Please use this identifier to cite or link to this item:
Title: In situ segregation of cobalt nanoparticles on VN nanosheets via nitriding of Co2V2O7 nanosheets as efficient oxygen evolution reaction electrocatalysts
Authors: Peng, X
Wang, L
Hu, LS 
Li, Y 
Gao, B
Song, H
Huang, C
Zhang, XM
Fu, JJ
Huo, KF
Chu, PK
Keywords: Cobalt nanoparticles
VN nanosheets
In situ segregation
Water splitting
Oxygen evolution reaction
Issue Date: 2017
Publisher: Elsevier
Source: Nano energy, 2017, v. 34, p. 1-7 How to cite?
Journal: Nano energy 
Abstract: Metallic Cobalt nanoparticles segregated in situ on conductive vanadium nitride (Co/VN) nanosheets synthesized by ammonia nitridation of hydrothermally prepared Co2V2O7 nanosheets are investigated as high-performance oxygen evolution reaction (OER) electrocatalysts. The metallic Co nanoparticles with a large number of exposed active sites are distributed uniformly and adhere firmly to the VN substrate to enhance the OER efficiency, facilitate fast charge transfer, and improve the stability. As a result, a small overpotential of 320 mV is required to achieve a current density of 10 mA cm(-2) with a small Tafel slope of 55 mV dec(-1). The excellent stability is indicated by an overpotential shift of only 34 mV after 2000 cyclic voltammetry cycles at a large current density of 200 mA cm(-2). The precious-metal-free Co/VN nanosheets deliver outstanding OER performance and are promising as electrocatalysts in water splitting and related applications.
ISSN: 2211-2855
EISSN: 2211-3282
DOI: 10.1016/j.nanoen.2017.02.016
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record


Citations as of May 12, 2018


Last Week
Last month
Citations as of May 20, 2018

Page view(s)

Citations as of May 21, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.