抄録
<jats:title>Abstract</jats:title> <jats:p>All solid-state fluoride ion batteries are considered to be high energy density and safe energy storage devices. However, the F– ion conductivities of solid electrolytes at room temperature are low (< 10-6 S cm-1), which requires the higher operating temperature of fluoride ion battery such as 420 K or higher. Therefore, the faster F– ion conductors is strongly desired to operate fluoride ion battery at lower or even room temperature. KSbF4 is one of the promising candidates to have a faster F– ion conductivity. To expand F– ion conduction pathways, we doped Rb in KSbF4 and further investigated the compositional dependence of ionic conductivity in K1-xRbxSbF4 system. We found that ionic conductivity strongly depends on the chemical composition and conductivity was maximized at x = 0.15. At room temperature, the F– ion conductivity in the bulk and at the grain boundary of K0.85Rb0.15SbF4 were σbulk = 1.01 × 10-4 S cm-1 and σGB = 4.80 × 10-5 S cm-1, respectively.</jats:p>
収録刊行物
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- Journal of The Electrochemical Society
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Journal of The Electrochemical Society 2023-02-16
The Electrochemical Society
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詳細情報 詳細情報について
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- CRID
- 1360017279853395072
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- ISSN
- 19457111
- 00134651
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- データソース種別
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- Crossref
- KAKEN