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- Choi, Nam-Soon
- Energy Materials Lab.
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Interfacial architectures based on a binary additive combination for high-performance Sn4P3 anodes in sodium-ion batteries
- Author(s)
- Jang, Jun Yeong, Lee, Yongwon, Kim, Youngjin, Lee, Jeongmin, Lee, Sang-Min, Lee, Kyu Tae, Choi, Nam-Soon
- Issued Date
- 2015-04
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.3, no.16, pp.8332 - 8338
- Abstract
-
We demonstrate the important strategy to design suitable electrolyte systems that make the desirable interfacial structure to allow the reversible sodiation/desodiation of Sn
4 P3 anodes. Our investigation reveals that the remarkable improvement in the electrochemical performance of Sn4 P3 anodes for NIBs is achieved by the combination of fluoroethylene carbonate (FEC) with tris(trimethylsilyl)phosphite (TMSP). We clearly present the unique functions of this binary additive combination to build up a protective surface film on the Sn4 P3 anode against unwanted electrolyte decomposition and to prevent the formation of the Na15 Sn4 phase, which is accompanied by a large volume expansion during the Na insertion (sodiation) process. ⓒ The Royal Society of Chemistry 2015
- Publisher
- ROYAL SOC CHEMISTRYROYAL SOC CHEMISTRY
- ISSN
- 2050-7488
- Keyword
- HIGH-CAPACITY, ELECTRODE MATERIALS, NA-STORAGE, LOW-COST, CARBONATE, CATHODE, NA4FE3(PO4)(2)(P2O7), INSERTION, TIN, FE
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