Preparation and characterization of three-dimensional tin thin-film anode with good cycle performance

Zhijia Du, Shichao Zhang, Tao Jiang, Zhiming Bai

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Three-dimensional tin thin-film anode was prepared by electroless plating tin onto three-dimensional (3D) copper foam (which served as current collector), and characterized physically by SEM, EDS and XRD. Its electrochemical property and mechanism were studied by charge-discharge test, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The SEM and EDS results indicated that tin film with 500 nm thickness was formed over the whole surface of copper branches. The XRD results suggested that a new phase of Cu6Sn5 was formed between copper and tin. Besides the tin microflake structure of 500 nm thickness, the interaction effects of the copper foam and Cu6Sn5 phase formed between copper and tin resulted in good cycle performance with first discharge capacity of 737 mAh g-1, 97% capacity retention after 20 cycles and still 84% after 40 cycles.

Original languageEnglish
Pages (from-to)3537-3541
Number of pages5
JournalElectrochimica Acta
Volume55
Issue number10
DOIs
StatePublished - Apr 1 2010
Externally publishedYes

Funding

This work was supported by the National Natural Science Foundation of China (50574008, 50954005), National Basic Research Program of China (2007CB936502) and National 863 Program (2006AA03Z230, 2008AA03Z208).

FundersFunder number
National 863 Program2006AA03Z230, 2008AA03Z208
National Natural Science Foundation of China50574008, 50954005
National Basic Research Program of China (973 Program)2007CB936502

    Keywords

    • Electroless plating
    • Lithium-ion battery
    • Thin film
    • Three-dimension
    • Tin anode

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