Fabrication of MoSe2 decorated three-dimensional graphene composites structure as a highly stable electrocatalyst for improved hydrogen evolution reaction

Sajjad Hussain, Dhanasekaran Vikraman, Kamran Akbar, Bilal Abbas Naqvi, Syed Mustansar Abbas, Hyun Seok Kim, Seung Hyun Chun, Jongwan Jung

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Herein, we demonstrated the highly active and stable composites of molybdenum diselenide/carbon cloth (MoSe2/CC), molybdenum diselenide/nickel foam (MoSe2/NF), molybdenum diselenide (MoSe2/graphene/NF) electrocatalysts. The electrochemical hydrogen evolution reaction (HER) performance revealed that MoSe2/graphene/NF electrocatlyst have a platinum-like activity with overpotential 92 mV at 10 mA cm−2 and a small Tafel slope of 42 mV dec−1 in an acidic medium, which is the best among the non-noble metal hydrogen evolution catalysts. Our experimental findings validated by first-principle calculations using density of states near the Fermi level which increased the carrier concentration of electron and mobility for superior HER performance.

Original languageEnglish
Pages (from-to)1659-1669
Number of pages11
JournalRenewable Energy
Volume143
DOIs
StatePublished - Dec 2019

Keywords

  • Electrocatalyst
  • Gibbs energy
  • Graphene
  • Hybrids
  • MoSe

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