YSZ electrolyte support with novel symmetric structure by phase inversion process for solid oxide fuel cells
YSZ electrolyte support with novel symmetric structure by phase inversion process for solid oxide fuel cells
复制标题
用于固体氧化物燃料电池的相转化过程具有新颖对称结构的YSZ电解质载体
DOI：
10.1016/j.enconman.2018.09.051
复制
发表时间：
2018
影响因子：
10.4
通讯作者：
Guo Lucun
中科院分区：
文献类型：
--
作者：
Gu Yiheng;Zhang Yanli;Ge Lin;Zheng Yifeng;Chen Han;Guo Lucun
以钇稳定氧化锆（YSZ）电解质和PrBaMn2O5+δ(PBMO)电极为电极，采用相转化和渗透法制备了对称型固体氧化物燃料电池。通过相转化和滴涂技术，获得了由两个多孔骨架和一个薄致密层组成的对称电解质载体。将PBMO催化剂渗透到骨架的指状孔中作为电极。扫描电镜结果表明，该电池具有多孔对称结构，纳米PBMO催化剂分布在指状微通道中。在800 °C温度下，该电池的阳极极化电阻降低了46%，阴极极化电阻降低了39%。在800 °C的h2和ch4燃料气体中，功率输出提高了100%。这些结果表明，优化电解质支撑的微观结构是增加sofc活性表面积和进一步提高电池性能的有希望的方法。
A symmetric solid oxide fuel cell based on yttrium stabilized zirconia (YSZ) electrolyte and PrBaMn2O5+δ(PBMO) electrode was developed by phase inversion and infiltration methods. Symmetric electrolyte support composed of two porous backbones and a thin dense layer were obtained by phase inversion and drop-coating techniques. PBMO catalysts were infiltrated into the finger-like pores of the backbone to serve as electrodes. Scanning electron microscopy results show that the cell has a porous symmetric structure with nanosized PBMO catalysts distributed in finger-like microchannels. With this symmetric structure, the anode polarization resistance for the cell decreased by 46% and the cathode polarization resistance decreased by 39% at 800 °C. The power outputs were improved by 100% in H2and CH4fuel gas at 800 °C. These results imply that optimizing the microstructure of the electrolyte support is a promising approach to increase active surface areas and further improve the cell performance for SOFCs.