A cofuel channel microtubular solid oxide fuel/electrolysis cell

Yue Yao, Yue Ma, Chenpeng Wang, Hao Ye, Yinglong Liu, Jiawei Liu, Xiaobo Zhao, Tao Tao, Yingbang Yao, Shengguo Lu, Huazheng Yang and Bo Liang

Applied Energy, 2022, vol. 327, issue C, No S0306261922012673

Abstract: A co-fuel channel microtubular solid oxide fuel/electrolysis cell is successfully fabricated by adding an insulating ceramic connector. The active electrode area of both of the abovementioned cells is approximately 10.73 cm2. Hydrogen-steam mixtures act as either reactants or products in the ceramic tubes. A ring-like anodic current collector is located in the middle of the anode, while silver paste is coated on the cathode as a cathodic current collector. When operating the cells at 750 ℃, 0.6 A cm−2 at 0.6 V and 1.0 A cm−2 at 1.7 V are achieved for the SOFC and SOEC, respectively. By using the co-fuel channel, the power generation of the SOFC is 3.9 W, while the simultaneous power consumption of the SOEC is 18.2 W. After 11 h of operation, no microcracks were observed, and the anode-electrolyte interface structure exhibited no Ni agglomeration or active phase loss.

Keywords: microtubular SOC; Co-fuel channel; Interface; Mutual conversion (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1016/j.apenergy.2022.120010

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