Improved durability of SOEC stacks for high temperature electrolysis
Improved durability of SOEC stacks for high temperature electrolysis
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DOI：
10.1016/j.ijhydene.2012.09.176
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发表时间：
2013-01
影响因子：
7.2
通讯作者：
Xiaoyu Zhang;J. O'Brien;R. O’Brien;J. Hartvigsen;G. Tao;G. Housley
中科院分区：
文献类型：
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作者：
Xiaoyu Zhang;J. O'Brien;R. O’Brien;J. Hartvigsen;G. Tao;G. Housley
爱达荷国家实验室进行了一项实验研究，展示了固体氧化物电解电池 (SOEC) 和电堆的长期耐用性的最新改进。给出了五个堆栈测试的结果。对于这些测试，Ceramatec Inc. 提供了电解质支持的 SOEC 堆栈，材料与系统研究公司 (MSRI) 提供了电极支持的 SOEC 堆栈。长期耐久性测试通常持续 1000 小时或更长。基于 Ceramatec 和 MSRI 开发的技术的堆栈测试表明，电解模式的耐用性显着提高。 MSRI 和 Ceramatec 电池堆的长期降解率分别为 3.2%/khr 和 4.6%/khr。最近的一个 Ceramatec 堆栈甚至在运行 1900 小时后出现了负面退化（性能改善）。电极和电解质材料、互连涂层以及电解质-电极界面微观结构的优化有助于提高 SOEC 电堆的耐用性。
An experimental study has been conducted at Idaho National Laboratory to demonstrate recent improvements in long-term durability of solid oxide electrolysis cells (SOEC) and stacks. Results of five stack tests are presented. Electrolyte-supported SOEC stacks were provided by Ceramatec Inc. and electrode-supported SOEC stacks were provided by Materials and Systems Research Inc. (MSRI), for these tests. Long-term durability tests were generally operated for durations of 1000 h or more. Stack tests based on technologies developed at Ceramatec and MSRI have shown significant improvement in durability in the electrolysis mode. Long-term degradation rates of 3.2%/khr and 4.6%/khr were observed for MSRI and Ceramatec stacks, respectively. One recent Ceramatec stack even showed negative degradation (performance improvement) over 1900 h of operation. Optimization of electrode and electrolyte materials, interconnect coatings, and electrolyte–electrode interface microstructures contribute to improve the durability of SOEC stacks.