Abstract
The facile synthesis of hierarchically functional, catalytically active, and electrochemically stable nanostructures holds a tremendous promise for catalyzing the efficient and durable oxygen evolution reaction (OER) and yet remains a formidable challenge. Herein, we report the scalable production of core-shell nanostructures composed 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 h of continuous operation, and exhibits a fast OER rate of 63.8 mV dec-1 in base.
Original language | English (US) |
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Pages (from-to) | 20752-20761 |
Number of pages | 10 |
Journal | ACS Applied Materials and Interfaces |
Volume | 11 |
Issue number | 23 |
DOIs | |
State | Published - Jun 12 2019 |
Keywords
- carbon coating
- cobalt diphosphide
- electrochemical catalyst
- oxygen evolution reaction (OER)
- phosphidation
ASJC Scopus subject areas
- General Materials Science