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  • Flexible free-standing graphene/SnO₂ nanocomposites paper for Li-ion battery.

Flexible free-standing graphene/SnO₂ nanocomposites paper for Li-ion battery.

ACS applied materials & interfaces (2012-10-24)
Junfei Liang, Yue Zhao, Lin Guo, Lidong Li
ABSTRACT

A flexible free-standing graphene/SnO₂ nanocomposites paper (GSP) was prepared by coupling a simple filtration method and a thermal reduction together for the first time. Compared with the pure SnO₂ nanoparticles, the GSP exhibited a better cycling stability, because the graphene with high mechanical strength and elasticity can work as a buffer to prevent the volume expansion and contraction of SnO₂ nanoparticles during the Li⁺ insertion/extraction process. Meanwhile, compared with single graphene paper, the GSP showed a higher capacity because of the hybridizing with higher capacity SnO₂ nanoparticles. The excellent electrochemical performance of the GSP as an anode material in Li-ion battery was obtained. The as-prepared GSP shows a great potential for flexible Li-ion batteries.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Tin(IV) oxide, nanopowder, ≤100 nm avg. part. size
Sigma-Aldrich
Tin(IV) oxide, ≥99.99% trace metals basis
Sigma-Aldrich
Tin(IV) oxide, −325 mesh, 99.9% trace metals basis