Effect of NiO/YSZ cathode support pore structure on CO2 electrolysis via solid oxide electrolysis cells
MetadataShow full item record
Gas diffusion within supporting cathodes of solid oxide electrolysis cells (SOECs) plays an important role in CO2electrolysis process. This study has investigated the effect of cathode pore structure on gas diffusion during CO2electrolysis. The cathode pore structure was adjusted by applying the different amounts of pore former during cathode preparation. The more pore former added produced the higher porosity of cathode and the higher limiting current density. High limiting current densities are beneficial to diminish or even eliminate gas diffusion limitation in practical applications, where the electrolysis is expected to be operated at low CO2concentrations to increase CO2conversion. An advanced impedance spectroscopy study is performed to confirm the limiting current density measured according to current-voltage curves. It was revealed that CO2electrolysis performance is greatly affected by gas diffusion, which is determined by the employed cathode pore structure.
Showing items related by title, author, creator and subject.
Dong, D.; Shao, X.; Hu, X.; Chen, K.; Xie, K.; Yu, L.; Ye, Z.; Yang, P.; Parkinson, G.; Li, Chun-Zhu (2016)Gas diffusion limitation within Ni/YSZ cathode supports of solid oxide electrolysis cells (SOECs) during steam electrolysis has been reported in previous studies. In this study, a microchanneled cathode support has been ...
Hierarchically ordered porous Ni-based cathode-supported solid oxide electrolysis cells for stable CO2 electrolysis without safe gasDong, Dehua; Xu, S.; Shao, Xin; Hucker, L.; Marin, J.; Pham, T.; Xie, K.; Ye, Z.; Yang, P.; Yu, L.; Parkinson, G.; Li, C. (2017)This study reported a hierarchically ordered porous Ni-based cathode of a solid oxide electrolysis cell to realise stable CO 2 electrolysis without the need of safe gas. The Ni/(Y 2 O 3 ) 0.08 (ZrO 2 ) 0.92 (YSZ) cathode ...
Electrochemical conversion of CO<inf>2</inf>over microchanneled cathode supports of solid oxide electrolysis cellsYu, Libo; Wang, J.; Ye, Z.; Hu, Xun; Buckley, Craig; Marnellos, G.; Dong, Dehua (2018)© 2018 Published by Elsevier Ltd. This study has demonstrated that microchanneled cathode supports of solid oxide electrolysis cells were developed to improve CO 2 electrolysis performance. Through numerous channels ...