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

Title: Covalently Grafted Polysulfur–Graphene Nanocomposites for Ultrahigh Sulfur-Loading Lithium–Polysulfur Batteries

Abstract

Although lithium–polysulfur (Li–polyS) batteries employing organic polymeric sulfur as a cathode material outperform the lithium–sulfur (Li–S) battery system, the relatively low sulfur loading (<2 mg cm –2) in the current Li–polyS batteries compromises the areal capacity, constraining their practicality. We present here a new cathode active material (a covalently grafted polysulfur–graphene nanocomposite (polySGN)) for ultrahigh-loading Li–polyS batteries. The new cathode active material polySGN offers several advantages: (i) the well-dispersed graphene sheets offer highly electrically conductive pathways for electrons to travel within the polySGN matrix; (ii) the intermediate organosulfide moieties alleviate irreversible sulfide deposition on electrodes; and (iii) the in situ formed coating layer on the cathode-side surface of the polymeric separator further reduces polysulfide migration. In conclusion, the Li–polyS batteries employing polySGN as the cathode active material accomplish the highest sulfur loading (up to 10.5 mg cm –2) and the highest areal capacity (~12 mA h cm –2) reported thus far in the literature.

Authors:
 [1]; ORCiD logo [1]
  1. The Univ. of Texas at Austin, Austin, TX (United States)
Publication Date:
Research Org.:
Univ. of Texas at Austin, Austin, TX (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1487468
Grant/Contract Number:  
EE0007218
Resource Type:
Accepted Manuscript
Journal Name:
ACS Energy Letters
Additional Journal Information:
Journal Volume: 3; Journal Issue: 1; Journal ID: ISSN 2380-8195
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE

Citation Formats

Chang, Chi -Hao, and Manthiram, Arumugam. Covalently Grafted Polysulfur–Graphene Nanocomposites for Ultrahigh Sulfur-Loading Lithium–Polysulfur Batteries. United States: N. p., 2017. Web. doi:10.1021/acsenergylett.7b01031.
Chang, Chi -Hao, & Manthiram, Arumugam. Covalently Grafted Polysulfur–Graphene Nanocomposites for Ultrahigh Sulfur-Loading Lithium–Polysulfur Batteries. United States. doi:10.1021/acsenergylett.7b01031.
Chang, Chi -Hao, and Manthiram, Arumugam. Wed . "Covalently Grafted Polysulfur–Graphene Nanocomposites for Ultrahigh Sulfur-Loading Lithium–Polysulfur Batteries". United States. doi:10.1021/acsenergylett.7b01031. https://www.osti.gov/servlets/purl/1487468.
@article{osti_1487468,
title = {Covalently Grafted Polysulfur–Graphene Nanocomposites for Ultrahigh Sulfur-Loading Lithium–Polysulfur Batteries},
author = {Chang, Chi -Hao and Manthiram, Arumugam},
abstractNote = {Although lithium–polysulfur (Li–polyS) batteries employing organic polymeric sulfur as a cathode material outperform the lithium–sulfur (Li–S) battery system, the relatively low sulfur loading (<2 mg cm–2) in the current Li–polyS batteries compromises the areal capacity, constraining their practicality. We present here a new cathode active material (a covalently grafted polysulfur–graphene nanocomposite (polySGN)) for ultrahigh-loading Li–polyS batteries. The new cathode active material polySGN offers several advantages: (i) the well-dispersed graphene sheets offer highly electrically conductive pathways for electrons to travel within the polySGN matrix; (ii) the intermediate organosulfide moieties alleviate irreversible sulfide deposition on electrodes; and (iii) the in situ formed coating layer on the cathode-side surface of the polymeric separator further reduces polysulfide migration. In conclusion, the Li–polyS batteries employing polySGN as the cathode active material accomplish the highest sulfur loading (up to 10.5 mg cm–2) and the highest areal capacity (~12 mA h cm–2) reported thus far in the literature.},
doi = {10.1021/acsenergylett.7b01031},
journal = {ACS Energy Letters},
number = 1,
volume = 3,
place = {United States},
year = {2017},
month = {11}
}

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

Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

Save / Share: