Hydrothermal Synthesis of Monolithic Co3Se4 Nanowire Electrodes for Oxygen Evolution and Overall Water Splitting with High Efficiency and Extraordinary Catalytic Stability
文献类型：期刊论文
| 作者 | Li, Wei1; Gao, Xuefei2; Xiong, Dehua1; Wei, Fang2; Song, Wei-Guo2; Xu, Junyuan1; Liu, Lifeng1 |
| 刊名 | ADVANCED ENERGY MATERIALS
 |
| 出版日期 | 2017-09-06 |
| 卷号 | 7期号:17 |
| 关键词 | Bifunctional Catalysts Co3se4 Nanowires Electrocatalysis Overall Water Splitting Oxygen Evolution Reaction |
| 英文摘要 | Cobalt selenide has been proposed to be an effective low-cost electrocatalyst toward the oxygen evolution reaction (OER) due to its well-suited electronic configuration. However, pure cobalt selenide has by far still exhibited catalytic activity far below what is expected. Herein, this paper for the first time reports the synthesis of new monoclinic Co3Se4 thin nanowires on cobalt foam (CF) via a facile one-pot hydrothermal process using selenourea. When used to catalyze the OER in basic solution, the conditioned monolithic self-supported Co3Se4/CF electrode shows an exceptionally high catalytic current of 397 mA cm(-2) at a low overpotential (eta) of 320 mV, a small Tafel slope of 44 mV dec(-1), a turnover frequency of 6.44 x 10(-2) s(-1) at eta = 320 mV, and excellent electrocatalytic stability at various current densities. Furthermore, an electrolyzer is assembled using two symmetrical Co3Se4/CF electrodes as anode and cathode, which can deliver 10 and 20 mA cm(-2) at low cell voltages of 1.59 and 1.63 V, respectively. More significantly, the electrolyzer can operate at 10 mA cm(-2) over 3500 h and at 100 mA cm(-2) for at least 2000 h without noticeable degradation, showing extraordinary operational stability. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/39273]  |
| 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, Ave Mestre Jose Veiga, P-4715330 Braga, Portugal 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Wei,Gao, Xuefei,Xiong, Dehua,et al. Hydrothermal Synthesis of Monolithic Co3Se4 Nanowire Electrodes for Oxygen Evolution and Overall Water Splitting with High Efficiency and Extraordinary Catalytic Stability[J]. ADVANCED ENERGY MATERIALS,2017,7(17). |
| APA | Li, Wei.,Gao, Xuefei.,Xiong, Dehua.,Wei, Fang.,Song, Wei-Guo.,...&Liu, Lifeng.(2017).Hydrothermal Synthesis of Monolithic Co3Se4 Nanowire Electrodes for Oxygen Evolution and Overall Water Splitting with High Efficiency and Extraordinary Catalytic Stability.ADVANCED ENERGY MATERIALS,7(17). |
| MLA | Li, Wei,et al."Hydrothermal Synthesis of Monolithic Co3Se4 Nanowire Electrodes for Oxygen Evolution and Overall Water Splitting with High Efficiency and Extraordinary Catalytic Stability".ADVANCED ENERGY MATERIALS 7.17(2017). |
入库方式： OAI收割
来源：化学研究所
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