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.
|Number of pages||7|
|Journal||International Journal of Electrochemical Science|
|Publication status||Published - 1 Jan 2015|
- Lithium ion batteries
- Porous tin anode
- PS template
ASJC Scopus subject areas