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

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

韩嘉琦^{1, 2,},
吴红军^1, ,

1.
中国石油石油化工研究院大庆化工研究中心, 黑龙江大庆 163714
2.
东北石油大学化学化工学院, 黑龙江大庆 163714

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:
E-mail: hjq459@petrochina.com.cn

中图分类号: TQ151.1
计量
- 文章访问数: 415
- HTML全文浏览量: 283
- PDF下载量: 48
- 被引次数: 0
出版历程
- 收稿日期: 2022-10-25
- 修回日期: 2022-11-22
- 录用日期: 2022-12-05
- 网络出版日期: 2022-12-26
- 刊出日期: 2023-10-10

Preparation and characterization of Ni modified MoS₂ for electrocatalytic hydrogen evolution

HAN Jia-qi^{1, 2
,},
WU Hong-jun^{1
, ,}

1.
Daqing Pretrochemical Research Center, Pretrochemical Research Institute of Petro China, Daqing 163714, China
2.
College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing 163714, China

摘要

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。本研究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。当基准电流密度为10 mA/cm²时，240 ℃下制得的20Ni@MoS₂过电位仅为190 mV，塔菲尔斜率为162 mV/dec，优于单一的MoS₂催化材料。
- 一步溶剂热法 /
- 原子改性 /
- 二硫化钼 /
- 电催化析氢
Abstract: Developing highly active and low cost hydrogen evolution electrocatalysts is an imminent task to improve the efficiency of water electrolysis hydrogen production, achieve large-scale hydrogen production, and promote the development and utilization of hydrogen energy. Molybdenum disulfide (MoS₂) has shown a certain potential in the field of hydrogen evolution catalysis, and its modification to improve the catalytic activity and replace the platinum-based catalyst has become a research hotspot in recent years. A simple one-step solvothermal method was used to successfully synthesize a Ni-doped electrocatalytic hydrogen evolution (HER) catalyst Ni@MoS₂, which had excellent electrocatalytic hydrogen evolution activity and good stability. The 20Ni@MoS₂ as prepared at 240 ℃ exhibited better HER performance with a low overpotential of 190 mV at 10 mA/cm² and Tafel slope of 162 mV/dec in acidic medium.
- one-pot solvothermal synthesis /
- atom doping /
- molybdenum disulfide /
- electrocatalytic hydrogen evolution

HTML全文

FIG. 2705. FIG. 2705.

FIG. 2705. FIG. 2705.

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图 1 （a）不同Ni掺杂量的MoS₂的XRD谱图，（b）40Ni@MoS₂的XRD谱图

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

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

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

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图 3 MoS₂和20Ni@MoS₂的Raman谱图

Figure 3 Raman images of MoS₂和20Ni@MoS₂

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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

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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

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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

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图 7 20Ni@MoS₂和MoS₂的电化学阻抗谱

Figure 7 EIS of 20Ni@MoS₂ and MoS₂

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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

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图 9 20Ni@MoS₂的稳定性测试

Figure 9 Stability test of 20Ni@MoS₂

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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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