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Title: Investigation of the Li–S Battery Mechanism by Real-Time Monitoring of the Changes of Sulfur and Polysulfide Species during the Discharge and Charge

Abstract

The mechanism of the sulfur cathode in Li-S batteries has been proposed. It was revealed by the real-time quantitative determination of polysulfide species and elemental sulfur by means of the high performance liquid chromatography in the course of the discharge and recharge of a Li-S battery. A three-step reduction mechanism including two chemical equilibrium reactions was proposed for the sulfur cathode discharge. The typical two-plateau discharge curve for sulfur cathode can be explained. A two-step oxidation mechanism for the Li 2S and Li 2S 2 with a single chemical equilibrium among soluble polysulfide ions was proposed. In conclusion, the chemical equilibrium among S 5 2-, S 6 2-, S 7 2- and S 8 2- throughout the entire oxidation process resulted for the single flat recharge curve in Li-S batteries.

Authors:
 [1];  [2];  [1];  [1];  [1];  [1];  [3];  [4];  [1]
  1. Univ. of Wisconsin, Milwaukee, WI (United States). Dept. of Mechanical Engineering
  2. Wuhan Univ. of Technology, Wuhan (China). Dept. of Chemistry, School of Science
  3. Wuhan Univ. of Technology, Wuhan (China). Dept. of Chemistry, School of Science
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1342633
Report Number(s):
BNL-113427-2017-JA
Journal ID: ISSN 1944-8244; VT1201000; TRN: US1701649
Grant/Contract Number:
SC0012704; WUT 2015-IB-001
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 9; Journal Issue: 5; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Zheng, Dong, Liu, Dan, Harris, Joshua B., Ding, Tianyao, Si, Jingyu, Andrew, Sergei, Qu, Deyu, Yang, Xiao-Qing, and Qu, Deyang. Investigation of the Li–S Battery Mechanism by Real-Time Monitoring of the Changes of Sulfur and Polysulfide Species during the Discharge and Charge. United States: N. p., 2016. Web. doi:10.1021/acsami.6b08904.
Zheng, Dong, Liu, Dan, Harris, Joshua B., Ding, Tianyao, Si, Jingyu, Andrew, Sergei, Qu, Deyu, Yang, Xiao-Qing, & Qu, Deyang. Investigation of the Li–S Battery Mechanism by Real-Time Monitoring of the Changes of Sulfur and Polysulfide Species during the Discharge and Charge. United States. doi:10.1021/acsami.6b08904.
Zheng, Dong, Liu, Dan, Harris, Joshua B., Ding, Tianyao, Si, Jingyu, Andrew, Sergei, Qu, Deyu, Yang, Xiao-Qing, and Qu, Deyang. Fri . "Investigation of the Li–S Battery Mechanism by Real-Time Monitoring of the Changes of Sulfur and Polysulfide Species during the Discharge and Charge". United States. doi:10.1021/acsami.6b08904. https://www.osti.gov/servlets/purl/1342633.
@article{osti_1342633,
title = {Investigation of the Li–S Battery Mechanism by Real-Time Monitoring of the Changes of Sulfur and Polysulfide Species during the Discharge and Charge},
author = {Zheng, Dong and Liu, Dan and Harris, Joshua B. and Ding, Tianyao and Si, Jingyu and Andrew, Sergei and Qu, Deyu and Yang, Xiao-Qing and Qu, Deyang},
abstractNote = {The mechanism of the sulfur cathode in Li-S batteries has been proposed. It was revealed by the real-time quantitative determination of polysulfide species and elemental sulfur by means of the high performance liquid chromatography in the course of the discharge and recharge of a Li-S battery. A three-step reduction mechanism including two chemical equilibrium reactions was proposed for the sulfur cathode discharge. The typical two-plateau discharge curve for sulfur cathode can be explained. A two-step oxidation mechanism for the Li2S and Li2S2 with a single chemical equilibrium among soluble polysulfide ions was proposed. In conclusion, the chemical equilibrium among S52-, S62-, S72- and S82- throughout the entire oxidation process resulted for the single flat recharge curve in Li-S batteries.},
doi = {10.1021/acsami.6b08904},
journal = {ACS Applied Materials and Interfaces},
number = 5,
volume = 9,
place = {United States},
year = {Fri Sep 09 00:00:00 EDT 2016},
month = {Fri Sep 09 00:00:00 EDT 2016}
}

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Cited by: 7works
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