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Title: Metal Sulfide‐Decorated Carbon Sponge as a Highly Efficient Electrocatalyst and Absorbant for Polysulfide in High‐Loading Li 2 S Batteries

Abstract

Abstract Owing to its high theoretical specific capacity (1166 mA h g −1 ) and particularly its advantage to be paired with a lithium‐metal‐free anode, lithium sulfide (Li 2 S) is regarded as a much safer cathode for next‐generation advanced lithium–sulfur (Li–S) batteries. However, the low conductivity of Li 2 S and particularly the severe “polysulfide shuttle” of lithium polysulfide (LiPS) dramatically hinder their practical application in Li–S batteries. To address such issues, herein a bifuctional 3D metal sulfide‐decorated carbon sponge (3DTSC), which is constructed by 1D carbon nanowires cross‐linked with 2D graphene nanosheets with high conductivity and polar 0D metal sulfide nanodots with efficient electrocatalytic activity and strong chemical adsorption capability for LiPSs, is presented. Benefiting from the well‐designed multiscale, multidimensional 3D porous nanoarchitecture with high conductivity, and efficient electrocatalytic and absorption ability, the 3DTSC significantly mitigates LiPS shuttle, improves the utilization of Li 2 S, and facilitates the transport of electrons and ions. As a result, even with a high Li 2 S loading of 8 mg cm −2 , the freestanding 3DTSC‐Li 2 S cathode without a polymer binder and metallic current collector delivers outstanding electrochemical performance with a high areal capacity of 8.44 mA h cmmore » −2 .« less

Authors:
 [1];  [2]; ORCiD logo [3]
  1. Materials Science and Engineering Program and Texas Materials Institute The University of Texas at Austin Austin TX 78712 USA, State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 P. R. China
  2. State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 P. R. China
  3. Materials Science and Engineering Program and Texas Materials Institute The University of Texas at Austin Austin TX 78712 USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1505655
Grant/Contract Number:  
DE‐SC0005397
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Name: Advanced Energy Materials Journal Volume: 9 Journal Issue: 20; Journal ID: ISSN 1614-6832
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
Germany
Language:
English

Citation Formats

He, Jiarui, Chen, Yuanfu, and Manthiram, Arumugam. Metal Sulfide‐Decorated Carbon Sponge as a Highly Efficient Electrocatalyst and Absorbant for Polysulfide in High‐Loading Li 2 S Batteries. Germany: N. p., 2019. Web. doi:10.1002/aenm.201900584.
He, Jiarui, Chen, Yuanfu, & Manthiram, Arumugam. Metal Sulfide‐Decorated Carbon Sponge as a Highly Efficient Electrocatalyst and Absorbant for Polysulfide in High‐Loading Li 2 S Batteries. Germany. https://doi.org/10.1002/aenm.201900584
He, Jiarui, Chen, Yuanfu, and Manthiram, Arumugam. 2019. "Metal Sulfide‐Decorated Carbon Sponge as a Highly Efficient Electrocatalyst and Absorbant for Polysulfide in High‐Loading Li 2 S Batteries". Germany. https://doi.org/10.1002/aenm.201900584.
@article{osti_1505655,
title = {Metal Sulfide‐Decorated Carbon Sponge as a Highly Efficient Electrocatalyst and Absorbant for Polysulfide in High‐Loading Li 2 S Batteries},
author = {He, Jiarui and Chen, Yuanfu and Manthiram, Arumugam},
abstractNote = {Abstract Owing to its high theoretical specific capacity (1166 mA h g −1 ) and particularly its advantage to be paired with a lithium‐metal‐free anode, lithium sulfide (Li 2 S) is regarded as a much safer cathode for next‐generation advanced lithium–sulfur (Li–S) batteries. However, the low conductivity of Li 2 S and particularly the severe “polysulfide shuttle” of lithium polysulfide (LiPS) dramatically hinder their practical application in Li–S batteries. To address such issues, herein a bifuctional 3D metal sulfide‐decorated carbon sponge (3DTSC), which is constructed by 1D carbon nanowires cross‐linked with 2D graphene nanosheets with high conductivity and polar 0D metal sulfide nanodots with efficient electrocatalytic activity and strong chemical adsorption capability for LiPSs, is presented. Benefiting from the well‐designed multiscale, multidimensional 3D porous nanoarchitecture with high conductivity, and efficient electrocatalytic and absorption ability, the 3DTSC significantly mitigates LiPS shuttle, improves the utilization of Li 2 S, and facilitates the transport of electrons and ions. As a result, even with a high Li 2 S loading of 8 mg cm −2 , the freestanding 3DTSC‐Li 2 S cathode without a polymer binder and metallic current collector delivers outstanding electrochemical performance with a high areal capacity of 8.44 mA h cm −2 .},
doi = {10.1002/aenm.201900584},
url = {https://www.osti.gov/biblio/1505655}, journal = {Advanced Energy Materials},
issn = {1614-6832},
number = 20,
volume = 9,
place = {Germany},
year = {Mon Apr 08 00:00:00 EDT 2019},
month = {Mon Apr 08 00:00:00 EDT 2019}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1002/aenm.201900584

Citation Metrics:
Cited by: 174 works
Citation information provided by
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Works referenced in this record:

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