Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 44, Issue -, Pages 66-69Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2014.04.014
Keywords
Hard-carbon; Sodium-ion batteries; Binder; Electrolyte
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Funding
- JSPS through the Funding for NEXT Program
- MEXT program ESIFCRC
- JASRI [2012A1395, 2012B1373, 2013A1399]
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For a non-aqueous sodium-ion battery, a hard-carbon negative electrode with sodium carboxymethyl cellulose (CMC) binder demonstrates the superior reversibility and cycleability in NaPF6 propylene carbonate solution at room temperature to that with ordinary poly(vinylidene difluoride) (PVdF) binder. Furthermore, effects of monofluoroethylene carbonate (FEC) additive remarkably depend on the combination with binders, CMC and PVdF. Surface analyses reveal considerable differences in surface and passivation chemistry which depends on the binders and FEC additive used for the hard-carbon negative electrodes. (C) 2014 Elsevier B.V. All rights reserved.
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