Achieving high capacity retention in lithium-sulfur batteries with an aqueous binder

Yan-Qiu Lu; Jun-Tao Li; Xin-Xing Peng; Tao Zhang; Ya-Ping Deng; Zhan-Yu Wu; Li Deng; Ling Huang; Xiao-Dong Zhou; Shi-Gang Sun

doi:10.1016/j.elecom.2016.09.004

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Achieving high capacity retention in lithium-sulfur batteries with an aqueous binder

Journal article

Peer reviewed

Achieving high capacity retention in lithium-sulfur batteries with an aqueous binder

Yan-Qiu Lu, Jun-Tao Li, Xin-Xing Peng, Tao Zhang, Ya-Ping Deng, Zhan-Yu Wu, Li Deng, Ling Huang, Xiao-Dong Zhou and Shi-Gang Sun

Electrochemistry communications, Vol.72, pp.79-82

11/2016

DOI: https://doi.org/10.1016/j.elecom.2016.09.004

Abstract

Cycleability

Aqueous binder

Lithium-sulfur batteries

Guar gum

In this article, we report improved capacity retention in lithium-sulfur (Li-S) batteries by replacing the conventional Polyvinylidene fluoride (PVDF) binder with inexpensive guar gum (GG). The S/GG cathode exhibits a discharge capacity of 777mAhg−1 at 0.2 C after 150cycles, in comparison to 491mAhg−1 of S/PVDF cathode. FTIR results show that there is interaction between GG and sulfur species. This interaction is potentially capable of maintaining the active sulfur species, which could to a certain extent inhibit shuttling effect. What's more, GG shows limited dissolving and swelling capacity in the electrolyte and higher viscosity and hardness than those of PVDF. Such properties of GG provide the electrode with appropriate extensibility to alleviate the negative impact from the volume variation.

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Title: Achieving high capacity retention in lithium-sulfur batteries with an aqueous binder
Creators: Yan-Qiu Lu - College of Energy, Xiamen University, Xiamen 361005, China
Jun-Tao Li - College of Energy, Xiamen University, Xiamen 361005, China
Xin-Xing Peng - State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
Tao Zhang - College of Energy, Xiamen University, Xiamen 361005, China
Ya-Ping Deng - College of Energy, Xiamen University, Xiamen 361005, China
Zhan-Yu Wu - College of Energy, Xiamen University, Xiamen 361005, China
Li Deng - College of Energy, Xiamen University, Xiamen 361005, China
Ling Huang - State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
Xiao-Dong Zhou - Department of Chemical Engineering, University of South Carolina, Columbia 29208, USA
Shi-Gang Sun - State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
Publication Details: Electrochemistry communications, Vol.72, pp.79-82
Publisher: Elsevier B.V
Identifiers: 9923972828301921
Academic Unit: Department of Chemistry
Language: English
Resource Type: Journal article

Achieving high capacity retention in lithium-sulfur batteries with an aqueous binder

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