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Batteries and Fuel Cells

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Updated: Jul 11, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Permselective Ionic-Shield for High-Performance Lithium-Sulfur Batteries.

Soochan Kim^1,2, Kyeongmin Yang², Kaiwei Yang³

¹Department of Engineering, University of Cambridge, Cambridge, CB3 0FS United Kingdom.

|November 9, 2023

Summary

This summary is machine-generated.

A novel ionic shield effectively blocks polysulfide shuttling in lithium-sulfur batteries (LiSBs), significantly enhancing performance and safety. This breakthrough addresses a key challenge for practical, high-energy-density LiSB development.

Keywords:

functional polymers layer-by-layer lithium−sulfur batteries permselective ionic shield

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Last Updated: Jul 11, 2025

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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Lithium-sulfur batteries (LiSBs) offer high theoretical energy density and low cost, making them promising for next-generation energy storage.
Polysulfide (PS) shuttling remains a critical obstacle, hindering the commercialization and practical application of LiSBs, especially under demanding conditions.

Purpose of the Study:

To develop a permselective ionic shield for LiSB separators to mitigate PS shuttling.
To enhance the performance, safety, and cycle life of LiSBs through improved separator technology.

Main Methods:

Fabrication of a permselective ionic shield on battery separators using ionic complexation and intermolecular bonding of functional polymers.
Electrochemical testing of LiSBs with the developed shield under various cycling conditions, including practical high-energy-density scenarios.
Analysis of battery performance metrics such as discharge capacity, cycle stability, and energy density.

Main Results:

The ionic shield effectively blocked PS shuttling between electrodes, significantly improving LiSB performance.
LiSBs equipped with the shield demonstrated a remarkable discharge capacity of 917 mAh g^-1 after 1000 cycles at 2 C.
Optimal balance for high energy density under practical conditions was investigated, providing insights for system optimization.

Conclusions:

The developed ionic shield is a viable strategy for overcoming PS shuttling in LiSBs.
This advancement contributes to the development of high-performance and safe practical LiSBs.
The study offers crucial insights for the future design of advanced separators for LiSB technology.