Chinese Journal of Catalysis ›› 2020, Vol. 41 ›› Issue (5): 839-846.DOI: 10.1016/S1872-2067(19)63488-1

• Special Column on Electrocatalysis • Previous Articles     Next Articles

Robust MOF-253-derived N-doped carbon confinement of Pt single nanocrystal electrocatalysts for oxygen evolution reaction

Hellen Gabriela Rivera Monestela, Ibrahim Saana Amiinua, Andrés Alvarado Gonzálezb, Zonghua Pua, BibiMaryam Mousavib, Shichun Mua   

  1. a State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China;
    b School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, Hubei, China
  • Received:2019-10-06 Revised:2019-11-23 Online:2020-05-18 Published:2019-12-31
  • Contact: S1872-2067(19)63488-1
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (51672204), and the National Key Research and Development Program of China (2016YFA0202603).

Abstract: Although carbon-supported platinum (Pt/C) is still considered the most active electrocatalyst for hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR), its applications in metal-air batteries as a cathode catalyst, or for oxygen generation via water splitting electrolysis as an anode catalyst is mainly constrained by the insufficient kinetic activity and stability in the oxygen evolution reaction (OER). Here, MOF-253-derived nitrogen-doped carbon (N/C)-confined Pt single nanocrystals (Pt@N/C) have been synthesized and shown to be efficient catalysts for the OER. Even with low Pt mass loading of 6.1 wt% (Pt@N/C-10), the catalyst exhibits greatly improved activity and long-time stability as an efficient OER catalyst. Such high catalytic performance is attributed to the core-shell structure relationship, in which the active N-doped-C shell not only provides a protective shield to avoid rapid Pt nanocrystal oxidation at high potentials and inhibits the Pt migration and agglomeration, but also improves the conductivity and charge transfer kinetics.

Key words: Pt, MOF-253, Carbon confinement, Oxygen evolution reaction, Electrocatalyst