Cyclic polarization enhances the operating stability of La0.57Sr0.38Co0.18Fe0.72Nb0.1O3-? oxygen electrode of reversible solid oxide cells
By He, Zelong; Zhang, Lan; He, Shuai; Ai, Na; Chen, Kongfa; Shao, Yanqun; Jiang, San Ping
Published in Journal of Power Sources
2018
Abstract
Reversing the direction of polarization current is essential for reversible solid oxide cells technologies, but its effect on cobaltite based perovskite oxygen electrodes is largely unknown. Herein, we report the operating stability and microstructure at the electrode/electrolyte interface of La0.57Sr0.38Co0.18Fe0.72Nb0.1O3-? (LSCFN) oxygen electrodes assembled on barrier-layer-free Y2O3ZrO2 electrolyte under cyclic anodic/cathodic polarization mode at 0.5 A cm?2 and 750