Design and Mechanistic Study of Highly-durable Carbon Coated Cobalt Diphosphide Core-shell Nanostructure Electrocatalyst for the Efficient and Stable Oxygen Evolution Reaction
Hedhili, Mohamed N.
Nadeem, M. Amtiaz
Tung, Vincent C.
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Chemical Science Program
Chemical and Biological Engineering Program
KAUST Catalysis Center (KCC)
Materials Science and Engineering Program
Physical Sciences and Engineering (PSE) Division
SABIC - Corporate Research and Innovation Center (CRI) at KAUST
Permanent link to this recordhttp://hdl.handle.net/10754/652937
MetadataShow full item record
AbstractFacile 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.
CitationAlsabban MM, Yang X, Wahyudi W, Fu J-H, Hedhili MN, et al. (2019) Design and Mechanistic Study of Highly-durable Carbon Coated Cobalt Diphosphide Core-shell Nanostructure Electrocatalyst for the Efficient and Stable Oxygen Evolution Reaction. ACS Applied Materials & Interfaces. Available: http://dx.doi.org/10.1021/acsami.9b01847.
SponsorsWe thank King Abdullah University of Science and Technology (KAUST) for generous financial support. The work was in part funded by SABIC-CRD at KAUST, grant number OSR #3041. V. T. acknowledges the support from User Proposals (#4420 and #5067) at the Molecular Foundry, Lawrence Berkeley National Lab, supported by the Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
PublisherAmerican Chemical Society (ACS)