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<p>The Mn-doped molybdenum disulfide was successfully synthesized via one-pot hydrother- mal method. Crystal structure and morphological features were evaluated using various struc- tural techniques. The doped MoS<sub>2</sub>, when evaluated as electro-catalyst for the hydrogen evo- lution reaction (HER), exhibited improved catalytic activity and good stability for the HER in acidic medium with lower overpotential (approximately − 0.16&#xa0;V) and lower Tafel slope (85 mV/dec) as compared with undoped MoS<sub>2</sub> which exhibited a Tafel slope of 236 mV/dec. Detailed analysis indicated that the improved HER performance of the Mn-doped catalyst can be ascribed to increased electrochemical active surface area, and increased conductivity generated by Mn ions doping into the MoS<sub>2</sub> lattice with a fraction of Mo ions replacement. These results verify the facilitation effect of Mn-doping on HER activities and justify the potential use of these doped electrocatalysts as a promising alternative to noble metal catalysts in HER.</p>

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Improved hydrogen evolution reaction using Mn doped MoS2

  • 期刊论文

  • 发表日期：

    2026年3月18日

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  • Sandeep Sharma,
  • Sunil Singh Kushvaha,
  • Kuldeep Kumar,
  • Nitesh Dogra

摘要

The Mn-doped molybdenum disulfide was successfully synthesized via one-pot hydrother- mal method. Crystal structure and morphological features were evaluated using various struc- tural techniques. The doped MoS2, when evaluated as electro-catalyst for the hydrogen evo- lution reaction (HER), exhibited improved catalytic activity and good stability for the HER in acidic medium with lower overpotential (approximately − 0.16 V) and lower Tafel slope (85 mV/dec) as compared with undoped MoS2 which exhibited a Tafel slope of 236 mV/dec. Detailed analysis indicated that the improved HER performance of the Mn-doped catalyst can be ascribed to increased electrochemical active surface area, and increased conductivity generated by Mn ions doping into the MoS2 lattice with a fraction of Mo ions replacement. These results verify the facilitation effect of Mn-doping on HER activities and justify the potential use of these doped electrocatalysts as a promising alternative to noble metal catalysts in HER.