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Title: Amorphous MoS 3 as the sulfur-equivalent cathode material for room-temperature Li–S and Na–S batteries

Abstract

Many problems associated with Li-S and Na-S batteries essentially root in the generation of their soluble polysulfide intermediates. While conventional wisdom mainly focuses on trapping polysulfides at the cathode using various functional materials, few strategies are available at present to fully resolve or circumvent this long-standing issue. In this study, we propose the concept of sulfur-equivalent cathode materials, and demonstrate the great potential of amorphous MoS 3 as such a material for room-temperature Li-S and Na-S batteries. In Li-S batteries, MoS 3 exhibits sulfur-like behavior with large reversible specific capacity, excellent cycle life, and the possibility to achieve high areal capacity. Most remarkably, it is also fully cyclable in the carbonate electrolyte under a relatively high temperature of 55 degrees C. MoS 3 can also be used as the cathode material of even more challenging Na-S batteries to enable decent capacity and good cycle life. Operando X-ray absorption spectroscopy (XAS) experiments are carried out to track the structural evolution of MoS 3. It largely preserves its chain-like structure during repetitive battery cycling without generating any free polysulfide intermediates.

Authors:
 [1];  [2];  [1];  [1];  [1];  [1];  [1];  [2];  [1];  [2]
  1. Soochow Univ., Suzhou (China)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Ministry of Science and Technology of the People's Republic of China; National Natural Science Foundation of China (NNSFC); National Natural Science Foundation of Jiangsu Province; Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1461311
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 114; Journal Issue: 50; Journal ID: ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Li-S battery; Na-S battery; amorphous MoS3; carbonate

Citation Formats

Ye, Hualin, Ma, Lu, Zhou, Yu, Wang, Lu, Han, Na, Zhao, Feipeng, Deng, Jun, Wu, Tianpin, Li, Yanguang, and Lu, Jun. Amorphous MoS3 as the sulfur-equivalent cathode material for room-temperature Li–S and Na–S batteries. United States: N. p., 2017. Web. doi:10.1073/pnas.1711917114.
Ye, Hualin, Ma, Lu, Zhou, Yu, Wang, Lu, Han, Na, Zhao, Feipeng, Deng, Jun, Wu, Tianpin, Li, Yanguang, & Lu, Jun. Amorphous MoS3 as the sulfur-equivalent cathode material for room-temperature Li–S and Na–S batteries. United States. doi:10.1073/pnas.1711917114.
Ye, Hualin, Ma, Lu, Zhou, Yu, Wang, Lu, Han, Na, Zhao, Feipeng, Deng, Jun, Wu, Tianpin, Li, Yanguang, and Lu, Jun. Mon . "Amorphous MoS3 as the sulfur-equivalent cathode material for room-temperature Li–S and Na–S batteries". United States. doi:10.1073/pnas.1711917114. https://www.osti.gov/servlets/purl/1461311.
@article{osti_1461311,
title = {Amorphous MoS3 as the sulfur-equivalent cathode material for room-temperature Li–S and Na–S batteries},
author = {Ye, Hualin and Ma, Lu and Zhou, Yu and Wang, Lu and Han, Na and Zhao, Feipeng and Deng, Jun and Wu, Tianpin and Li, Yanguang and Lu, Jun},
abstractNote = {Many problems associated with Li-S and Na-S batteries essentially root in the generation of their soluble polysulfide intermediates. While conventional wisdom mainly focuses on trapping polysulfides at the cathode using various functional materials, few strategies are available at present to fully resolve or circumvent this long-standing issue. In this study, we propose the concept of sulfur-equivalent cathode materials, and demonstrate the great potential of amorphous MoS3 as such a material for room-temperature Li-S and Na-S batteries. In Li-S batteries, MoS3 exhibits sulfur-like behavior with large reversible specific capacity, excellent cycle life, and the possibility to achieve high areal capacity. Most remarkably, it is also fully cyclable in the carbonate electrolyte under a relatively high temperature of 55 degrees C. MoS3 can also be used as the cathode material of even more challenging Na-S batteries to enable decent capacity and good cycle life. Operando X-ray absorption spectroscopy (XAS) experiments are carried out to track the structural evolution of MoS3. It largely preserves its chain-like structure during repetitive battery cycling without generating any free polysulfide intermediates.},
doi = {10.1073/pnas.1711917114},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 50,
volume = 114,
place = {United States},
year = {Mon Nov 27 00:00:00 EST 2017},
month = {Mon Nov 27 00:00:00 EST 2017}
}

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