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

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

Research output: Contribution to journalArticlepeer-review

24 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 languageEnglish
Pages (from-to)21655-21664
Number of pages10
JournalInternational Journal of Hydrogen Energy
DOIs
StatePublished - 22 Nov 2018
Externally publishedYes

Bibliographical note

Funding Information:
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.

Funding Information:
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.

Funding Information:
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.

Funding Information:
This work was supported by Science and Engineering Research Board , Department of Science and Technology, Government of India [grant numbers EMR/2014/001219 ].

Publisher Copyright:
© 2018 Hydrogen Energy Publications LLC

Keywords

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

Fingerprint

Dive into the research topics of 'Porous carbon incorporated Β-Mo2C hollow sphere: An efficient electrocatalyst for hydrogen evolution reaction'. Together they form a unique fingerprint.

Cite this