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Hollow Cobalt Phosphide with N-Doped Carbon Skeleton as Bifunctional Electrocatalyst for Overall Water Splitting.

Authors
  • Xie, Yanyu1
  • Chen, Minqi1
  • Cai, Mengke1
  • Teng, Jun1
  • Huang, Huanfeng1
  • Fan, Yanan1
  • Barboiu, Mihail1, 2
  • Wang, Dawei1
  • Su, Cheng-Yong1
  • 1 MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China. , (China)
  • 2 Institut Europeen des Membranes, Adaptive Supramolecular Nanosystems Group , University of Montpellier , ENSCM-CNRS, Pl. E. Bataillon CC047 , Montpellier 34095 , France. , (France)
Type
Published Article
Journal
Inorganic Chemistry
Publisher
American Chemical Society
Publication Date
Nov 04, 2019
Volume
58
Issue
21
Pages
14652–14659
Identifiers
DOI: 10.1021/acs.inorgchem.9b02333
PMID: 31603662
Source
Medline
Language
English
License
Unknown

Abstract

The development of cost-effective, high-performance, and robust bifunctional electrocatalysts for overall water splitting remains highly desirable yet quite challenging. Here, by selecting appreciate precursors of dopamine and a Co-containing metal-organic framework of ZIF-67, we subtly couple their reaction processes to develop a facile approach for the synthesis of a hollow CoP nanostructure with N-doped carbon skeleton ([email protected]). Benefiting from the highly porous nanostructure and conductive carbon skeleton, [email protected] is capable of working as highly active and durable bifunctional electrocatalyst for both hydrogen and oxygen evolution reaction. When further used as the electrocatalyst for overall water splitting, [email protected] delivers excellent activity (cell voltage of 1.72 V at a current density of 10 mA cm-2), close to that of the noble-metal-based benchmark catalyst couple of Pt/C||RuO2. Our work thus provides new insights into the development of transitional metal phosphides based hollow hybrid nanostructures, particularly those with multiple functionalities in sustainable energy conversion technologies and systems.

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