Ye Xiaofeng, Miao Xiaoyun, Zhu Xingzhi, Wang Zhengfeng, Wen Jianjun, Wen Zhaoyin
CAS Key Laboratory of Materials for Energy Conversion, State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics Chinese Academy of Sciences, Shanghai, 200050, P. R. China.
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
Small. 2025 Jun;21(22):e2503162. doi: 10.1002/smll.202503162. Epub 2025 Apr 8.
Protonic Ceramic Electrolysis Cells (PCECs) attract much attention for efficient green hydrogen production in recent years, however, their application is still limited due to the lack of stable and robust large area single cells. In this paper, small batch production of large area tubular PCEC single cells with 10-31 cm effective area is reported, and PCEC stacks are assembled and evaluated. The assembled 4-cell-stack in parallel based on BaZrYO (BZY) electrolyte cells achieves 26 W and 257 mA cm at 1.4 V, and it maintains hydrogen production for 15 200 h at 700 °C with a degradation rate of 1.4% 1000 h. Ni agglomeration and BaCO formation are found to be the main degradation mechanisms by post-mortem analysis. The added BaCeZrYO (BCZY) electrolyte interlayer improves the electrochemical performance and the 15 cm single cell can get an electrolysis current density of 200 mAcm at 1.3 V and 550 °C. The assembled 4-cell-stack in combined serial and parallel connections achieves 58 W at 650 °C. Several thermal cycles to room temperature of the single cell and stack are both achieved to show structural stability and reliability. All these results show excellent stability of BZY material and Ni-BCZY electrode supported tubular structure for PCEC applications.
近年来，质子陶瓷电解槽（PCEC）因其在高效绿色制氢方面的应用而备受关注，然而，由于缺乏稳定且坚固的大面积单电池，其应用仍然受到限制。本文报道了小批量生产有效面积为10 - 31平方厘米的大面积管状PCEC单电池，并对PCEC电池堆进行了组装和评估。基于BaZrYO（BZY）电解质电池组装的4电池并联电池堆在1.4伏时实现了26瓦和257毫安/平方厘米的功率，并且在700℃下能够持续产氢15200小时，降解率为每1000小时1.4%。通过事后分析发现镍团聚和碳酸钡形成是主要的降解机制。添加的BaCeZrYO（BCZY）电解质中间层改善了电化学性能，15厘米的单电池在1.3伏和550℃下可获得200毫安/平方厘米的电解电流密度。串联和并联组合连接的4电池电池堆在650℃下实现了58瓦的功率。单电池和电池堆都经历了几次到室温的热循环，以展示结构稳定性和可靠性。所有这些结果表明BZY材料以及用于PCEC应用的Ni - BCZY电极支撑管状结构具有出色的稳定性。
