Strategies for developing transition metal phosphides as heterogeneous electrocatalysts for water splitting

Yang Wang, Biao Kong, Dongyuan Zhao, Huanting Wang, Cordelia Selomulya

Research output: Contribution to journalArticleResearchpeer-review

221 Citations (Scopus)

Abstract

Transition metal phosphides (TMPs), as non-precious metal compounds, have attracted growing interest as heterogeneous electrocatalysts for overall water splitting. They have been studied as robust catalysts for hydrogen evolution reaction (HER) at a wide pH range. In particular, Fe, Co, Ni-based phosphides also showed high performance for oxygen evolution reaction (OER) in alkaline solutions. This review focuses on the strategies developed for preparing TMPs with enhanced HER or OER performance. These strategies include tuning the stoichiometric ratio of metal and phosphorous, hetero-atom doping or alloying, forming nano-carbon/TMPs hybrids and engineering special structures by modifying surface wettability, forming hetero-structure interfaces and generating porous structures. In terms of elemental doping strategy, the reported performance of Fe, Co, Ni-based alloying phosphides as bifunctional catalysts for both HER and OER are also summarized. Finally, the challenges and perspectives for TMPs in water splitting application are briefly discussed.

Original languageEnglish
Pages (from-to)26-55
Number of pages30
JournalNano Today
Volume15
DOIs
Publication statusPublished - 1 Aug 2017

Keywords

  • Doping/alloying
  • Hydrogen evolution reaction
  • Nano-carbon
  • Oxygen evolution reaction
  • Stoichiometric ratio
  • Transition metal phosphides

Cite this