期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 1, 页码 362-370出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b12189
关键词
OER; bimetal-organic frameworks; phosphides; water splitting; HER
资金
- Natural Science Foundation of China (NNSFC) [21673105, 21503102]
- Fundamental Research Funds for the Central University [lzujbky-2016-K09, lzujbky-2015-274]
- Science and Technology Program of Gansu Province of China [145RJZA176]
- Open Project of Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education [LZUMMM2016008]
The electrochemical splitting of water, as an efficient and largescale method to produce H, is still hindered by the sluggish kinetics of the oxygen evolution reaction (OER) at the anode. Considering the synergetic effect of the different metal sites with coordination on the surface of electrocatalysts, the hybrids of Co/Fe phosphides (denoted as Co-Fe-P) is prepared by one-step phosphorization of CoFe metal-organic frameworks for the first time as highly efficient electrocatalysts for OER. Benefiting from the synergistic effect of Co and Fe, the high valence of Co ions induced by strongly electronegative P and N and the large electrochemical active surface area (ECSA) originated from exposed nanowires on the surface ofCo/Fe phosphides, the resultant Co-Fe-P-1.7 exhibits remarkable electrocatalytic performances for OER in 1.0 M KOH, affording an overpotential as low as 244 mV at a current density of 10 mA/cm(2), a small Tafel slope of 58 mV/dec, and good stability, which is superior to that of the state-of-the-art OER electrocatalysts. In addition, the two-electrode cell with Co-Fe-P-1.7 modified Ni foam as anode and cathode in an alkaline electrolyte, respectively, exhibits the decomposition potential of ca. 1.60 V at a current density of 10 mA/cm(2) and excellent stability.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据