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Title: Probing Titanium Disulfide-Sulfur Composite Materials for Li-S Batteries via In Situ X-ray Diffraction (XRD)

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.1661704jes· OSTI ID:1377017
 [1];  [2];  [3];  [3];  [4]
  1. Stony Brook Univ., NY (United States). Dept. of Materials Science and Engineering
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Energy Sciences Directorate
  3. Stony Brook Univ., NY (United States). Dept. of Materials Science and Engineering and Dept. of Chemistry
  4. Stony Brook Univ., NY (United States). Dept. of Materials Science and Engineering and Dept. of Chemistry; Brookhaven National Lab. (BNL), Upton, NY (United States). Energy Sciences Directorate
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Development of Li-S batteries is hindered by sluggish kinetics resulting from the intrinsic poor conductivity of sulfur and capacity degradation due to solubility of intermediate lithium polysulfides (LiPS). A strategy for overcoming these issues is to use TiS2, which is a good electrical conductor and LiPS absorbant, as an additive to sulfur electrodes. Furthemore, from a structural perspective, we probed TiS2-S composite materials during electrochemical discharge and charge reactions in propylene-oxide based glyme (DPGDME) electrolyte using in-situ XRD, revealing the synergistic effects of TiS2 and S in the composites. TiS2 was found to function effectively as a conductive additive and improve the utilization of sulfur. Intercalation of Li+ into TiS2 takes place simultaneously with the sulfur-lithium reaction, and contributes favorably to the total realized capacity.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
SC00112704
OSTI ID:
1377017
Report Number(s):
BNL-114106-2017-JA
Journal Information:
Journal of the Electrochemical Society, Vol. 164, Issue 4; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

References (24)

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Cited By (6)

TiS 2 as an Advanced Conversion Electrode for Sodium-Ion Batteries with Ultra-High Capacity and Long-Cycle Life journal September 2018
Defect Control in the Synthesis of 2 D MoS 2 Nanosheets: Polysulfide Trapping in Composite Sulfur Cathodes for Li–S Batteries journal March 2020
In Situ Techniques for Developing Robust Li-S Batteries journal August 2018
Lab‐Scale In Situ X‐Ray Diffraction Technique for Different Battery Systems: Designs, Applications, and Perspectives journal May 2019
A soluble single atom catalyst promotes lithium polysulfide conversion in lithium sulfur batteries journal January 2019
Improvement of Li-Sulfur Cell Cycling Performance by Use of Fe 1-x S@NC as a Functional Additive for Chemical Confinement of Lithium Polysulfides journal December 2018

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Related Subjects

25 ENERGY STORAGE
conductivity
ether
lithium sulfur battery
polysulfide
titanium(IV) sulfide