NDLI: Electrochemical Preparation of N-Doped Cobalt Oxide Nanoparticles with High Electrocatalytic Activity for the Oxygen-Reduction Reaction

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Li, Xiaohong Yang, Shihe Fan, Louzhen Yu, Hongtao Li, Yunchao
Description	Author Affiliation: Yu H ( Department of Chemistry, Beijing Normal University, Beijing, 100875 (P.R. China).)
Abstract	Nitrogen-doped CoO (N-CoO) nanoparticles with high electrocatalytic activity for the oxygen-reduction reaction (ORR) were fabricated by electrochemical reduction of $CoCl_{2}$ in acetonitrile solution at cathodic potentials. The initially generated, highly reactive nitrogen-doped Co nanoparticles were readily oxidized to N-CoO nanoparticles in air. In contrast to their N-free counterparts (CoO or $Co_{3}O_{4}),$ N-CoO nanoparticles with a N content of about 4.6 % exhibit remarkable ORR electrocatalytic activity, stability, and immunity to methanol crossover in an alkaline medium. The $CoN_{x}$ active sites in the CoO nanoparticles are held responsible for the high ORR activity. This work opens a new path for the preparation of nitrogen-doped transition metal oxide nanomaterials, which are promising electrocatalysts for fuel cells.
ISSN	09476539
e-ISSN	15213765
Journal	Chemistry - A European Journal
Issue Number	12
Volume Number	20
Language	English
Publisher	Wiley-VCH;ChemPubSoc Europe
Publisher Date	2014-03-17
Publisher Place	Germany
Access Restriction	Open
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Catalysis

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Electrochemical Preparation of N-Doped Cobalt Oxide Nanoparticles with High Electrocatalytic Activity for the Oxygen-Reduction Reaction