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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Chem. | doi: 10.3389/fchem.2019.00716

Synthesis of Mo2C and W2C nanoparticles electrocatalysts for the efficient hydrogen evolution reaction in alkali and acid electrolytes

 Jongwan Jung1*,  Sajjad Hussain1,  Dhanasekaran Vikraman2,  Asad Feroze1, Wooseok Song3, Ki-Seok An3, Hyun-Seok Kim2 and Seung-Hyun Chun1
  • 1Sejong University, South Korea
  • 2Dongguk University Seoul, South Korea
  • 3Korea Research Institute of Chemical Technology (KRICT), South Korea

The development of low-cost, high efficiency, and sustainable hydrogen production electrocatalyst based on non-precious-metal remains a great challenge. Herein, we demonstrate a facile and cost effective chemical reduction method to synthesize the molybdenum carbide (Mo2C) and tungsten carbide (W2C) nanoparticles as efficient electrocatalysts in the alkali and acid electrolytes for hydrogen evolution reactions (HER). Mo2C exhibits an outstanding catalytic activity with a small overpotential of -134 mV in acid media and -116 mV in alkaline media, while W2C nanoparticles requires an overpotential of -173 mV in acid media and -130 mV in alkaline solution to achieve a current density of 10 mA cm-2. The observed results proved the capablilty of high and low pH active electrocatalysts of Mo2C and W2C nanoparticles to be an inevitable system for hydrogen production through the HER water electrolysis.

Keywords: Mo2C, W2C, nanoparticle, HER, electrocatalyst

Received: 14 Aug 2019; Accepted: 10 Oct 2019.

Copyright: © 2019 Jung, Hussain, Vikraman, Feroze, Song, An, Kim and Chun. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Prof. Jongwan Jung, Sejong University, Seoul, South Korea, jwjung@sejong.ac.kr