2012 Fiscal Year Final Research Report
Preparation of sulfide-based lithium ion conducting materials by a solution process
| Project/Area Number |
23656403
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TADANAGA Kiyoharu 大阪府立大学, 大学院・工学研究科, 准教授 (90244657)
HAYASHI Akitoshi 大阪府立大学, 大学院・工学研究科, 助教 (10364027)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 液相合成 / リチウムイオン伝導体 / 固体電解質 / 硫化物 / 薄膜 |
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| Research Abstract |
The purpose of the present study is the preparation of sulfide-based lithium ion conductive solid electrolyte from liquid phase. Powders of sulfide-based solid electrolyte (SE) with high lithium concentration were dissolved into N-methylformamide (NMF) and a homogeneous solution was obtained. The NMF solution was dried at 150°C for 3 hours under vacuum to obtain precipitates. The ionic conductivity of the precipitates was 3×10^<-6>S cm^<-1>. Sulfide-based SE was coated onto positive electrode particles by using an NMF solution of SE.The all-solid-state cell using the electrode particles coated with the SE showed good charge-discharge behavior.
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