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Type: Journal article
Title: Co/N-C nanotubes with increased coupling sites by space-confined pyrolysis for high electrocatalytic activity
Author: Yang, J.
Li, L.
Yu, H.
Geng, H.
Li, C.
Dong, X.
Citation: Green Energy and Environment, 2017; 2(1):23-29
Publisher: Elsevier B.V. on behalf of KeAi Communications Co., Ltd
Issue Date: 2017
ISSN: 2468-0257
Statement of
Jun Yang, Laiquan Li, Hong Yu, Hongbo Geng, Chengchao Li, Xiaochen Dong
Abstract: Searching low cost and non-precious metal catalysts for high-performance oxygen reduction reaction is highly desired. Herein, Co nanoparticles embedded in nitrogen-doped carbon (Co/NeC) nanotubes with internal void space are successfully synthesized by space-confined pyrolysis, which effectively improve the cobalt loading content and restrict the encapsulated particles down to nanometer. Different from the typical conformal carbon encapsulation, the resulting Co/NeC nanotubes possess more cobalt nanoparticles embedded in the nanotubes, which can provide more coupling sites and active sites in the oxygen reduction reaction (ORR). Moreover, the one-dimensional and porous structure provides a high surface area and a fast electron transfer pathway for the ORR. And the Co/NeC electrode presents excellent electrocatalytic ORR activity in terms of low onset potential (30 mV lower than that of Pt/C), small Tafel slop (45.5 mV dec⁻¹) and good durability (88.5% retention after 10,000 s).
Keywords: Co nanoparticles; Nitrogen-doped carbon nanotubes; Oxygen reduction reaction
Description: Available online 10 November 2016
Rights: © 2017, Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC-ND license (
DOI: 10.1016/j.gee.2016.11.002
Grant ID: 21275076
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Chemical Engineering publications

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