A novel composite cathode Er0.4Bi1.6O3-Pr0.5Ba0.5MnO3-delta for ceria-bismuth bilayer electrolyte high performance low temperature solid oxide fuel cells

Hou, Jie; Bi, Lei; Qian, Jing; Gong, Zheng; Zhu, Zhiwen; Liu, Wei

A novel composite cathode Er0.4Bi1.6O3-Pr0.5Ba0.5MnO3-delta for ceria-bismuth bilayer electrolyte high performance low temperature solid oxide fuel cells

Type

Article

Authors

Hou, Jie
Bi, Lei
Qian, Jing
Gong, Zheng
Zhu, Zhiwen
Liu, Wei

KAUST Department

Physical Science and Engineering (PSE) Division

Date

2016

Submitted Date

2015-08-20

Abstract

A novel composite cathode consisting of A-site disordered Pr0.5Ba0.5MnO3-δ (PBM) and Er0.4Bi1.6O3 (ESB) is developed for solid oxide fuel cells (SOFCs) with ceria-bismuth bilayer electrolyte. Based on Sm0.075Nd0.075Ce0.85O2-δ|ESB (SNDC|ESB) bilayer structured film, the single cell NiO-SNDC|SNDC|ESB|ESB-PBM achieves an encouraging performance with the maximum power density (MPD) of 994 mW cm-2 and an interfacial polarization resistance (Rp) of 0.027 Ω cm2 at 650 °C. Although a possible reaction between ESB and PBM has been identified in the cathode, the ascendant electrochemical performance including the very high fuel cell performance and Rp obtained here can demonstrate that the novel cobalt-free composite cathode ESB-PBM is a preferable alternative for ceria-bismuth bilayer electrolyte high performance low temperature SOFCs (HPLT-SOFCs) and the interfacial reaction in the cathode seems not to be detrimental to the electrochemical performance.

Citation

Hou, J., Bi, L., Qian, J., Gong, Z., Zhu, Z., & Liu, W. (2016). A novel composite cathode Er0.4Bi1.6O3–Pr0.5Ba0.5MnO3−δ for ceria-bismuth bilayer electrolyte high performance low temperature solid oxide fuel cells. Journal of Power Sources, 301, 306–311. doi:10.1016/j.jpowsour.2015.10.018

Acknowledgements

This work was supported by Ministry of Science and Technology of China (Grant No: 2012CB215403). The project was also supported by the National Science Foundations of China (Grant nos: 51472228 and 51408582).