Chinese Journal of Catalysis ›› 2020, Vol. 41 ›› Issue (2): 242-248.DOI: 10.1016/S1872-2067(19)63410-8

• Communication • Previous Articles     Next Articles

In situ assembly of metal-organic framework-derived N-doped carbon/Co/CoP catalysts on carbon paper for water splitting in alkaline electrolytes

Meiyu Cong, Deshuai Sun, Linlin Zhang, Xin Ding   

  1. College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, Shandong, China
  • Received:2019-04-17 Revised:2019-05-24 Online:2020-02-18 Published:2019-11-04
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (21573033), Shandong Provincial Natural Science Foundation, China (ZR2018BB037), Project of Shandong Province Higher Educational Science and Technology Program (J17KA104), and Project of Qingdao Applied Basic Research Programs of Science and Technology (18-2-2-10-jch and 18-2-2-35-jch).

Abstract: High-performance and cost-effective catalysts for water splitting are key components of hydrogen-based energy technologies. Metal-organic framework (MOF)-derived metal phosphide composites have immense potential as highly active and stable electrocatalysts but suffer from the poor efficacy of available electrode assembly methods. In this study, an MOF-derived nitrogen-doped porous carbon/Co/CoP/carbon paper (NC/Co/CoP/CP) composite electrode was assembled by electrophoretic deposition and post-processing reactions. The binder-free electrode showed good catalytic activity, significantly higher than that of traditional electrodes. The electrode required overpotentials of 208 and 350 mV to achieve a current density of 10 mA/cm2 for the hydrogen and oxygen evolution reactions, respectively. This facile synthetic method provides a promising route for designing metal-doped and multi-metal phase MOF-derived composite electrodes for energy storage and conversion devices.

Key words: Water splitting, Hydrogen evolution reaction catalyst, Electrophoretic deposition, Metal-organic framework