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The Cu-Li-Sn Phase Diagram: Isopleths, Liquidus Projection and Reaction Scheme
Siegfried Fürtauer1, Hans Flandorfer1
1Institute of Inorganic Chemistry - Functional Materials, University of Vienna, Währingerstraße 42, A-1090, Vienna, Austria.
Plos One
|October 28, 2016
Summary
This study details the Cu-Li-Sn phase diagram, revealing eight ternary and 14 binary phases. These findings are crucial for developing advanced anode materials for high-power lithium-ion batteries.
Area of Science:
- Materials Science
- Metallurgy
- Physical Chemistry
Background:
- Phase diagrams are essential for understanding material behavior and designing new alloys.
- Accurate phase diagrams guide the development of materials for specific applications, such as energy storage.
Purpose of the Study:
- To construct and comprehensively investigate the Cu-Li-Sn ternary phase diagram.
- To provide critical data for thermodynamic optimization and material design.
Main Methods:
- Experimental determination using X-ray Diffraction (XRD) and Differential Thermal Analysis (DTA).
- Analysis of 60 different alloy compositions to map phase equilibria.
- Illustration of reactions using Scheil-Schulz reaction schemes and liquidus projections.
Main Results:
- Construction of the Cu-Li-Sn phase diagram with eight ternary and 14 binary solid phases.
- Identification of 44 invariant ternary reactions and presentation of phase equilibria across nine isopleths.
- Discovery of a stable ternary miscibility gap, confirming previous modeling predictions.
Conclusions:
- The comprehensive Cu-Li-Sn phase diagram provides essential data for materials science and engineering.
- This research facilitates the development of novel anode materials for high-power lithium-ion batteries.
- The established phase equilibria serve as a vital input for material databases and thermodynamic optimizations.
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