title: High-rate amorphous SnO2 nanomembrane anodes for Li-ion batteries with a long cycling life.
abstract: Amorphous SnO2 nanomembranes as anodes for lithium ion batteries demonstrate a long cycling life of 1000 cycles at 1600 mA g(-1) with a high reversible capacity of 854 mA h g(-1) and high rate capability up to 40 A g(-1). The superior performance is because of the structural features of the amorphous SnO2 nanomembranes. The nanoscale thickness provides considerably reduced diffusion paths for Li(+). The amorphous structure can accommodate the strain of lithiation/delithiation, especially during the initial lithiation. More importantly, the mechanical feature of deformation can buffer the strain of repeated lithiation/delithiation, thus putting off pulverization. In addition, the two-dimensional transport pathways in between nanomembranes make the pseudo-capacitance more prominent. The encouraging results demonstrate the significant potential of nanomembranes for high power batteries.
authors.affiliation: Institute for Integrative Nanosciences, IFW-Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany. xianghong.liu@ifw-dresden.de.
authors.forename: Xianghong
authors.initials: X
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.forename: Wenping
authors.initials: W
authors.lastname: Si
authors.forename: Lixia
authors.initials: L
authors.lastname: Xi
authors.forename: Steffen
authors.initials: S
authors.lastname: Oswald
authors.forename: Chenglin
authors.initials: C
authors.lastname: Yan
authors.forename: Oliver G
authors.initials: OG
authors.lastname: Schmidt