Two-dimensional Co3W3C nanosheets on graphene nanocomposition: An Pt-like electrocatalyst toward hydrogen evolution reaction in wide pH range
文献类型：期刊论文
| ; | |
| 作者 | He CY(何春勇) ; Tao JZ(陶举洲)
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| 刊名 | MATERIALS TODAY ENERGY
 ; MATERIALS TODAY ENERGY
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| 出版日期 | 2018 ; 2018 |
| 卷号 | 8页码:65-72 |
| DOI | 10.1016/j.mtener.2017.12.009 ; 10.1016/j.mtener.2017.12.009 |
| 文献子类 | Article ; Article |
| 英文摘要 | It is still a great challenge to replace Pt by non-precious metal electrocatalysts toward hydrogen evolution reaction (HER) due to their sluggish kinetics and poor electrochemical durability. Here, we reported a novel two-dimensional Co3W3C nanosheets on graphene nanocomposition (Co3W3C NSs/G) that synthesized by a simple two-step method. The overpotential of Co3W3C NSs/G at 10 mA cm−2 (η10) is just 64 mV in 0.5 M H2SO4 solution, which is very close to Pt/C (37 mV). The Tafel slope of Co3W3C NSs/G is 35 mV dec−1, which is also very close to Pt/C (30 mV dec−1). The exchange current density (j0) of Co3W3C NSs/G is 0.232 mA cm−2, which is almost as high as Pt/C (0.279 mA cm−2). Overall, the Co3W3C NSs/G exhibits Pt-like catalytic activity toward HER. Furthermore, the Co3W3C NSs/G shows outstanding HER activities and extreme high electrochemical durability in a wide pH range. The density functional theoretical (DFT) calculations show that the Gibbs free energy of hydrogen bonding (ΔGH*, * denotes an adsorption site) of the Co3W3C is −0.15 eV, which is also very close to Pt (−0.09 eV). © 2018 Elsevier Ltd; It is still a great challenge to replace Pt by non-precious metal electrocatalysts toward hydrogen evolution reaction (HER) due to their sluggish kinetics and poor electrochemical durability. Here, we reported a novel two-dimensional Co3W3C nanosheets on graphene nanocomposition (Co3W3C NSs/G) that synthesized by a simple two-step method. The overpotential of Co3W3C NSs/G at 10 mA cm−2 (η10) is just 64 mV in 0.5 M H2SO4 solution, which is very close to Pt/C (37 mV). The Tafel slope of Co3W3C NSs/G is 35 mV dec−1, which is also very close to Pt/C (30 mV dec−1). The exchange current density (j0) of Co3W3C NSs/G is 0.232 mA cm−2, which is almost as high as Pt/C (0.279 mA cm−2). Overall, the Co3W3C NSs/G exhibits Pt-like catalytic activity toward HER. Furthermore, the Co3W3C NSs/G shows outstanding HER activities and extreme high electrochemical durability in a wide pH range. The density functional theoretical (DFT) calculations show that the Gibbs free energy of hydrogen bonding (ΔGH*, * denotes an adsorption site) of the Co3W3C is −0.15 eV, which is also very close to Pt (−0.09 eV). © 2018 Elsevier Ltd |
| 电子版国际标准刊号 | 2468-6069 ; 2468-6069 |
| 语种 | 英语 ; 英语 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286659]  |
| 专题 | 高能物理研究所_东莞分部 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | He CY,Tao JZ. Two-dimensional Co3W3C nanosheets on graphene nanocomposition: An Pt-like electrocatalyst toward hydrogen evolution reaction in wide pH range, Two-dimensional Co3W3C nanosheets on graphene nanocomposition: An Pt-like electrocatalyst toward hydrogen evolution reaction in wide pH range[J]. MATERIALS TODAY ENERGY, MATERIALS TODAY ENERGY,2018, 2018,8, 8:65-72, 65-72. |
| APA | 何春勇,&陶举洲.(2018).Two-dimensional Co3W3C nanosheets on graphene nanocomposition: An Pt-like electrocatalyst toward hydrogen evolution reaction in wide pH range.MATERIALS TODAY ENERGY,8,65-72. |
| MLA | 何春勇,et al."Two-dimensional Co3W3C nanosheets on graphene nanocomposition: An Pt-like electrocatalyst toward hydrogen evolution reaction in wide pH range".MATERIALS TODAY ENERGY 8(2018):65-72. |
入库方式： OAI收割
来源：高能物理研究所
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