ZHU Shiyue ¹, WU Liang ¹, XIA Changrong ², LU Xiaoyong ¹, CHEN Yonghong ¹, TIAN Dong ¹
(1. Anhui Province Key Laboratory of Low Temperature Co-fired Materials, Department of Chemistry and Engineering,  uainan Normal University, Huainan 232038, Anhui, China;2. Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China)

Abstract: Reversible solid oxide cell (rSOC) with CO₂ are effective energy conversion devices for energy storage and "carbon neutrality". The traditional Ni-based fuel electrode is limited by its stability in CO₂. In recent years, perovskite has been widely used as electrode to replace cermet in rSOC, because of its high electronic conductivity, ionic conductivity and catalytic activity. In addition, perovskite and electrolyte materials with high ionic conductivity are combined, while the three-phase-boundary heterostructured composites have a synergistic optimization effect on the electrochemical reaction. Fuel electrode (La_0.75Sr_0.25)_0.95Cr_0.5Mn_0.5O_3−δ (LSCM) which has promising redox stability was applied and the LSCM-SDC nano-nterface was constructed by impregnating Ce_0.8Sm_0.2O_2−δ (SDC). It is found that the nanocomposite electrode has higher surface exchange rate and electrochemical reactivity than pure LSCM electrode in both cell and electrolysis modes.
Key words: carbon neutrality; reversible solid oxide cells; LSCM; nanocomposite; infiltrating