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Title: Probing Nitrogen-Doping Effects in the Core-Shell Structured Catalysts for Bifunctional Electrocatalysis.

Journal Article · · ChemCatChem
 [1];  [1];  [1];  [2];  [1];  [3];  [4]
  1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 P.R. China; University of Chinese Academy of Sciences, Beijing 100049 P.R. China
  2. Chemical Science and Engineering Division, Argonne National Laboratory, Lemont IL 60439 USA
  3. Center for Nanoscale Materials, Argonne National Laboratory, Lemont IL 60439 USA
  4. State Key Laboratory of High Performance Ceramics and Superfine Microstructures Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 P.R. China
+ Show Author Affiliations

The design of core-shell structured catalysts has attracted wide interests due to their remarkable catalytic performances in many fields. Although the nitrogen doping is often integrated in such kind of catalysts, the main contribution is exclusively attributed to the metal sites or the core-shell configuration. The role of nitrogen doping is often believed to be less important, which remains largely unexplored. Here, in an effort to probe the catalytic role of heterogeneous doping in such core-shell structure, the effect of nitrogen doping on the activation of cobalt and iron carbide-based materials for the electrocatalytic reduction of oxygen and the hydrogen evolution reaction is originally revealed. The nitrogen doping in the core-shell structured biphasic interfaces is found to be of critical importance for triggering the electrocatalytic activity and selectivity. Therefore, this study shows the neglected but critical role of nitrogen doping and biphasic interactions in a core-shell configuration, paving a new pathway towards the performance enhancement.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Key Basic Research Program of China
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1487122
Journal Information:
ChemCatChem, Vol. 10, Issue 19; ISSN 1867-3880
Publisher:
ChemPubSoc Europe
Country of Publication:
United States
Language:
English

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Related Subjects

biphasic interfaces
core-shell structure
electrocatalysis
nitrogen doping
transition metal sites