The Electrochemical Reaction Mechanism of Tin Phosphide with Sodium
Date
2016-04-08
Authors
Obrovac, MN
Dunlap, R. A.
Zheng, Lituo
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Publisher
The Electrochemical Society
Abstract
The sodiation mechanism of Sn4P3 was studied by ex-situ X-ray diffraction and Mössbauer effect spectroscopy. These results show that Sn4P3 is initially amorphized during sodiation, and suggest that upon further sodiation both Sn and P react simultaneously with Na to form Na3P, Na0.6Sn, and Na4Sn4. Upon further sodiation, the Na-Sn phases react with Na to make Na5Sn2 and Na15Sn4. These results are consistent with the behavior of Sn4P3 in Li cells.
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Citation
Lituo Zheng, R.A. Dunlap and M.N. Obrovac, The Electrochemical Reaction Mechanism of Tin Phosphide with Sodium, J. Electrochem. Soc., 163 (2016), A1188-1191.