Electrochemical Performance and Microstructural Characterization of Solid Oxide Electrolysis Cells
文献类型：会议论文
| 作者 | Zhu, Jianxin; Yu, Bo |
| 出版日期 | 2011 |
| 会议名称 | International Conference on Advanced Engineering Materials and Technology (AEMT2011)International Conference on Civil Engineering and Building Materials (CEBM 2011) |
| 会议日期 | JUL 29-31, 2011JUL 29-31, 2011 |
| 会议地点 | Sanya, PEOPLES R CHINAKunming, PEOPLES R CHINA |
| 关键词 | Solid oxide electrolysis cell electrochemical performance Ni oxidation hydrogen electrode microstructure |
| 英文摘要 | High temperature steam electrolysis (HTSE) through solid oxide electrolysis cells (SOEC), a promising high-efficiency and zero-emission way to large-scale hydrogen production, has been received increasingly international interest. The hydrogen production efficiency of HTSE is more than 50%. In this paper, the electrochemical performance and microstructure change of single button cells operating in both fuel cell (SOFC) and electrolysis modes (SOEC) were studied at 850 degrees C. Also, the degradation mechanisms of hydrogen electrodes were investigated. The results showed that OCV decreased from 0.944 V to 0.819 V when the steam content increased from 20% to 80%. The voltage began to increase rapidly at relatively higher current density for lower steam content because of steam starvation; however, steam starvation did not occur at higher steam content. The ASR data decreased from 1.68 to 0.645 Omega cm(2) with the increase of steam contents, while steam content had little effect on ASR data in SOFC mode. The polarization loss of the single cell was higher in electrolysis mode than that in fuel cell mode. The microstructure of the hydrogen electrode changed obviously after electrolysis process. Furthermore, the performance degraded at high steam partial pressure due to the oxidation of Ni grains at the interface of hydrogen electrode. |
| ISBN号 | 1022-6680 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24622]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Zhu, Jianxin,Yu, Bo. Electrochemical Performance and Microstructural Characterization of Solid Oxide Electrolysis Cells[C]. 见:International Conference on Advanced Engineering Materials and Technology (AEMT2011)International Conference on Civil Engineering and Building Materials (CEBM 2011). Sanya, PEOPLES R CHINAKunming, PEOPLES R CHINA. JUL 29-31, 2011JUL 29-31, 2011. |
入库方式： OAI收割
来源：生态环境研究中心
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