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Ni改性二硫化钼析氢电催化剂的制备及表征

韩嘉琦 吴红军

韩嘉琦, 吴红军. Ni改性二硫化钼析氢电催化剂的制备及表征[J]. 燃料化学学报. doi: 10.19906/j.cnki.JFCT.2022092
引用本文: 韩嘉琦, 吴红军. Ni改性二硫化钼析氢电催化剂的制备及表征[J]. 燃料化学学报. doi: 10.19906/j.cnki.JFCT.2022092
HAN Jia-qi, WU Hong-jun. Preparation and Characterization of Ni modified MoS2 for Electrocatalytic Hydrogen Evolution[J]. Journal of Fuel Chemistry and Technology. doi: 10.19906/j.cnki.JFCT.2022092
Citation: HAN Jia-qi, WU Hong-jun. Preparation and Characterization of Ni modified MoS2 for Electrocatalytic Hydrogen Evolution[J]. Journal of Fuel Chemistry and Technology. doi: 10.19906/j.cnki.JFCT.2022092

Ni改性二硫化钼析氢电催化剂的制备及表征

doi: 10.19906/j.cnki.JFCT.2022092
详细信息
    作者简介:

    韩嘉琦(1996-),女,硕士,助理工程师,现从事电催化析氢催化剂制备的研究

    通讯作者:

    吴红军,E-mail: hjq459@petrochina.com.cn

  • 中图分类号: TQ151.1

Preparation and Characterization of Ni modified MoS2 for Electrocatalytic Hydrogen Evolution

  • 摘要: 开发高性能低成本的析氢电催化剂有望提升电解水制氢效率,实现大规模产氢,促进氢能的开发及利用迫在眉睫。二硫化钼(MoS2)在析氢催化领域展现出一定潜能,通过对其改性以提高催化活性从而替代铂基催化剂成为近年来的研究热点。本文采用一步溶剂热法合成Ni原子改性的MoS2电催化析氢(HER)催化剂,该催化剂在酸性条件下具有良好的催化活性及优异的稳定性。240 ℃下制得的20Ni@MoS2当基准电流密度为10 mA/cm2时过电位仅为190 mV,塔菲尔斜率为162 mV/dec,远优于单一的MoS2催化材料。
  • 图  1  (a)不同Ni掺杂量的MoS2的XRD衍射图谱;(b)40Ni@MoS2的XRD衍射图谱

    Figure  1  (a) XRD images of MoS2 with different Ni doping concentrations; (b) XRD images of 40Ni@MoS2

    图  2  (a) MoS2的TEM、HRTEM和EDS图像 (b) 20Ni@MoS2的TEM、HRTEM和EDS图像

    Figure  2  (a) TEM、HRTEM and EDS images of MoS2 (b) TEM、HRTEM and EDS images of 20Ni@MoS2

    图  3  MoS2和20Ni@MoS2的Raman谱图

    Figure  3  Raman images of MoS2和20Ni@MoS2

    图  4  (a) 20Ni@MoS2的XPS全谱图;(b) 20Ni@MoS2的XPS Mo 3d谱图;(c) 20Ni@MoS2的XPS S 2p谱图;(d) 20Ni@MoS2的XPS Ni 2p谱图

    Figure  4  (a) XPS images of 20Ni@MoS2 ; (b) XPS spectra of Mo 3d for the 20Ni@MoS2 ; (c) XPS spectra of S 2p for the 20Ni@MoS2 ; (d) XPS spectra of Ni 2p for the 20Ni@MoS2

    图  5  (a) 不同Ni掺杂量的MoS2线性扫描伏安曲线 (b) 20% Pt/C、20Ni@MoS2和MoS2的线性扫描伏安曲线

    Figure  5  (a) Polarization curves of MoS2 with different Ni doping concentrations (b) Polarization curves of 20% Pt/C、20Ni@MoS2 and MoS2

    图  6  20% Pt/C、20Ni@MoS2和MoS2的塔菲尔斜率

    Figure  6  Tafel plots of 20% Pt/C、20Ni@MoS2 and MoS2

    图  7  20Ni@MoS2和MoS2的电化学阻抗谱

    Figure  7  EIS of 20Ni@MoS2 and MoS2

    图  8  MoS2和20Ni@MoS2的双电层电容曲线

    Figure  8  Electric double layer capacitance curve of MoS2 and 20Ni@MoS2

    图  9  20Ni@MoS2的稳定性测试

    Figure  9  Stability test of 20Ni@MoS2

    图  10  (a) 稳定性测试后20Ni@MoS2的XPS Mo 3d谱图;(b) 稳定性测试后20Ni@MoS2的XPS Ni 2p谱图

    Figure  10  (a) XPS spectra in the Mo 3d of the 20Ni@MoS2 after the durability test ; (b) XPS spectra in the Ni 2p of the 20Ni@MoS2 after the durability test

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  • 收稿日期:  2022-10-25
  • 录用日期:  2022-12-05
  • 修回日期:  2022-11-22
  • 网络出版日期:  2022-12-26

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