Key Laboratory of Energy Materials Chemistry, Ministry of Education, Key Laboratory of Advanced Functional Materials, Autonomous Region, Institute of Applied Chemistry , Xinjiang University , Urumqi , Xinjiang 830046 , P. R. China.
Physics and Chemistry Detecting Center , Xinjiang University , Urumqi , Xinjiang 830046 , P. R. China.
ACS Appl Mater Interfaces. 2019 Feb 13;11(6):6431-6441. doi: 10.1021/acsami.8b20736. Epub 2019 Jan 29.
Development of a Pd-based catalyst with highly active and durable properties for formic acid oxidation reaction at the anode remains an important matter of interest in the research community. Herein, we have designed novel coal-based carbon fibers (Coal-CFs) with dicyandiamide (DCD) as nitrogen (N) source, triphenylphosphine (TPP) as phosphorus (P) source dual-doped to support Pd catalysts (Pd/NP-Coal-CFs(DCD/TPP)), which exhibit superior catalytic performance toward formic acid oxidation reaction. Mass activity of formic acid oxidation of Pd/NP-Coal-CFs(DCD/TPP) catalyst is 536.6 mA·mg, which is 2.5 times higher than that of Pd/Coal-CFs catalyst. The higher specific surface areas, exclusive electron transport path, and the high synergistic interaction of N and P are the favorable phenomena for catalytic performance. The addition of coal not only increases the abundant defects sites but also makes the utilization of coal with high added value. This N and P dual-doped catalyst inspires an idea for promoting applications in practical fuel cells.
开发具有高活性和耐久性的 Pd 基催化剂，用于在阳极的甲酸氧化反应，仍然是研究界关注的重要问题。在此，我们设计了新型的含双氰胺（DCD）作为氮（N）源、三苯基膦（TPP）作为磷（P）源的双掺杂煤基碳纤维（Coal-CFs）来支撑 Pd 催化剂（Pd/NP-Coal-CFs(DCD/TPP)），该催化剂对甲酸氧化反应表现出优异的催化性能。Pd/NP-Coal-CFs(DCD/TPP)催化剂的甲酸氧化质量活性为 536.6 mA·mg，是 Pd/Coal-CFs 催化剂的 2.5 倍。更高的比表面积、独特的电子传输路径以及 N 和 P 的高协同相互作用是促进催化性能的有利现象。煤的添加不仅增加了丰富的缺陷位，而且使煤得到了高附加值的利用。这种 N 和 P 双掺杂催化剂为促进在实际燃料电池中的应用提供了思路。
