Related Experiment Video
Updated: Jan 7, 2026
05:33
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
22.2K
Making an Ultra "Strong-Tough" Interphase by a Dynamic Elastomer in All-Solid-State Lithium Metal Batteries
Wenya Lei1, Baoyu Sun1, Jiangning Liu1
1State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, Xi'an Jiaotong University, Xi'an 710049, China.
Nano Letters
|December 30, 2025
Summary
Researchers developed a new method for all-solid-state lithium metal batteries by chemically grafting inorganic components with a dynamic elastomer. This enhances battery stability and performance across a wide temperature range.
Area of Science:
- Materials Science
- Electrochemistry
- Polymer Science
Background:
- All-solid-state lithium metal batteries promise high energy density and safety.
- Challenges include poor interfacial compatibility between solid electrolyte particles and lithium metal, hindering stable cycling.
Purpose of the Study:
- To address the incompatibility issue in solid-state batteries.
- To enhance structural integrity and interfacial compatibility using a novel chemical grafting strategy.
Main Methods:
- Chemical grafting of inorganic components with a dynamic elastomer.
- Formation of Si-O-Li covalent linkages and utilization of dynamic hydrogen-bond reconstruction.
- Characterization of tensile strain, ionic conductivity, and cycling stability.
Main Results:
- Achieved an ultrastrong-tough material with a maximum tensile strain of 925%.
- Enhanced ionic conductivity to 4.0 × 10-3 S cm-1 by reducing Li+ transfer tortuosity.
- Demonstrated stable cycling exceeding 3000 hours in symmetric cells at 1.0 mA cm-2.
- Full cells showed wide temperature adaptability (-40 to 80 °C).
Conclusions:
- The developed strategy provides a general solution for overcoming inorganic phase incompatibility in solid-state batteries.
- The chemically grafted elastomer enhances structural integrity and interfacial compatibility, leading to improved battery performance and stability.
