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Title: Burning lithium in CS 2 for high-performing compact Li 2S–graphene nanocapsules for Li–S–batteries

Here, tremendous efforts have been made to design the cathode of Li–S batteries to improve their energy density and cycling life. However, challenges remain in achieving fast electronic and ionic transport while accommodating the significant cathode volumetric change, especially for the cathode with a high practical mass loading. Here we report a cathode architecture, which is constructed by burning lithium foils in a CS 2 vapour. The obtained structure features crystalline Li 2S nanoparticles wrapped by few-layer graphene (Li 2S@graphene nanocapsules). Because of the improvement on the volumetric efficiency for accommodating sulfur active species and electrical properties, the cathode design enables promising electrochemical performance. More notably, at a loading of 10 mg Li2S cm –2, the electrode exhibits a high reversible capacity of 1,160 mAh g –1s, namely, an area capacity of 8.1 mAh cm –2. Li 2S@graphene cathode demonstrates a great potential for Li-ion batteries, where the Li 2S@graphene-cathode//graphite-anode cell displays a high capacity of 730 mAh g –1s as well as stable cycle performance.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ; ORCiD logo [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [1] ;  [1] ;  [2] ;  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Oregon State Univ., Corvallis, OR (United States)
  3. The Univ. of Illinois at Chicago, Chicago, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Nature Energy
Additional Journal Information:
Journal Volume: 2; Journal ID: ISSN 2058-7546
Publisher:
Nature Publishing Group
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; graphene; Li2S; lithium sulfur batteries; metallothermic reaction; batteries; electrochemistry; materials for energy and catalysis
OSTI Identifier:
1366717

Tan, Guoqiang, Xu, Rui, Xing, Zhenyu, Yuan, Yifei, Lu, Jun, Wen, Jianguo, Liu, Cong, Ma, Lu, Zhan, Chun, Liu, Qi, Wu, Tianpin, Jian, Zelang, Shahbazian-Yassar, Reza, Ren, Yang, Miller, Dean J., Curtiss, Larry A., Ji, Xiulei, and Amine, Khalil. Burning lithium in CS2 for high-performing compact Li2S–graphene nanocapsules for Li–S–batteries. United States: N. p., Web. doi:10.1038/nenergy.2017.90.
Tan, Guoqiang, Xu, Rui, Xing, Zhenyu, Yuan, Yifei, Lu, Jun, Wen, Jianguo, Liu, Cong, Ma, Lu, Zhan, Chun, Liu, Qi, Wu, Tianpin, Jian, Zelang, Shahbazian-Yassar, Reza, Ren, Yang, Miller, Dean J., Curtiss, Larry A., Ji, Xiulei, & Amine, Khalil. Burning lithium in CS2 for high-performing compact Li2S–graphene nanocapsules for Li–S–batteries. United States. doi:10.1038/nenergy.2017.90.
Tan, Guoqiang, Xu, Rui, Xing, Zhenyu, Yuan, Yifei, Lu, Jun, Wen, Jianguo, Liu, Cong, Ma, Lu, Zhan, Chun, Liu, Qi, Wu, Tianpin, Jian, Zelang, Shahbazian-Yassar, Reza, Ren, Yang, Miller, Dean J., Curtiss, Larry A., Ji, Xiulei, and Amine, Khalil. 2017. "Burning lithium in CS2 for high-performing compact Li2S–graphene nanocapsules for Li–S–batteries". United States. doi:10.1038/nenergy.2017.90. https://www.osti.gov/servlets/purl/1366717.
@article{osti_1366717,
title = {Burning lithium in CS2 for high-performing compact Li2S–graphene nanocapsules for Li–S–batteries},
author = {Tan, Guoqiang and Xu, Rui and Xing, Zhenyu and Yuan, Yifei and Lu, Jun and Wen, Jianguo and Liu, Cong and Ma, Lu and Zhan, Chun and Liu, Qi and Wu, Tianpin and Jian, Zelang and Shahbazian-Yassar, Reza and Ren, Yang and Miller, Dean J. and Curtiss, Larry A. and Ji, Xiulei and Amine, Khalil},
abstractNote = {Here, tremendous efforts have been made to design the cathode of Li–S batteries to improve their energy density and cycling life. However, challenges remain in achieving fast electronic and ionic transport while accommodating the significant cathode volumetric change, especially for the cathode with a high practical mass loading. Here we report a cathode architecture, which is constructed by burning lithium foils in a CS2 vapour. The obtained structure features crystalline Li2S nanoparticles wrapped by few-layer graphene (Li2S@graphene nanocapsules). Because of the improvement on the volumetric efficiency for accommodating sulfur active species and electrical properties, the cathode design enables promising electrochemical performance. More notably, at a loading of 10 mgLi2S cm–2, the electrode exhibits a high reversible capacity of 1,160 mAh g–1s, namely, an area capacity of 8.1 mAh cm–2. Li2S@graphene cathode demonstrates a great potential for Li-ion batteries, where the Li2S@graphene-cathode//graphite-anode cell displays a high capacity of 730 mAh g–1s as well as stable cycle performance.},
doi = {10.1038/nenergy.2017.90},
journal = {Nature Energy},
number = ,
volume = 2,
place = {United States},
year = {2017},
month = {6}
}

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