期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 7, 期 31, 页码 18434-18441出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta04288a
关键词
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资金
- Basque Country Government under the Elkartek 17 program [CICE2017]
- Spanish Ministerio de Economia y Competitividad (MINECO) through the project AffINIty [ENE2016-75242-R]
- MINECO [IJCI-2014-20613, FPDI-2013-17329]
Carbon coated tin phosphide is synthesized by an easily scalable ball milling method. The electrochemical performance of Sn4P3/C electrodes is explored using different combinations of carbonate and ether-based solvents. Our experiments reveal that a remarkable improvement in the specific charge of Sn4P3 anodes can be obtained by using a combination of NaPF6 salt and diethylene glycol dimethyl ether electrolyte. A reversible specific charge of 900 mA h g(-1) and initial coulombic efficiency of around 90% have been achieved. We carefully examine the origin of the improved capacity and cycle life when using glyme-based electrolytes and compare with carbonate electrolytes. Moreover, the reaction mechanism of the Sn based anode is further discussed.
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