Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7834772 | Applied Surface Science | 2018 | 32 Pages |
Abstract
Sandwich-structured carbon nanotubes, silicon oxide, and polyaniline (hereafter denoted as CNTs/SiOx/PANI) were prepared by combining a sol-gel method, magnesiothermic reduction at 250â¯Â°C, and chemical oxidative polymerization. The CNTs, SiOx and PANI in the composite was 16â¯wt%, 51â¯wt% and 33â¯wt%, respectively. The CNTs/SiOx/PANI electrodes exhibited excellent cycle and high-rate performance as anodes in Li-ion batteries, including charge/discharge capacities of 1156/1178â¯mAhâ¯gâ1 after 60 cycles at 0.2â¯Aâ¯gâ1 current density and 728/725â¯mAhâ¯gâ1 at 8â¯Aâ¯gâ1 current density. The improvement was due to the synergy between CNTs and PANI. The SiOx scattered on the CNTs core and coated by PANI improved its conductivity and accommodated the volume change during repeated lithiation/delithiation cycles. This simple synthesis provided a scalable route for the large-scale production of CNTs/SiOx/PANI nanostructures, with various applications such as in Li-ion batteries.
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Authors
Hui Liu, Yongjin Zou, Liyan Huang, Hao Yin, Chengqiao Xi, Xin Chen, Hongwei Shentu, Chao Li, Jingjing Zhang, ChunJu Lv, Meiqiang Fan,