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Updated: Jun 20, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Interfacial Plasticization Strategy Enabling a Long-Cycle-Life Solid-State Lithium Metal Battery.

Zhihao Zhang¹, Ming Zhang¹, Jintian Wu¹

¹School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, China.

Small (Weinheim an Der Bergstrasse, Germany)

|November 23, 2023

Summary

This summary is machine-generated.

This study introduces an interfacial plasticization strategy using succinonitrile (SN) in polyacrylonitrile (PAN)-based composite polymer electrolytes (CPEs) for solid-state batteries (SSBs). This enhances ionic conductivity and stability, enabling long-life battery cycling.

Keywords:

composite polymer electrolytes interfacial plasticization polyacrylonitrile solid‐state batteries succinonitrile

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Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Published on: January 20, 2023

Area of Science:

Materials Science
Electrochemistry
Polymer Science

Background:

Solid-state batteries (SSBs) face challenges with limited ionic conductivity and unstable interfaces due to poor solid-solid contact.
Developing stable and conductive interfaces is crucial for advancing SSB technology.

Purpose of the Study:

To propose an interfacial plasticization strategy for composite polymer electrolytes (CPEs) in SSBs.
To improve ionic conductivity, interfacial stability, and dendrite suppression in SSBs.

Main Methods:

Introducing a succinonitrile (SN)-based plastic curing agent into the polyacrylonitrile (PAN)-based CPE interface.
Creating a gradient modulus structure within the CPE to plasticize the surface while maintaining internal modulus.
Characterizing the electrochemical performance of the modified CPE (SF-CPE) in Li-Li symmetric cells and full cells (LiFePO4-Li and LiCoO2-Li).

Main Results:

The succinonitrile (SN) plasticizes the polyacrylonitrile (PAN) at the interface, reducing crystallinity and increasing amorphous regions for enhanced Li+ transport.
The gradient modulus structure ensures intimate interfacial contact and suppresses lithium dendrite growth.
The interfacial plasticized CPE (SF-CPE) achieved high ionic conductivity (4.8 × 10^-4 S cm^-1) and Li+ transference number (0.61).
Demonstrated excellent cycling stability in Li-Li symmetric cells (1000 h) and full cells (LiFePO4-Li: 86.1% retention after 1000 cycles).

Conclusions:

The interfacial plasticization strategy effectively addresses the limitations of SSBs by improving ionic conductivity and interfacial stability.
The developed SF-CPE offers a promising pathway for fabricating long-life and high-performance solid-state batteries.