Jump to main content
Jump to site search

Issue 45, 2019
Previous Article Next Article

Invigorating the catalytic performance of CoP through interfacial engineering by Ni2P precipitation

Author affiliations

Abstract

CoP is a very prospective low-cost candidate for the hydrogen evolution reaction catalyst, but it is still far from substituting noble-metal Pt because of the high Gibbs free energy of hydrogen adsorption. With the help of an isostructural precursor of Co(OH)2 and Ni(OH)2, Ni2P clusters could be inlayed in CoP nanosheets. The extensive interface region between CoP and Ni2P caused by the lattice mismatch lowers the hydrogen bonding energy. Meanwhile, the boundaries on the surfaces create an opportunity for the CoP and Ni2P couple to exert a synergistic effect and promote the catalytic activity. The catalyst shows excellent electrochemical activity in acidic, neutral or alkaline solution, and it also has excellent performance for the oxygen evolution reaction. The electrochemical compatibility of the couple makes sure that the catalyst can work stably in a harsh catalysis environment. So, the full cell for electrochemical water splitting with the catalyst on both the anode and the cathode only needs 1.60 V to achieve a current density of 10 mA cm−2.

Graphical abstract: Invigorating the catalytic performance of CoP through interfacial engineering by Ni2P precipitation

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Sep 2019, accepted on 23 Oct 2019 and first published on 23 Oct 2019


Article type: Paper
DOI: 10.1039/C9TA10498D
J. Mater. Chem. A, 2019,7, 26177-26186

  •   Request permissions

    Invigorating the catalytic performance of CoP through interfacial engineering by Ni2P precipitation

    J. Zhang, S. Wei, Y. Liu, G. Wang, Y. Cui, A. Dong, S. Xu, J. Lian and Q. Jiang, J. Mater. Chem. A, 2019, 7, 26177
    DOI: 10.1039/C9TA10498D

Search articles by author

Spotlight

Advertisements