One Step Synthesis of Uniform SnO2Electrode by UV Curing Technology toward Enhanced Lithium-Ion Storage.
A uniform anode material composed of ultrasmall tin oxide (SnO2) nanoparticles with an excellent lithium-ion (Li-ion) storage performance is obtained for the first time through one step UV curing technology. The diameter of ∼3 nm-sized SnO2particles is uniformly dispersed in the styrylpyridinium (SbQ) polymer because of its photo-cross-linking property. The in situ cross-linking of SbQ polymer not only assist synthesis of uniform ultrasmall SnO2, but act as a strong adhesion binder on SnO2nanoparticles, thereby effectively accommodating the volume expansion of SnO2anodes during cycling process. The uniform electrode exhibits substantially higher specific capacity and longer cycling stability compared with the SnO2nanoparticles electrodes treated by traditional PVDF-mixing method. A stable specific capacity of 572.5 mA h g-1of the SnO2electrode derived from UV curing technology is obtained at a current density of 0.2 C (156.2 mA g-1) after 150 cycles. Even at high rate of 5 C (3905 mA g-1), the electrode still demonstrates specific capacity of 440.2 mA h g-1. Therefore, the scalable and low-cost synthetic approach described herein can readily be extended to other nanomaterials electrodes to improve their lithium-storage properties.
College of Chemistry and Chemical Engineering, Inner Mongolia University , Hohhot 010021, P.R. China.|Key Lab of Theory and Technology for Advanced Batteries Materials, College of Engineering, Peking University , Beijing 100871, P.R. China.
Hang
H
Wei
Key Lab of Theory and Technology for Advanced Batteries Materials, College of Engineering, Peking University , Beijing 100871, P.R. China.
Zhonghong
Z
Xia
Key Lab of Theory and Technology for Advanced Batteries Materials, College of Engineering, Peking University , Beijing 100871, P.R. China.
Dingguo
http://orcid.org/0000-0003-2191-236X
D
Xia
SnO2 electrode; UV curing technology; lithium ion battery; one step; ultrafine nanoparticle