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Title: Operando Multi-modal Synchrotron Investigation for Structural and Chemical Evolution of Cupric Sulfide (CuS) Additive in Li-S battery

Abstract

Conductive metal sulfides are promising multi-functional additives for future lithium-sulfur (Li-S) batteries. These can increase the sulfur cathode’s electrical conductivity to improve the battery’s power capability, as well as contribute to the overall cell-discharge capacity. This multi-functional electrode design showed initial promise; however, complicated interactions at the system level are accompanied by some detrimental side effects. The metal sulfide additives with a chemical conversion as the reaction mechanism, e.g., CuS and FeS 2, can increase the theoretical capacity of the Li-S system. However, these additives may cause undesired parasitic reactions, such as the dissolution of the additive in the electrolyte. Studying such complex reactions presents a challenge because it requires experimental methods that can track the chemical and structural evolution of the system during an electrochemical process. To address the fundamental mechanisms in these systems, we employed an operando multimodal x-ray characterization approach to study the structural and chemical evolution of the metal sulfide—utilizing powder diffraction and fluorescence imaging to resolve the former and absorption spectroscopy the latter—during lithiation and de-lithiation of a Li-S battery with CuS as the multi-functional cathode additive. The resulting elucidation of the structural and chemical evolution of the system leads to a new description ofmore » the reaction mechanism.« less

Authors:
 [1];  [2];  [2];  [3];  [3];  [3];  [3];  [3];  [3];  [2];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Stony Brook Univ., NY (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1413919
Report Number(s):
BNL-114411-2017-JA
Journal ID: ISSN 2045-2322
Grant/Contract Number:
SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Sun, Ke, Zhao, Chonghang, Lin, Cheng-Hung, Stavitski, Eli, Williams, Garth J., Bai, Jianming, Dooryhee, Eric, Attenkofer, Klaus, Thieme, Juergen, Chen-Wiegart, Yu-chen Karen, and Gan, Hong. Operando Multi-modal Synchrotron Investigation for Structural and Chemical Evolution of Cupric Sulfide (CuS) Additive in Li-S battery. United States: N. p., 2017. Web. doi:10.1038/s41598-017-12738-0.
Sun, Ke, Zhao, Chonghang, Lin, Cheng-Hung, Stavitski, Eli, Williams, Garth J., Bai, Jianming, Dooryhee, Eric, Attenkofer, Klaus, Thieme, Juergen, Chen-Wiegart, Yu-chen Karen, & Gan, Hong. Operando Multi-modal Synchrotron Investigation for Structural and Chemical Evolution of Cupric Sulfide (CuS) Additive in Li-S battery. United States. doi:10.1038/s41598-017-12738-0.
Sun, Ke, Zhao, Chonghang, Lin, Cheng-Hung, Stavitski, Eli, Williams, Garth J., Bai, Jianming, Dooryhee, Eric, Attenkofer, Klaus, Thieme, Juergen, Chen-Wiegart, Yu-chen Karen, and Gan, Hong. 2017. "Operando Multi-modal Synchrotron Investigation for Structural and Chemical Evolution of Cupric Sulfide (CuS) Additive in Li-S battery". United States. doi:10.1038/s41598-017-12738-0. https://www.osti.gov/servlets/purl/1413919.
@article{osti_1413919,
title = {Operando Multi-modal Synchrotron Investigation for Structural and Chemical Evolution of Cupric Sulfide (CuS) Additive in Li-S battery},
author = {Sun, Ke and Zhao, Chonghang and Lin, Cheng-Hung and Stavitski, Eli and Williams, Garth J. and Bai, Jianming and Dooryhee, Eric and Attenkofer, Klaus and Thieme, Juergen and Chen-Wiegart, Yu-chen Karen and Gan, Hong},
abstractNote = {Conductive metal sulfides are promising multi-functional additives for future lithium-sulfur (Li-S) batteries. These can increase the sulfur cathode’s electrical conductivity to improve the battery’s power capability, as well as contribute to the overall cell-discharge capacity. This multi-functional electrode design showed initial promise; however, complicated interactions at the system level are accompanied by some detrimental side effects. The metal sulfide additives with a chemical conversion as the reaction mechanism, e.g., CuS and FeS2, can increase the theoretical capacity of the Li-S system. However, these additives may cause undesired parasitic reactions, such as the dissolution of the additive in the electrolyte. Studying such complex reactions presents a challenge because it requires experimental methods that can track the chemical and structural evolution of the system during an electrochemical process. To address the fundamental mechanisms in these systems, we employed an operando multimodal x-ray characterization approach to study the structural and chemical evolution of the metal sulfide—utilizing powder diffraction and fluorescence imaging to resolve the former and absorption spectroscopy the latter—during lithiation and de-lithiation of a Li-S battery with CuS as the multi-functional cathode additive. The resulting elucidation of the structural and chemical evolution of the system leads to a new description of the reaction mechanism.},
doi = {10.1038/s41598-017-12738-0},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = 2017,
month =
}

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