Porous tin film synthesized by electrodeposition and the electrochemical performance for lithium-ion batteries

Fei Wang, Lin Chen, Chenfang Deng, Haitao Ye, Xuefan Jiang*, Gang Yang

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Porous tin films as anode for lithium-ion batteries are electrodeposited on graphite paper. Homogeneous tin films with significant void space accommodate the volume change during tin lithiation/delithiation. Through adjusting the electrodeposition currents and time, the morphologies and void space of tin films on graphite paper are controllable. At fixed electrodeposition current densities, the prolonged electrodeposition time plays the role in growing big tin particles and resulting the disappearance of void space among tin particles. The increased electrodeposition current plays the role to increase the quantity of tin seeds in thickness of tin film, and the void space among tin particles remains but the thick film limits its electrochemical performance. The tin films electrodeposited at an optimized current densities and for an optimized electrodeposition time, present the best electrochemical performance, because the tin nanoparticles are well dispersed on graphite substrate including void space. The tin film electrodeposited at 0.2 A cm-2 for 2 min shows the capacity of 1.0 mAh cm-2 after 50 charge/discharge cycles. The void space of tin film is very important for the best capacity and cyclic ability. The metallic tin film produced at 0.4 A cm-2 for 3 min remains the uniform and microporous structure after charge/discharge for 50 cycles.

Original languageEnglish
Pages (from-to)330-336
Number of pages7
JournalElectrochimica Acta
Volume149
Early online date22 Oct 2014
DOIs
Publication statusPublished - 10 Dec 2014

Bibliographical note

Funding: European Union Marie Curie FP7-IRSES Project (No: 295208).

Keywords

  • anode materials
  • electrochemical performance
  • electrodeposition
  • lithium-ion batteries
  • tin

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