skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A core–shell electrode for dynamically and statically stable Li–S battery chemistry

Abstract

Sulfur is an appealing cathode material for establishing advanced lithium batteries as it offers a high theoretical capacity of 1675 mA h g -1 at low material and operating costs. However, the lithium–sulfur (Li–S) electrochemical cells face several formidable challenges arising from both the materials chemistry (e.g., low electrochemical utilization of sulfur and severe polysulfide diffusion) and battery chemistry (e.g., dynamic and static instability and low sulfur loadings). Here in this study, we present the design of a core–shell cathode with a pure sulfur core shielded within a conductive shell-shaped electrode. The new electrode configuration allows Li–S cells to load with a high amount of sulfur (sulfur loadings of up to 30 mg cm -2 and sulfur content approaching 70 wt%). The core–shell cathodes demonstrate a superior dynamic and static electrochemical stability in Li–S cells. The high-loading cathodes exhibit (i) a high sulfur utilization of up to 97% at C/20–C/2 rates and (ii) a low self-discharge during long-term cell storage for a three-month rest period and at different cell-storage conditions. Finally, a polysulfide-trap cell configuration is designed to evidence the eliminations of polysulfide diffusion and to investigate the relationship between the electrode configuration and electrochemical characteristics. Finally, the comprehensive analyticalmore » results based on the high-loading cathodes suggest that (i) the core–shell cathode is a promising solution for designing highly reversible Li–S cells and (ii) the polysulfide-trap cell configuration is a viable approach to qualitatively evaluating the presence or absence of polysulfide diffusion.« less

Authors:
 [1];  [1];  [1]
  1. Univ. of Texas, Austin, TX (United States). Materials Science and Engineering Program & Texas Materials Institute
Publication Date:
Research Org.:
Univ. of Texas, Austin, TX (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1430184
Alternate Identifier(s):
OSTI ID: 1487236
Grant/Contract Number:  
EE0007218
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Energy & Environmental Science
Additional Journal Information:
Journal Volume: 9; Journal Issue: 10; Journal ID: ISSN 1754-5692
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE

Citation Formats

Chung, Sheng-Heng, Chang, Chi-Hao, and Manthiram, Arumugam. A core–shell electrode for dynamically and statically stable Li–S battery chemistry. United States: N. p., 2016. Web. doi:10.1039/c6ee01280a.
Chung, Sheng-Heng, Chang, Chi-Hao, & Manthiram, Arumugam. A core–shell electrode for dynamically and statically stable Li–S battery chemistry. United States. doi:10.1039/c6ee01280a.
Chung, Sheng-Heng, Chang, Chi-Hao, and Manthiram, Arumugam. Wed . "A core–shell electrode for dynamically and statically stable Li–S battery chemistry". United States. doi:10.1039/c6ee01280a. https://www.osti.gov/servlets/purl/1430184.
@article{osti_1430184,
title = {A core–shell electrode for dynamically and statically stable Li–S battery chemistry},
author = {Chung, Sheng-Heng and Chang, Chi-Hao and Manthiram, Arumugam},
abstractNote = {Sulfur is an appealing cathode material for establishing advanced lithium batteries as it offers a high theoretical capacity of 1675 mA h g-1 at low material and operating costs. However, the lithium–sulfur (Li–S) electrochemical cells face several formidable challenges arising from both the materials chemistry (e.g., low electrochemical utilization of sulfur and severe polysulfide diffusion) and battery chemistry (e.g., dynamic and static instability and low sulfur loadings). Here in this study, we present the design of a core–shell cathode with a pure sulfur core shielded within a conductive shell-shaped electrode. The new electrode configuration allows Li–S cells to load with a high amount of sulfur (sulfur loadings of up to 30 mg cm-2 and sulfur content approaching 70 wt%). The core–shell cathodes demonstrate a superior dynamic and static electrochemical stability in Li–S cells. The high-loading cathodes exhibit (i) a high sulfur utilization of up to 97% at C/20–C/2 rates and (ii) a low self-discharge during long-term cell storage for a three-month rest period and at different cell-storage conditions. Finally, a polysulfide-trap cell configuration is designed to evidence the eliminations of polysulfide diffusion and to investigate the relationship between the electrode configuration and electrochemical characteristics. Finally, the comprehensive analytical results based on the high-loading cathodes suggest that (i) the core–shell cathode is a promising solution for designing highly reversible Li–S cells and (ii) the polysulfide-trap cell configuration is a viable approach to qualitatively evaluating the presence or absence of polysulfide diffusion.},
doi = {10.1039/c6ee01280a},
journal = {Energy & Environmental Science},
number = 10,
volume = 9,
place = {United States},
year = {Wed Aug 17 00:00:00 EDT 2016},
month = {Wed Aug 17 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 53 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

New insights into the limiting parameters of the Li/S rechargeable cell
journal, February 2012


Porous Hollow Carbon@Sulfur Composites for High-Power Lithium-Sulfur Batteries
journal, May 2011

  • Jayaprakash, N.; Shen, J.; Moganty, Surya S.
  • Angewandte Chemie International Edition, Vol. 50, Issue 26, p. 5904-5908
  • DOI: 10.1002/anie.201100637

Lithium-Sulfur Cells: The Gap between the State-of-the-Art and the Requirements for High Energy Battery Cells
journal, April 2015

  • Hagen, Markus; Hanselmann, Dominik; Ahlbrecht, Katharina
  • Advanced Energy Materials, Vol. 5, Issue 16, 1401986
  • DOI: 10.1002/aenm.201401986

On the Surface Chemical Aspects of Very High Energy Density, Rechargeable Li–Sulfur Batteries
journal, January 2009

  • Aurbach, Doron; Pollak, Elad; Elazari, Ran
  • Journal of The Electrochemical Society, Vol. 156, Issue 8, p. A694-A702
  • DOI: 10.1149/1.3148721

Polysulfide Shuttle Study in the Li/S Battery System
journal, January 2004

  • Mikhaylik, Yuriy V.; Akridge, James R.
  • Journal of The Electrochemical Society, Vol. 151, Issue 11, p. A1969-A1976
  • DOI: 10.1149/1.1806394

Li�O2 and Li�S batteries with high energy storage
journal, January 2012

  • Bruce, Peter G.; Freunberger, Stefan A.; Hardwick, Laurence J.
  • Nature Materials, Vol. 11, Issue 1, p. 19-29
  • DOI: 10.1038/nmat3191

High Energy Density Lithium-Sulfur Batteries: Challenges of Thick Sulfur Cathodes
journal, March 2015

  • Lv, Dongping; Zheng, Jianming; Li, Qiuyan
  • Advanced Energy Materials, Vol. 5, Issue 16, Article No. 1402290
  • DOI: 10.1002/aenm.201402290