinglin Li.Solid polymer electrolysis system for tritium enrichment using gold catalyst[EB/OL].(2026-09-15)[2026-09-23].https://chinaxiv.org/abs/202609.00160.学科分类
核燃料、核燃料生产
