Bifunctional Binder with Nucleophilic Lithium Polysulfide Immobilization Ability for High-Loading, High-Thickness Cathodes in Lithium-Sulfur Batteries

Pauline Han, Sheng Heng Chung, Chi Hao Chang, Arumugam Manthiram

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Lithium-sulfur batteries remain a promising next-generation renewable energy storage device due to their high theoretical energy density over the current commercial lithium-ion battery technology. However, to have any practical viability toward reaching the theoretical value, high-loading cathodes with sufficient sulfur content and specifically the effect of nonconductive binders must be investigated. We consider the limitations of conventional binders for high-loading, high-thickness cathodes by integrating a bifunctional binder with a linear polyethylene chain and maleate-capped ends. The linear polymer allows for flexibility within the high-loading cathode whereas the maleate ends improve the polysulfide trapping ability with carbon-sulfur binding. With the strong polysulfide immobilization ability due to the nucleophilic binding, the binder achieves high sulfur loadings of 12 mg cm-2 with a high sulfur content of 80 wt %. The work serves as a proof of concept for exploring the incorporation of polymeric materials into sulfur cathodes to realize practical viability.

Original languageEnglish
Pages (from-to)17393-17399
Number of pages7
JournalACS Applied Materials and Interfaces
Volume11
Issue number19
DOIs
Publication statusPublished - 2019 May 15

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Polysulfides
Lithium
Sulfur
Binders
Cathodes
Polyethylene
Polymers
Energy storage
Polyethylenes
Carbon
Lithium sulfur batteries
polysulfide

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

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abstract = "Lithium-sulfur batteries remain a promising next-generation renewable energy storage device due to their high theoretical energy density over the current commercial lithium-ion battery technology. However, to have any practical viability toward reaching the theoretical value, high-loading cathodes with sufficient sulfur content and specifically the effect of nonconductive binders must be investigated. We consider the limitations of conventional binders for high-loading, high-thickness cathodes by integrating a bifunctional binder with a linear polyethylene chain and maleate-capped ends. The linear polymer allows for flexibility within the high-loading cathode whereas the maleate ends improve the polysulfide trapping ability with carbon-sulfur binding. With the strong polysulfide immobilization ability due to the nucleophilic binding, the binder achieves high sulfur loadings of 12 mg cm-2 with a high sulfur content of 80 wt {\%}. The work serves as a proof of concept for exploring the incorporation of polymeric materials into sulfur cathodes to realize practical viability.",
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Bifunctional Binder with Nucleophilic Lithium Polysulfide Immobilization Ability for High-Loading, High-Thickness Cathodes in Lithium-Sulfur Batteries. / Han, Pauline; Chung, Sheng Heng; Chang, Chi Hao; Manthiram, Arumugam.

In: ACS Applied Materials and Interfaces, Vol. 11, No. 19, 15.05.2019, p. 17393-17399.

Research output: Contribution to journalArticle

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