Design and Mechanistic Study of Highly-durable Carbon Coated Cobalt Diphosphide Core-shell Nanostructure Electrocatalyst for the Efficient and Stable Oxygen Evolution Reaction

Merfat Alsabban, Xiulin Yang, Wandi Wahyudi, Jui-Han Fu, Mohamed N. Hedhili, Jun Ming, Chih-Wen Yang, M. Amtiaz Nadeem, Hicham Idriss, Zhiping Lai, Lain-Jong Li, Vincent Tung, Kuo-Wei Huang

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Facile synthesis of hierarchically functional, catalytically active, and electrochemically stable nanostructures holds tremendous promise for catalyzing efficient and durable oxygen evolution reaction (OER), yet remains a formidable challenge. Herein, we report the scalable production of core-shell nanostructures comprised of carbon-coated cobalt diphosphide nanosheets, C@CoP2, via three simple steps: (i) electrochemical deposition of Co-species; (ii) gas phase phosphidation, and (iii) carbonization of CoP2 for catalytic durability enhancement. Electrochemical characterizations showed that C@CoP2 delivers an overpotential of 234 mV, retains its initial activity for over 80 hours of continuous operation, and exhibits a fast OER rate of 63.8 mV dec-1 in base.
Original languageEnglish (US)
Pages (from-to)20752-20761
Number of pages10
JournalACS Applied Materials & Interfaces
Volume11
Issue number23
DOIs
StatePublished - May 16 2019

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