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Updated: Jun 5, 2026
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
Tailoring the Work Function of Oxyhalide Solid Electrolytes via Sulfur Doping to Boost High-Performance
Rongzeng Jin1, Shaowei Li1, Yile Ding1
1College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China.
Small (Weinheim an Der Bergstrasse, Germany)
|June 4, 2026
Summary
Sulfur doping in solid-state electrolytes enhances ionic conductivity and interfacial stability. This novel LiTaO0.5S0.5Cl4 material improves battery performance and longevity.
Area of Science:
- Materials Science
- Electrochemistry
- Solid-State Chemistry
Background:
- Achieving high ionic conductivity and interfacial stability is critical for solid-state electrolytes.
- Oxidative instability against high-voltage cathodes remains a significant challenge.
Purpose of the Study:
- To develop a sulfur-doped oxohalide solid-state electrolyte for improved battery performance.
- To investigate the impact of sulfur incorporation on ionic conductivity and interfacial stability.
Main Methods:
- Facile high-energy ball milling synthesis of LiTaO0.5S0.5Cl4.
- Experimental characterization and theoretical simulations.
- Fabrication and testing of all-solid-state lithium batteries with LiNi0.8Co0.1Mn0.1O2 cathodes.
Main Results:
- Sulfur doping elevated the work function and ionization energy, enhancing oxidative stability.
- In-situ formation of a protective Ta2O/TaS2 composite layer was observed.
- The solid-state electrolyte exhibited a low Li+ migration barrier and high electronic insulation.
- The all-solid-state Li battery retained 75.5% capacity after 500 cycles at 0.5 C.
Conclusions:
- Anion doping, specifically sulfur incorporation, is an effective strategy for enhancing solid-state electrolyte performance.
- The developed LiTaO0.5S0.5Cl4 electrolyte demonstrates potential for stable high-voltage lithium batteries.
- This approach concurrently improves ionic conductivity and cathode interfacial stability.
