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Title: Template-assisted assembly of high quality three-dimensional porous Sn anodes for enhanced lithium storage
Authors: Liu, WB
Chen, L
Ye, C
Zhang, SC
Lin, RX
Shi, SQ 
Issue Date: 2015
Source: International journal of electrochemical science, 2015, v. 10, no. 7, p. 5358-5364
Abstract: Three-dimensional (3D) porous tin electrode has been prepared facilely by electrodepositing tin on PS colloidal crystal template followed by etching in tetrahydrofuran to remove the template upon electrodeposition. The resultant porous Sn was characterized by XRD, SEM and electrochemical measurement for its phase, morphology and lithium storage property. The experimental results show that the amount of deposition electric charge plays a crucial role in the uniformity and porosity of the porous Sn and has a key influence on its lithium storage property. As anode materials for Li-ion batteries, the porous Sn with deposition electric charge of 1 Coulomb shows high specific capacity and superior cycling performance, which can be ascribed to the ideal 3D porous architecture of the Sn electrodes acting as buffers to effectively accommodate the large volume change of Sn during repeated lithiation/delithiation processes and providing a favorable diffusion path for Li+. Besides, the porous Sn with deposition electric charge of 1 Coulomb exhibits good capacity retention originating from strengthening the interfacial binding force and restraining tin's shedding from Cu current collector.
Keywords: Electrodeposition
Lithium ion batteries
Porous tin anode
PS template
Publisher: Electrochemical Science Group
Journal: International Journal of Electrochemical Science 
ISSN: 1452-3981
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