Fluff spherical Co–Ni3S2/NF for enhanced hydrogen evolution
文献类型：期刊论文
| 作者 | Sun K.; Qiao F.; Yang J. ; Li H.; Cui Y.; Liu P.F.
|
| 刊名 | International Journal of Hydrogen Energy
 |
| 出版日期 | 2022 |
| 卷号 | 47期号:65页码:27986-27995 |
| ISSN号 | 03603199 |
| DOI | 10.1016/j.ijhydene.2022.06.143 |
| 文献子类 | Article |
| 英文摘要 | Ni3S2 is a kind of HER catalyst electrode with high efficiency and easy preparation. However, due to the weak electrochemical adsorption capacity of water molecules at the Ni site, it is not conducive to the dissociation of water molecules. At the same time, strong sulfur-hydrogen bond is easily formed at the S site, which greatly hinders the desorption and bonding of hydrogen atom to produce hydrogen. Hydrogen evolution performance of Ni3S2 in alkaline media needs to be improved. In this paper, fluff spherical Co–Ni3S2 was grown in situ on nickel foam by two-step hydrothermal method successfully. By doping cobalt ions, the strong interaction of S–H bond on Ni3S2 surface was weakened, the adsorption and dissociation of water molecules were promoted, and the catalyst was exposed to more reactive centers, so as to improve the hydrogen evolution performance of cathodic reduction reaction. Electrochemical test and Transient Photovoltage (TPV) tests show that Co–Ni3S2 has fast reaction kinetics and high electron transfer rate, especially it only needs 148 mV low overpotential to reach 10 mA cm−2 in 1.0 M KOH alkaline electrolyte, which is better than Ni3S2/NF (250 mV). In addition, Co–Ni3S2 also has excellent electrochemical stability. Density functional theory (DFT) calculations confirm that the optimized adsorption energy enables the catalyst to exhibit excellent HER activity. This work provides useful guidance to construction of effective nickel related HER catalysts. © 2022 Hydrogen Energy Publications LLC |
| 语种 | 英语 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299569]  |
| 专题 | 高能物理研究所_东莞分部 高能物理研究所_多学科研究中心 |
| 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 | Sun K.,Qiao F.,Yang J.,et al. Fluff spherical Co–Ni3S2/NF for enhanced hydrogen evolution[J]. International Journal of Hydrogen Energy,2022,47(65):27986-27995. |
| APA | Sun K.,Qiao F.,Yang J.,Li H.,Cui Y.,&Liu P.F..(2022).Fluff spherical Co–Ni3S2/NF for enhanced hydrogen evolution.International Journal of Hydrogen Energy,47(65),27986-27995. |
| MLA | Sun K.,et al."Fluff spherical Co–Ni3S2/NF for enhanced hydrogen evolution".International Journal of Hydrogen Energy 47.65(2022):27986-27995. |
入库方式： OAI收割
来源：高能物理研究所
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