Journal
SCIENTIFIC REPORTS
Volume 11, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41598-021-86938-0
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Funding
- JSPS KAKENHI [19K15305, 19K15666, JP18H05513]
- Tohoku University
- Grants-in-Aid for Scientific Research [19K15305, 19K15666] Funding Source: KAKEN
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A new type of calcium battery electrolyte in a mixed solvent with high stability and ionic conductivity has been developed, showing promise for room-temperature rechargeable calcium batteries.
High-energy-density and low-cost calcium (Ca) batteries have been proposed as 'beyond-Li-ion' electrochemical energy storage devices. However, they have seen limited progress due to challenges associated with developing electrolytes showing reductive/oxidative stabilities and high ionic conductivities. This paper describes a calcium monocarborane cluster salt in a mixed solvent as a Ca-battery electrolyte with high anodic stability (up to 4 V vs. Ca2+/Ca), high ionic conductivity (4 mS cm(-1)), and high Coulombic efficiency for Ca plating/stripping at room temperature. The developed electrolyte is a promising candidate for use in room-temperature rechargeable Ca batteries.
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