一步电沉积铈掺杂氢氧化镍纳米片用于高效析氧

Fang Gang, Cai Jinhua, Huang Zhipeng, Zhang Chi

School of Chemistry and Chemical Engineering, Jiangsu University Zhenjiang 212013 P. R. China.

College of Chemistry & Chemical Engineering, Jinggangshan University Jian Jiangxi Province 343009 P. R. China.

RSC Adv. 2019 Jun 6;9(31):17891-17896. doi: 10.1039/c9ra02682g. eCollection 2019 Jun 4.

Efficient electrocatalysts catalyzing oxygen evolution reaction (OER) in alkaline media is highly desirable for large-scale hydrogen production from water splitting. Here we report the direct electrodeposition of cerium-doped nickel hydroxide nanosheets on carbon fiber paper and its prominent performance in catalyzing the OER. The composite generates a current density of 100 mA cm at an overpotential of 320 mV, rivaling the performance of most reported OER catalysts and commercially available RuO. X-ray photoelectron spectroscopy analysis shows strong electronic interaction between Ni(OH) and CeO, making a great contribution to the OER enhancement.

在碱性介质中高效催化析氧反应（OER）的电催化剂对于通过水分解大规模制氢极为重要。在此，我们报道了铈掺杂氢氧化镍纳米片在碳纤维纸上的直接电沉积及其在催化OER方面的卓越性能。该复合材料在320 mV的过电位下产生100 mA cm的电流密度，可与大多数已报道的OER催化剂以及市售RuO的性能相媲美。X射线光电子能谱分析表明Ni(OH)与CeO之间存在强烈的电子相互作用，这对OER性能的提升有很大贡献。