The Electrochemical Reaction Mechanism of Tin Phosphide with Sodium. Issue 7 (8th April 2016)

• Record Type: Journal Article
• Authors: Zheng, Lituo; Dunlap, R. A.; Obrovac, M. N.
• Is Part Of: Journal of the Electrochemical Society. Volume 163:Issue 7(2016)
• Page Start: A1188
• Page End: A1191
• Publication Date: 2016-04-08
• Subjects: alloy electrodes -- negative electrodes -- sodium batteries -- tin phosphide; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0401607jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : The sodiation mechanism of Sn4 P3 was studied by ex-situ X-ray diffraction and Mössbauer effect spectroscopy. These results show that Sn4 P3 is initially amorphized during sodiation, and suggest that upon further sodiation both Sn and P react simultaneously with Na to form Na3 P, Na0.6 Sn, and Na4 Sn4 . Upon further sodiation, the Na-Sn phases react with Na to make Na5 Sn2 and Na15 Sn4 . These results are consistent with the behavior of Sn4 P3 in Li cells.