Investigation on Lithiation Mechanism of Interphase Ni3Sn4 Alloy Used as Anode Material for Lithium-Ion Batteries

Xian Hua Hou; She Jun Hu; Hong Wen Yu; Ling Zhi Zhao; Qiang Ru; Chun Lin Tan; Wei Shan Li

doi:10.4028/www.scientific.net/MSF.610-613.506

Paper Titles

CNT-CoO Complex Conductive Agent for the Positive Electrodes of MH/Ni Batteries
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Preparation for the Hollow Nickel Fibres of the Positive Current Collector by Electroless Plating Technique
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Effects of Mg²⁺ Doping on the Properties of LiFePO₄ Synthesized via Hydrothermal Route
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Preparation of PPy/CNT Composite Applications for Supercapacitor Electrode Material
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Investigation on Lithiation Mechanism of Interphase Ni₃Sn₄ Alloy Used as Anode Material for Lithium-Ion Batteries
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PVDF-PAn Co-Polymer with High Permittivity Fabricated by Emulsion Polymerization
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Study on 1/f ^γ Noise Characterization of Metallic Interconnection Electromigration
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Thermodynamics of Oxidation on Pb-Free Solders at Elevated Temperature
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Formation Enthalpy, Free-Energy and Activity Coefficients of Sn-Pb Eutectic Solders
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HomeMaterials Science ForumMaterials Science Forum Vols. 610-613Investigation on Lithiation Mechanism of...

Investigation on Lithiation Mechanism of Interphase Ni₃Sn₄ Alloy Used as Anode Material for Lithium-Ion Batteries

Abstract:

Sn-based anode materials have poor cycling performance due to mechanical fatigue caused by volume expansion during lithium insertion and extraction processes. In this work, the mechanism of lithium insertion/extraction in the Ni3Sn4 alloy electrode is investigated using the first-principle plane-wave pseudopotential and experimnetal method. The calculated results indicate that the Ni3Sn4 alloy phase has relatively minor expansion ratio and fluctuating electrochemical potential, which the tendency is consistent with the experimental result. On the other hand, the Sn-Ni alloy thin films with different tin content are prepared by electrodepostion on copper as an anode for lithium-ion batteries. The structural and electrochemical characteristics of Sn-Ni alloy are examined using X-ray diffraction (XRD) and repeated constant current charge/discharge (CC). The results show Tthheat Ni3Sn4 alloy phase has best cyclic stability during the lithium insertion and extraction processes.