Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/127209
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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 & Environment, 2017; 2(1):23-29 |
Publisher: | Elsevier B.V. on behalf of KeAi Communications Co., Ltd |
Issue Date: | 2017 |
ISSN: | 2468-0257 2468-0257 |
Statement of Responsibility: | 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 (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
DOI: | 10.1016/j.gee.2016.11.002 |
Grant ID: | 21275076 61525402 21303047 |
Published version: | http://dx.doi.org/10.1016/j.gee.2016.11.002 |
Appears in Collections: | Aurora harvest 8 Chemical Engineering publications |
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hdl_127209.pdf | Published version | 1.58 MB | Adobe PDF | View/Open |
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