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  • 文献标题:   Copper nickel@reduced graphene oxide nanocomposite as bifunctional electro-catalyst for excellent oxygen evolution and oxygen reduction reactions
  • 文献类型:   Article
  • 作　　者:   ALENIZI AM, UBAIDULLAH M, AHMED J, ALROBEI H, ALSHEHRI SM
  • 作者关键词:   cuni@rgonc, nanocomposite, nanoparticle, electrocatalysi, energy storage conversion
  • 出版物名称:   MATERIALS LETTERS
  • ISSN:   0167-577X EI 1873-4979
  • 通讯作者地址:   King Saud Univ
  • 被引频次:   5
  • DOI:   10.1016/j.matlet.2019.126969
  • 出版年:   2020

▎ 摘　　要

Herein, we demonstrate that copper nickel (CuNi)@reduced graphene oxide (RGO) nanocomposite (NC) is an excellent bifunctional electro-catalyst to oxygen evolution (OER) and oxygen reduction reactions (ORR). CuNi@RGO-NC shows impressive electro-catalytic activity with fairly low onset over-potentials for OER (similar to 135 mV) and ORR (similar to 60 mV) in alkaline medium. Tafel slopes of CuNi@RGO-NC were found to be similar to 182 and similar to 86 mV/dec for OER and ORR, respectively. CuNi@RGO-NC exhibits better retention rate (88%) than CuNi nanoparticles (NPs) and also reveals the comparable OER/ORR activities with expensive electro-catalysts (20% Pt/C). (C) 2019 Elsevier B.V. All rights reserved.