From water reduction to oxidation: Janus Co-Ni-P nanowires as high-efficiency and ultrastable electrocatalysts for over 3000 h water splitting
文献类型：期刊论文
| 作者 | Li, Wei1; Gao, Xuefei2; Wang, Xiaoguang1; Xiong, Dehua1; Huang, Pei-Pei2; Song, Wei-Guo2; Bao, Xiaoqing1; Liu, Lifeng1 |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2016-10-31 |
| 卷号 | 330页码:156-166 |
| 关键词 | Co-Ni-P nanowire Water splitting Oxygen evolution Hydrogen evolution Bifunctional electrocatalyst |
| 英文摘要 | Vertically-aligned cobalt nickel phosphide nanowires (Co-Ni-P NWs) are synthesized on Ni foam by phosphorizing cobalt carbonate hydroxide precursor NWs in red phosphorous vapor at an elevated temperature. The as-fabricated self-supported integrated electrode (Ni@Co-Ni-P) exhibits outstanding electrocatalytic activity for the hydrogen evolution reaction (HER) in alkaline solution, delivering a cathodic current density of 100 mA cm(-2) at a small overpotential of 137 mV and a Tafel slope of 65.1 mV dec(-1). Furthermore, the electrode shows remarkable catalytic performance towards the oxygen evolution reaction (OER), affording an anodic current density of 90.2 mA cm(-2) at an overpotential of 350 mV, superior to many other transition metal based OER catalysts. Given the well-defined bifunctionality, an alkaline electrolyzer is assembled using two symmetrical Ni@Co-Ni-P as the cathode and anode, respectively, which demonstrates outstanding catalytic performance for sustained water splitting at varying current densities from 10 to 240 mA cm(-2). Significantly, the Ni@Co-Ni-P electrolyzer is able to operate for 3175 h (ca. 132 days) without degradation at an industry-relevant current density of 100 mA cm(-2), leading to exceptionally high H-2 production rate of 311 mmol h(-1) catalyst cm(-2) with an energy efficiency of 76% at ca. 1.9 V. (C) 2016 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/35472]  |
| 专题 | 化学研究所_分子纳米结构与纳米技术实验室 |
| 作者单位 | 1.Int Iberian Nanotechnol Lab INL, Av Mestre Jose Veiga, P-4715330 Braga, Portugal 2.Chinese Acad Sci, Inst Chem, Key Lab Mol Nanostruct & Nanotechnol, Beijing Natl Lab Mol Sci, 2 North First St, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Wei,Gao, Xuefei,Wang, Xiaoguang,et al. From water reduction to oxidation: Janus Co-Ni-P nanowires as high-efficiency and ultrastable electrocatalysts for over 3000 h water splitting[J]. JOURNAL OF POWER SOURCES,2016,330:156-166. |
| APA | Li, Wei.,Gao, Xuefei.,Wang, Xiaoguang.,Xiong, Dehua.,Huang, Pei-Pei.,...&Liu, Lifeng.(2016).From water reduction to oxidation: Janus Co-Ni-P nanowires as high-efficiency and ultrastable electrocatalysts for over 3000 h water splitting.JOURNAL OF POWER SOURCES,330,156-166. |
| MLA | Li, Wei,et al."From water reduction to oxidation: Janus Co-Ni-P nanowires as high-efficiency and ultrastable electrocatalysts for over 3000 h water splitting".JOURNAL OF POWER SOURCES 330(2016):156-166. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。