Process analysis of nuclear hydrogen production via intermediate temperature SOEC electrolysis
收藏科学数据银行2025-09-28 更新2026-04-23 收录
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资源简介：
When the operating temperature of a Solid Oxide Electrolysis Cell (SOEC) is lower than the outlet temperature of a nuclear reactor, the reactor can be directly coupled with the SOEC as a high-temperature heat source. However, the key to the efficiency and return on investment of this hybrid energy system lies in the expected lifetime of the SOEC. This study assessed Ni-YSZ|YSZ|GDC|LSC fuel electrode support cells’ long-term stability during electrolysis at 650 ◦C with a current density of -0.5A·cm-2 over 1818 h. The average voltage degradation rate of 2.63%·kh-1 unfolded in two phases: an initial rapid decay (90 to 1120 h at 3.58%·kh-1) and a stable decay (1120 to 1818 h at 2.14%·kh-1), emphasizing SOECs’ probability coupling with nuclear reactors at 650 ◦C. Post-1818-hour electrolysis revealed nickel particle formation associated with Ni(OH)x diffusion and re-deposition, alongside a strontium-containing layer causing interface cracking. Despite minimal strontium segregation in the EDS, XPS data indicated surface segregation of Sr. This study provides crucial insights into prolonged SOEC operation, highlighting both its potential and challenges.
提供机构：
Ling-Hong Luo; Ruo-Yun Dai; School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China; Department of Hydrogen Technique, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; Shanghai Hyenergy Technology Co., Ltd., Shanghai 201800, China; Key Laboratory of Interfacial Physics and Technology, Chinese Academy of Sciences, Shanghai 201800, China; Hui-Chao Yao; CNOOC Gas and Power Group/R & D center, Beijing 100020, China
创建时间：
2025-09-28
