Three-dimensional Sn-graphene anode for high-performance lithium-ion batteries

Chundong Wang, Yi Li, Ying San Chui, Qi Hui Wu, Xianfeng Chen, Wenjun Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

Tin (Sn) has been considered as one of the most promising anode materials for high-capacity lithium-ion batteries (LIBs) due to its high energy density, abundance, and environmentally benign nature. However, the problems of fast capacity fading at prolonged cycling and poor rate capacity hinder its practical use. Herein, we report the development of a novel architecture of Sn nanoparticle-decorated three-dimensional (3D) foothill-like graphene as an anode in LIBs. Electrochemical measurements demonstrated that the 3D Sn-graphene anode delivered a reversible capacity of 466 mA h g-1 at a current density of 879 mA g-1 (1 C) after over 4000 cycles and 794 mA h g-1 at 293 mA g-1 (1/3 C) after 400 cycles. The capacity at 1/3 C is over 200% that of conventional graphite anodes, suggesting that the 3D Sn-graphene structure enables a significant improvement in the overall performance of a LIB in aspects of capacity, cycle life, and rate capacity.

Original languageEnglish
Pages (from-to)10599-10604
Number of pages6
JournalNanoscale
Volume5
Issue number21
DOIs
Publication statusPublished - 7 Nov 2013

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