Journal
THERMOCHIMICA ACTA
Volume 659, Issue -, Pages 34-38Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tca.2017.11.002
Keywords
Energy storage materials; Electrode materials; Phase stabilities; Calorimetry; X-ray diffraction
Funding
- German Research Foundation (DFG) in the Priority Program 1473 WeNDeLIB [Re1261/9-2, Schm588/37-2]
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First results on the constitution of the ternary systems Li-Sn-C and Li-Sn-Si are presented. Extrapolation calculations from the binary boundary systems allow identifying three alloys with key compositions that yield substantial information about the ternary phase diagrams. These alloys were characterized after long-term annealing using X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The XRD and DSC measurements suggest the formation of a solid solution of the isostructural phases Li5Sn2 and Li7Si3 instead of predicted three phase equilibrium in the Li-Sn-Si system. Ternary phases are not observed.
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