One step synthesis of Fe4.4Ni17.6Se16 coupled NiSe foam as self-supported, highly efficient and durable oxygen evolution electrode

Sainan Ma, Huiyu Yuan, Lejuan Cai, Xinyu Wang, Hui Long, Yang Chai, Yuen Hong Tsang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

The development of cost-effective, durable and high-efficient oxygen evolution reaction (OER) electrocatalysts is an extremely critical technology for the large-scale industrial water electrolysis. Here, a new strategy is proposed to significantly enhance the electrocatalytic activity by forming a hybrid electrode of NiSe and Fe4.4Ni17.6Se16 through direct selenization of porous iron-nickel (FeNi) alloy foam via thermal selenization process. The obtained self-supported Fe4.4Ni17.6Se16/NiSe hybrid (FNS/NiSe) foam displays outstanding durability and remarkable catalytic activity in 1.0 M KOH with low overpotentials of 242 and 282 mV to achieve the current densities of 100 and 500 mA cm−2, respectively. To the best of our knowledge, it exceeds most of the reported OER electrocatalysts in alkaline electrolytes.

Original languageEnglish
Pages (from-to)133-139
Number of pages7
JournalMaterials Today Chemistry
Volume9
DOIs
Publication statusPublished - Sep 2018

Keywords

  • Electrocatalyst
  • FeNiSe/NiSe hybrid
  • Heterointerfaces
  • Oxygen evolution reaction
  • Thermal selenization

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

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