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Title: Sulfur redox reactions on nanostructured highly oriented pyrolytic graphite (HOPG) electrodes: Direct evidence for superior electrocatalytic performance on defect sites

Abstract

Fundamental research of sulfur redox reactions on well-defined controlled model electrode surfaces can provide new information to design high-performance lithium-sulfur batteries. In this paper, we study the electrochemical reduction and oxidation of sulfur on the nanostructured HOPG electrodes with pure basal planes, step plans, and pure edge planes. Finally, our results directly indicate that electrochemical reduction and oxidation of sulfur is significantly affected by the carbon surface structure, namely, the electrochemical reversibility of sulfur redox reaction is much better on edge plane, compared with basal plane and step plane.

Authors:
 [1];  [1];  [1];  [2];  [1]
  1. Univ. of Wisconsin, Milwaukee, WI (United States). Dept. of Mechanical Engineering. College of Engineering and Applied Science
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of Wisconsin, Milwaukee, WI (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1439794
Alternate Identifier(s):
OSTI ID: 1396921
Report Number(s):
BNL-113879-2017-JAAM
Journal ID: ISSN 0008-6223
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Carbon
Additional Journal Information:
Journal Volume: 119; Journal ID: ISSN 0008-6223
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Wang, Gongwei, Zheng, Dong, Liu, Dan, Yang, Xiao-Qing, and Qu, Deyang. Sulfur redox reactions on nanostructured highly oriented pyrolytic graphite (HOPG) electrodes: Direct evidence for superior electrocatalytic performance on defect sites. United States: N. p., 2017. Web. https://doi.org/10.1016/j.carbon.2017.04.066.
Wang, Gongwei, Zheng, Dong, Liu, Dan, Yang, Xiao-Qing, & Qu, Deyang. Sulfur redox reactions on nanostructured highly oriented pyrolytic graphite (HOPG) electrodes: Direct evidence for superior electrocatalytic performance on defect sites. United States. https://doi.org/10.1016/j.carbon.2017.04.066
Wang, Gongwei, Zheng, Dong, Liu, Dan, Yang, Xiao-Qing, and Qu, Deyang. Fri . "Sulfur redox reactions on nanostructured highly oriented pyrolytic graphite (HOPG) electrodes: Direct evidence for superior electrocatalytic performance on defect sites". United States. https://doi.org/10.1016/j.carbon.2017.04.066. https://www.osti.gov/servlets/purl/1439794.
@article{osti_1439794,
title = {Sulfur redox reactions on nanostructured highly oriented pyrolytic graphite (HOPG) electrodes: Direct evidence for superior electrocatalytic performance on defect sites},
author = {Wang, Gongwei and Zheng, Dong and Liu, Dan and Yang, Xiao-Qing and Qu, Deyang},
abstractNote = {Fundamental research of sulfur redox reactions on well-defined controlled model electrode surfaces can provide new information to design high-performance lithium-sulfur batteries. In this paper, we study the electrochemical reduction and oxidation of sulfur on the nanostructured HOPG electrodes with pure basal planes, step plans, and pure edge planes. Finally, our results directly indicate that electrochemical reduction and oxidation of sulfur is significantly affected by the carbon surface structure, namely, the electrochemical reversibility of sulfur redox reaction is much better on edge plane, compared with basal plane and step plane.},
doi = {10.1016/j.carbon.2017.04.066},
journal = {Carbon},
number = ,
volume = 119,
place = {United States},
year = {2017},
month = {4}
}

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Cited by: 1 work
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Works referenced in this record:

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    Works referencing / citing this record:

    The Progress of Li-S Batteries-Understanding of the Sulfur Redox Mechanism: Dissolved Polysulfide Ions in the Electrolytes
    journal, June 2018

    • Zheng, Dong; Wang, Gongwei; Liu, Dan
    • Advanced Materials Technologies, Vol. 3, Issue 9
    • DOI: 10.1002/admt.201700233