Versatile nanoporous bimetallic phosphides towards electrochemical water splitting

Yongwen Tan, Hao Wang, Pan Liu, Yuhao Shen, Chun Cheng, Akihiko Hirata, Takeshi Fujita, Zheng Tang, Mingwei Chen

Research output: Contribution to journalArticle

290 Citations (Scopus)

Abstract

Alloying is an important approach to improving catalytic activities and realizing new functions of heterogeneous catalysts, which has extensively been employed in fabricating noble metal based bimetallic catalysts. However, it is technically unviable in the synthesis of alloyed transition metal compounds, which are emerging as important catalysts for water splitting, in a controllable manner using conventional wet chemical methods. Here we report nanoporous bimetallic (Co1-xFex)2P phosphides with controllable compositions and tuneable porosity, which are fabricated by the combination of metallurgical alloy design and electrochemical etching. By tailoring the Co/Fe ratios and nanoporosity, the bimetallic phosphides exhibit versatile catalytic activities towards HER and OER in acidic and basic electrolytes. As both the cathode and the anode of an electrolyser, nanoporous (Co0.52Fe0.48)2P shows an outstanding performance in water electrolysis, comparable to the commercial electrolyser with paired Pt/C and IrO2 catalysts.

Original languageEnglish
Pages (from-to)2257-2261
Number of pages5
JournalEnergy and Environmental Science
Volume9
Issue number7
DOIs
Publication statusPublished - 2016 Jul

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

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  • Cite this

    Tan, Y., Wang, H., Liu, P., Shen, Y., Cheng, C., Hirata, A., Fujita, T., Tang, Z., & Chen, M. (2016). Versatile nanoporous bimetallic phosphides towards electrochemical water splitting. Energy and Environmental Science, 9(7), 2257-2261. https://doi.org/10.1039/c6ee01109h