Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 25, Pages 13500-13506Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta02131f
Keywords
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Funding
- Welch Foundation [F-1131, F-1436]
- National Science Foundation
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In a 100 cycle test at 0.5 C-rate a negative electrode formed of micro-sized Sn0.9Se0.1 particles retains a specific capacity of 500 mA h g(-1) with a coulombic efficiency of 99.6%. In contrast, a control electrode made with pure Sn retains only a 200 mA h g(-1) capacity with a 98.7% efficiency. The improvement in electrochemical performance of the Sn/Se alloy is attributed to the reduced inactive Se-phase preventing agglomeration of Sn to a size susceptible to particle fracture. The Sn/Se alloy particles are manufacturable, being made by melting the 9 : 1 atomic ratio mixture of Sn and Se, quenching and jet-milling.
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