Special Issue
  • Cobalt Vanadium Heterointerface Modulated Co2P/VP Heterostructure Electrocatalyst for Robust Water Splitting

  • Purna Prasad Dhakal*, Ganesh Bhandari*, Hoang Tuan Nguyen*, Duy Thanh Tran*, Nam Hoon Kim*† , Joong Hee Lee*, **†

  • * Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Korea
    ** Carbon Composite Research Center, Department of Polymer-Nano Science and Technology, Jeonbuk National University, Jeonju 54896, Korea

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The rational synthesis of efficient transitional metal phosphides (TMPs) could revolutionize green hydrogen production via water splitting. Hydrogen, with the highest energy density among fuels, stands out as an excellent alternative to address environmental issues and ensure sustainable future energy generation. However, the limited availability of state-of-the-art electrocatalysts like Pt/C and RuO2, used for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively, necessitates the development of cost-effective and non-noble electrocatalysts for green hydrogen production. In this context, we present a novel heterointerface-modulated heterostructure design comprising ultrathin nanosheets of a 3D Co2P/VP heterostructure on a conductive nickel foam substrate. This heterostructure demonstrates remarkably low overpotentials of 96 mV for HER and 237 mV for OER at 10 mA cm-2. The material's robust electrochemical kinetics are further evidenced by low Tafel slopes of 68.28 mV dec-1 and 116.54 mV dec-1, respectively.


Keywords: Phosphides, HER, OER, Heterostructure, Water splitting

This Article

Correspondence to

  • Nam Hoon Kim* , Joong Hee Lee*, **

  • * Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Korea
    ** Carbon Composite Research Center, Department of Polymer-Nano Science and Technology, Jeonbuk National University, Jeonju 54896, Korea

  • E-mail: Prof. Nam Hoon Kim (E-mail: nhk@jbnu.ac.kr) and Pr