Selective phosphidation: an effective strategy toward CoP/CeO2 interface engineering for superior alkaline hydrogen evolution electrocatalysis
文献类型：期刊论文
| 作者 | Ge, Ruixiang; Liu, Zhiang; Asiri, Abdullah M.; Chen, Liang; Zhang, Qiuju; Sun, Xuping; Hao, Shuai; Ren, Xiang; Zhang, Rong |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2018 |
| 卷号 | 6期号:5页码:1985-1990 |
| 关键词 | Efficient Electrocatalyst Oxygen Evolution Bifunctional Electrocatalyst Cop Nanocrystals Nanowire Arrays Carbon Cloth Water Catalysts Ph Nanoparticles |
| 英文摘要 | Co phosphides, although highly active for the hydrogen evolution electrocatalysis in acids, still deliver inferior performance in alkalis, limiting their application in alkaline water electrolysis. Building an effective Co phosphide/(hydroxide) oxide interface could be a viable way to improve the hydrogen evolution activity of Co phosphide catalysts under alkaline conditions, which however remains unexplored and challenging. In this communication, we report the facile development of a CoP-CeO2 hybrid nanosheet film on Ti mesh (CoP-CeO2/Ti) from easily made Co3O4-CeO2 via a selective phosphidation strategy. In 1.0 M KOH, such CoP-CeO2/Ti achieves a geometrical catalytic current density of 10 mA cm(-2) at a pretty low overpotential of 43 mV, 27 mV less than that for CoP/Ti. Remarkably, our CoP-CeO2/Ti also shows superior durability over CoP/Ti, suggesting that CeO2 greatly stabilizes the CoP catalyst. Density functional theory calculations demonstrate that CoP-CeO2 possesses a lower water dissociation free energy and a more optimal hydrogen adsorption free energy than CoP. This selective phosphidation strategy is universal in engineering the transition metal phosphide/oxide interface for applications. |
| 学科主题 | Chemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| 公开日期 | 2018-12-04 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/16821]  |
| 专题 | 2018专题 |
| 推荐引用方式 GB/T 7714 | Ge, Ruixiang,Liu, Zhiang,Asiri, Abdullah M.,et al. Selective phosphidation: an effective strategy toward CoP/CeO2 interface engineering for superior alkaline hydrogen evolution electrocatalysis[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(5):1985-1990. |
| APA | Ge, Ruixiang.,Liu, Zhiang.,Asiri, Abdullah M..,Chen, Liang.,Zhang, Qiuju.,...&Zhang, Rong.(2018).Selective phosphidation: an effective strategy toward CoP/CeO2 interface engineering for superior alkaline hydrogen evolution electrocatalysis.JOURNAL OF MATERIALS CHEMISTRY A,6(5),1985-1990. |
| MLA | Ge, Ruixiang,et al."Selective phosphidation: an effective strategy toward CoP/CeO2 interface engineering for superior alkaline hydrogen evolution electrocatalysis".JOURNAL OF MATERIALS CHEMISTRY A 6.5(2018):1985-1990. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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