Suppressing Shuttle Effect Using Janus Cation Exchange Membrane for High-Performance Lithium-Sulfur Battery Separator

Zhen Li, Yu Han, Junhua Wei, Wenqiang Wang, Tiantian Cao, Shengming Xu, Zhenghe Xu

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

Suppressing the shuttle effect of polysulfide ions to obtain high durability and good electrochemical performance is of great concern in the field of lithium-sulfur batteries. To address this issue, a Janus membrane consisting of an ultrathin dense layer and a robust microporous layer is fabricated using cation exchange resin. Different from the composite membranes made from polyolefin membranes, the multiple layers of the Janus membrane in this study are synchronously generated by one step, getting rid of the additional complex coating processes. Excellent overall performance is obtained by the cooperation of multiple factors. The excellent ionic selectivity of cation exchange resin renders a great suppression of the shuttle effect, endowing the lithium-sulfur battery with high Coulombic efficiency of 92.0-99.0% (LiNO3-free electrolyte). The ultrathin property of a dense layer renders a low ionic resistance, resulting in 60% higher discharge capacity over the entire C-rates (versus the control sample with Celgard 2400 membrane). The robust macroporous layer supports the ultrathin layer to achieve a free-standing property, ensuring the usability of the Janus membrane.
Original languageEnglish (US)
Pages (from-to)44776-44781
Number of pages6
JournalACS Applied Materials and Interfaces
Volume9
Issue number51
DOIs
StatePublished - Dec 27 2017
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)

Fingerprint

Dive into the research topics of 'Suppressing Shuttle Effect Using Janus Cation Exchange Membrane for High-Performance Lithium-Sulfur Battery Separator'. Together they form a unique fingerprint.

Cite this