Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/78909
Title: Boosting oxygen reduction catalysis with N-doped carbon coated Co9S8 microtubes
Authors: Wu, ZX
Wang, J 
Song, M
Zhao, GM 
Zhu, Y 
Fu, GT
Liu, XE
Keywords: Co9S8
Microtubes
Exposed (022) lattice sites
N-doped carbon layer
Coordination effect
Oxygen reduction reaction
Issue Date: 2018
Publisher: American Chemical Society
Source: ACS applied materials and interfaces, 1 Aug. 2018, v. 10, no. 30, p. 25415-25421 How to cite?
Journal: ACS applied materials and interfaces 
Abstract: Herein, nitrogen-doped carbon coated hollow Co9S8 microtubes (Co9S8@N-C microtubes) are prepared through a facile solvothermal procedure, followed by dopamine polymerization process together with a post-pyrolysis which present excellent electrocatalytic activity for oxygen reduction reaction (ORR). The Co9S8 within the hollow Co9S8@N-C microtubes presents a well-defined single-crystal structure with dominated (022) plane. To obtain desired electrocatalyst, the annealing temperature and the thickness of carbon layer tuned by changing the dopamine concentration are optimized systematically. The electrochemical results demonstrate that the coordination of the N-doped carbon layer, exposed (022) plane, and hollow architecture of Co9S8 microtubes calcined at 700 degrees C affords outstanding ORR. performance to Co9S8@N-C microtubes. The moderate thickness of the carbon layer is crucial for improving ORR activity of Co9S8@N-C microtubes, while increasing or decreasing the thickness would result in activity decrease. More importantly, the N-doped carbon layer can protect inner Co9S8 from undergoing aggregation and dissolution effectively during the ORR, resulting in excellent electrocatalytic stability.
URI: http://hdl.handle.net/10397/78909
ISSN: 1944-8244
EISSN: 1944-8252
DOI: 10.1021/acsami.8b07207
Appears in Collections:Journal/Magazine Article

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

SCOPUSTM   
Citations

8
Citations as of Nov 29, 2018

WEB OF SCIENCETM
Citations

4
Last Week
0
Last month
Citations as of Dec 5, 2018

Page view(s)

6
Citations as of Dec 3, 2018

Google ScholarTM

Check

Altmetric


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