Partial-Single-Atom, Partial-Nanoparticle Composites Enhance Water Dissociation for Hydrogen Evolution
文献类型：期刊论文
| 作者 | Hu, C; Song, EH; Wang, MY; Chen, W; Huang, FQ; Feng, ZX; Liu, JJ; Wang, JC |
| 刊名 | ADVANCED SCIENCE
 |
| 出版日期 | 2020-11-28 |
| DOI | 10.1002/advs.202001881 |
| 文献子类 | Article; Early Access |
| 英文摘要 | The development of an efficient electrocatalyst toward the hydrogen evolution reaction (HER) is of significant importance in transforming renewable electricity to pure and clean hydrogen by water splitting. However, the construction of an active electrocatalyst with multiple sites that can promote the dissociation of water molecules still remains a great challenge. Herein, a partial-single-atom, partial-nanoparticle composite consisting of nanosized ruthenium (Ru) nanoparticles (NPs) and individual Ru atoms as an energy-efficient HER catalyst in alkaline medium is reported. The formation of this unique composite mainly results from the dispersion of Ru NPs to small-size NPs and single atoms (SAs) on the Fe/N codoped carbon (Fe-N-C) substrate due to the thermodynamic stability. The optimal catalyst exhibits an outstanding HER activity with an ultralow overpotential (9 mV) at 10 mA cm(-2) (eta(10)), a high turnover frequency (8.9 H-2 s(-1) at 50 mV overpotential), and nearly 100% Faraday efficiency, outperforming the state-of-the-art commercial Pt/C and other reported HER electrocatalysts in alkaline condition. Both experimental and theoretical calculations reveal that the coexistence of Ru NPs and SAs can improve the hydride coupling and water dissociation kinetics, thus synergistically enhancing alkaline hydrogen evolution performance. |
| WOS关键词 | NITROGEN-DOPED GRAPHENE ; OXYGEN REDUCTION ; CATALYTIC SITES ; CARBON NITRIDE ; EFFICIENT ; PH ; ELECTROCATALYST ; PLATINUM ; PERFORMANCE ; KINETICS |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| 出版者 | WILEY |
| 源URL | [http://ir.sic.ac.cn/handle/331005/27612]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Hu, C,Song, EH,Wang, MY,et al. Partial-Single-Atom, Partial-Nanoparticle Composites Enhance Water Dissociation for Hydrogen Evolution[J]. ADVANCED SCIENCE,2020. |
| APA | Hu, C.,Song, EH.,Wang, MY.,Chen, W.,Huang, FQ.,...&Wang, JC.(2020).Partial-Single-Atom, Partial-Nanoparticle Composites Enhance Water Dissociation for Hydrogen Evolution.ADVANCED SCIENCE. |
| MLA | Hu, C,et al."Partial-Single-Atom, Partial-Nanoparticle Composites Enhance Water Dissociation for Hydrogen Evolution".ADVANCED SCIENCE (2020). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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