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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
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Li10GeP2S12 solid electrolytes synthesised via liquid-phase methods
Kazuhiro Hikima1, Kaito Ogawa1, Hirotada Gamo1
1Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan. hikima@ee.tut.ac.jp.
Chemical Communications (Cambridge, England)
|May 11, 2023
Summary
Researchers rapidly synthesized lithium germanium phosphorus sulfide (Li10GeP2S12) solid electrolytes using a liquid-phase method. This fast synthesis yields high ionic conductivity, crucial for advanced all-solid-state batteries.
Area of Science:
- Materials Science
- Electrochemistry
- Solid-State Chemistry
Background:
- All-solid-state batteries require high-performance solid electrolytes.
- Conventional synthesis methods for Li10GeP2S12 can be time-consuming.
- Liquid-phase synthesis offers potential for faster material preparation.
Purpose of the Study:
- To develop a rapid synthesis route for Li10GeP2S12 solid electrolytes.
- To achieve high ionic conductivity in synthesized electrolytes.
- To optimize liquid-phase synthesis parameters for efficiency.
Main Methods:
- Suspension synthesis via liquid-phase shaking.
- Solution synthesis utilizing excess sulfur and a mixed solvent (acetonitrile, tetrahydrofuran, ethanol).
- Characterization of ionic conductivity.
Main Results:
- Achieved synthesis of Li10GeP2S12 in as little as 1 day.
- Developed a 7.5-hour synthesis protocol, the fastest reported.
- Obtained an ionic conductivity of 1.6 × 10-3 S cm-1, the highest for liquid-phase synthesis.
Conclusions:
- Rapid, liquid-phase synthesis of Li10GeP2S12 is feasible.
- The developed method yields solid electrolytes with excellent ionic conductivity.
- This approach accelerates the development of materials for all-solid-state batteries.
