| Silica Aerogels Modified SnSb/CNTs as High Cycling
Performance Anode Materials for Lithium Batteries |
Dawei Luo,1,* Fing Lin,1 Wangdong Xiao,1 Chaoyun Luo,1 Zhijun Li1 and Xue Li2
pages : 161-165
DOI : 10.1080/0371750X.2016.1186561 |
| Abstract |
| A silica aerogel/SnSb/CNTs composite was successfully synthesized from silica aerogel
(SA) modification of SnSb/CNTs by a simple sol-gel process and chemical reduction
method. Microstructure, morphology and electrochemical properties of these materials
were characterized by X-ray diffraction, scanning electron microscopy and constant
current charge/discharge tests, respectively. The results showed that the aggregation
of the nanoparticles was greatly reduced by the modification of silica aerogel to SnSb/
CNTs composites. The SA/SnSb/CNTs nanocomposites revealed a high reversible
capacity of 448 mAh.g–1 and stable cyclic retention at 50th cycle. The improvement of
reversible capacity and cyclic performance of the SA/SnSb/CNTs composites is mainly
attributed to the unique structure of SA/SnSb/CNTs, and this structure fully realizes
the complementary advantages of three kinds of materials. Modification of SnSb/CNTs
by the addition of silica aerogel is a potential method to prepare anode material for
lithium rechargeable cells.
[Keywords: Silica aerogel, Carbon nanonube, SnSb alloy, Anode materials, Lithium
ion batteries] |
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