Co(OH)2 nanosheet arrays electrodeposited with palladium nanoparticles for hydrogen evolution reaction

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Le Yang
  • Na Wang
  • Bairui Tao
  • Fengjuan Miao
  • Yu Zang

Detail(s)

Original languageEnglish
Article number151775
Journal / PublicationJournal of Alloys and Compounds
Volume810
Early online date9 Aug 2019
Publication statusE-pub ahead of print - 9 Aug 2019

Abstract

Palladium (Pd) nanoparticles in combination with naturally abundant materials are stable and highly active catalysts for hydrogen production. Herein, Co(OH)2 nanosheet arrays are prepared hydrothermally on graphene/nickel foam (graphene/NF) to produce Co(OH)2/graphene/NF which provides the desirable three-dimensional (3D) substrate for subsequent Pd electrodeposition to obtain Pd/Co(OH)2/graphene/NF. The materials exhibit excellent durability and catalytic performance in the hydrogen evolution reaction (HER) in an alkaline environment such as a low overpotential of 124 mV at 10 mA cm−2and Tafel slop of 53 mVdec−1. The excellent performance is attributed to the synergistic catalytic effects rendered by the nanostructured interfaces between the Pd nanoparticles and Co(OH)2 nanosheet arrays as well as large surface area. The technique and materials have large potential in energy conversion applications.

Research Area(s)

  • Co(OH)2, Durability, Hydrogenproduction, Pdnanoparticles