In recent years, many researchers have been interested in studying direct carbon-solid oxide fuel cells (DC-SOFCs) because of their simple structure and the highly efficient method for converting the chemical energy contained in waste, biomass, and coal into electricity. Here, an excellent material consisting of yttrium-doped strontium titanate with in situ Cu exsolution is investigated as a DC-SOFC anode. The B-site deficiency formed by a Cu exsolution can increase the concentration of oxygen vacancies, which further improve the oxygen ion ionic conductivity of the materials. At the same time, the Cu nanoparticles exsolved on the surface of the anode can promote the catalytic activity of the electrochemical oxidation of carbon and CO fuels. Then, the cell using Y_0.08Sr_0.92Ti_0.9Cu_0.1 as the anode exhibits an excellent electrochemical performance at 800 °C, with a maximum power density of 366 mW cm^–2. Therefore, Y_0.08Sr_0.92Ti_0.9Cu_0.1 is an excellent anode candidate for DC-SOFCs.

中文翻译：

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通过原位Cu萃取提高直接碳固体氧化物燃料电池的Y _0.08 Sr _0.92 TiO _3−δ阳极的催化活性

近年来，许多研究人员对直接碳-固体氧化物燃料电池（DC-SOFC）感兴趣，这是因为它们的结构简单，并且将废物，生物质和煤中的化学能转化为电能的高效方法。在此，研究了由钇掺杂钛酸锶和原位Cu脱出物组成的优良材料作为DC-SOFC阳极。由铜的浸出形成的B位缺陷可以增加氧空位的浓度，这进一步改善了材料的氧离子电导率。同时，溶解在阳极表面上的Cu纳米粒子可以促进碳和CO燃料电化学氧化的催化活性。然后，使用Y _0.08 Sr _0.92 Ti的电池_0.9 Cu _0.1作为阳极在800°C时表现出出色的电化学性能，最大功率密度为366 mW cm ^–2。因此，Y _0.08 Sr _0.92 Ti _0.9 Cu _0.1是用于DC-SOFC的极好的阳极候选材料。