Improving Hydrogen Evolution Activity of Earth-Abundant Cobalt-Doped Iron Pyrite Catalysts by Surface Modification with Phosphide

Tsung Rong Kuo, Wei Ting Chen, Hsiang Ju Liao, Yu Hsiu Yang, Hung Chi Yen, Ting Wei Liao, Cheng Yen Wen, Yi Cheng Lee, Chia Chun Chen, Di Yan Wang

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Abstract

A study is conducted to improve hydrogen evolution reaction (HER) of earth-abundant cobalt-doped iron pyrite catalysts by surface modification with phosphide. To improve the conductivity of earth-abundant materials, electrocatalysts are directly grown on substrates such as reduced graphene oxide sheets, carbon nanotubes, and carbon-fiber papers, resulting in enhanced HER catalytic activities. Doping metal catalysts with additional metal atoms is an alternative approach to improve intrinsic catalytic activities for the HER. Se-doped MoS2 have showed excellent catalytic activity with a lower overpotential of -140 mV and a smaller Tafel slope of 55 mV per decade compared to those of pristine MoS2.

Original languageEnglish
Article number1603356
JournalSmall
Volume13
Issue number8
DOIs
Publication statusPublished - 2017 Jan 1
Externally publishedYes

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Keywords

  • catalysts
  • earth abundant
  • hydrogen evolution reaction
  • iron pyrite
  • phosphide

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

Cite this

Kuo, T. R., Chen, W. T., Liao, H. J., Yang, Y. H., Yen, H. C., Liao, T. W., Wen, C. Y., Lee, Y. C., Chen, C. C., & Wang, D. Y. (2017). Improving Hydrogen Evolution Activity of Earth-Abundant Cobalt-Doped Iron Pyrite Catalysts by Surface Modification with Phosphide. Small, 13(8), [1603356]. https://doi.org/10.1002/smll.201603356