Porous carbon incorporated Β-Mo2C hollow sphere: An efficient electrocatalyst for hydrogen evolution reaction

Arka Saha; Anirban Paul; Divesh N. Srivastava; Asit B. Panda

doi:10.1016/j.ijhydene.2018.04.051

Porous carbon incorporated Β-Mo₂C hollow sphere: An efficient electrocatalyst for hydrogen evolution reaction

Arka Saha, Anirban Paul, Divesh N. Srivastava, Asit B. Panda

CSIR - Central Salt Marine Chemicals Research Institute

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

Hydrogen is undoubtedly considered as the cleanest energy source and hence the urgency for production of H₂ is a concern to the scientific community. The major bottleneck for electrocatalytic hydrogen production is still exists as the reported catalysts, mainly noble metal based, are extremely costly. Thus the fabrication of cheap and noble metal free electrocatalyst for Hydrogen Evolution Reaction (HER) is still seeking. Here, a simplistic method is developed for the synthesis of carbon assimilated molybdenum carbide (β-Mo₂C) hollow sphere which showed effective electrocatalysis for HER. The synthesis of desired β-Mo₂C–C hollow sphere is based on high temperature carbothermal reduction (800 °C in 10%-H₂/N₂ atmosphere) of carbon incorporated MoO₂ spheres. The synthesized β-Mo₂C with an optimal carbon loading reaches 10 mA/cm⁻² current density at a low overpotential of 146 mV with a small tafel slope of 90 mV dec⁻¹ for the electrochemical hydrogen evolution (HER) in 0.5 M H₂SO₄. The improved catalytic performance, long-term stability make β-Mo₂C–C hollow sphere an auspicious HER electrocatalyst.

Original language	English
Pages (from-to)	21655-21664
Number of pages	10
Journal	International Journal of Hydrogen Energy
DOIs	https://doi.org/10.1016/j.ijhydene.2018.04.051
State	Published - 22 Nov 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 Hydrogen Energy Publications LLC

Funding

CSIR-CSMCRI Communication No.081/2018. Authors like to acknowledge SERB, India (EMR/2014/001219) for financial support. A. Saha, A. Paul acknowledges UGC and CSIR India, for fellowship. The authors acknowledge the “AESDCIF” of CSMCRI for providing instrumentation facilities. Author also acknowledges MNIT Jaipur for XPS analysis. CSIR-CSMCRI Communication No.081/2018. Authors like to acknowledge SERB, India ( EMR/2014/001219 ) for financial support. A. Saha, A. Paul acknowledges UGC and CSIR India, for fellowship. The authors acknowledge the “AESDCIF” of CSMCRI for providing instrumentation facilities. Author also acknowledges MNIT Jaipur for XPS analysis. CSIR-CSMCRI Communication No.081/2018. Authors like to acknowledge SERB, India (EMR/2014/001219) for financial support. A. Saha, A. Paul acknowledges UGC and CSIR India, for fellowship. The authors acknowledge the ?AESDCIF? of CSMCRI for providing instrumentation facilities. Author also acknowledges MNIT Jaipur for XPS analysis. This work was supported by Science and Engineering Research Board , Department of Science and Technology, Government of India [grant numbers EMR/2014/001219 ].

Funders	Funder number
CSIR-CSMCRI	081/2018
Department of Science and Technology, Ministry of Science and Technology, India	EMR/2014/001219
Council of Scientific and Industrial Research, India
University Grants Commission
University Grants Committee
Science and Engineering Research Board
Department of Science and Technology, Government of Kerala
CSIR - Indian Institute of Chemical Biology

Keywords

Electrocatalyst
Hollow sphere
Hydrogen evolution reaction
Tafel slope
β-MoC–C

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2018.04.051

Cite this

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title = "Porous carbon incorporated Β-Mo2C hollow sphere: An efficient electrocatalyst for hydrogen evolution reaction",

abstract = "Hydrogen is undoubtedly considered as the cleanest energy source and hence the urgency for production of H2 is a concern to the scientific community. The major bottleneck for electrocatalytic hydrogen production is still exists as the reported catalysts, mainly noble metal based, are extremely costly. Thus the fabrication of cheap and noble metal free electrocatalyst for Hydrogen Evolution Reaction (HER) is still seeking. Here, a simplistic method is developed for the synthesis of carbon assimilated molybdenum carbide (β-Mo2C) hollow sphere which showed effective electrocatalysis for HER. The synthesis of desired β-Mo2C–C hollow sphere is based on high temperature carbothermal reduction (800 °C in 10%-H2/N2 atmosphere) of carbon incorporated MoO2 spheres. The synthesized β-Mo2C with an optimal carbon loading reaches 10 mA/cm−2 current density at a low overpotential of 146 mV with a small tafel slope of 90 mV dec−1 for the electrochemical hydrogen evolution (HER) in 0.5 M H2SO4. The improved catalytic performance, long-term stability make β-Mo2C–C hollow sphere an auspicious HER electrocatalyst.",

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