Novel high ionic conductivity electrolyte membrane based on semiconductor La0.65Sr0.3Ce0.05Cr0.5Fe0.5O3-? for low-temperature solid oxide fuel cells
By Meng, Yuanjing; Wang, Xunying; Zhang, Wei; Xia, Chen; Liu, Ya-nan; Yuan, Menghui; Zhu, Bin; Ji, Yuan
Published in Journal of Power Sources
2019
Abstract
The p-type semiconductor La0.65Sr0.3Ce0.05Cr0.5Fe0.5O3-? (CLSCrF) is for the first time composited with the ionic conductor Ce0.8Sm0.2O2-? (SDC) to prepare high ionic conductivity electrolyte membranes for low-temperature solid oxide fuel cells (LT-SOFCs). Experimental results illuminate that the introduction of moderate semiconductor into ionic membrane can improve membrane's ionic conductivity, reduce cell's polarization resistance and accelerate the electrode reaction in cathode zone. With 30 wt% CLSCrF incorporated into the SDC membrane, the cell delivers a maximum power density of 837 mW cm?2 at 550
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