کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438748 | 1398187 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of TiNb6O17/C composite with enhanced rate capability for lithium ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
TiNb6O17/C composites were obtained via a facile solid-state reaction with TiO2, Nb2O5 and glucose as the starting materials. The lattice structure and morphology of the composite were investigated by X-ray diffraction, scanning electronic microscopy and transmission electron microscopy. The electrochemical properties were characterized by rate charge/discharge measurements and cyclic voltammetry. Electrochemical measurements demonstrate that the TiNb6O17/C composite exhibits electrochemical properties superior to those of pure TiNb6O17, especially at high current rates. The initial discharge capacities of TiNb6O17/C are 239, 225.1 and 199.8 mAh gâ1 at 1, 5 and 10 C, respectively. Even after 500 cycles at 10 C, the capacity still remains 165.1 mAh gâ1, while the capacity of TiNb6O17 is only 74.8 mAh gâ1. The excellent electrochemical performance of TiNb6O17/C is attributed to the improvement of the electrical conductivity resulting from carbon coating.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 15, 15 November 2016, Pages 16935-16940
Journal: Ceramics International - Volume 42, Issue 15, 15 November 2016, Pages 16935-16940
نویسندگان
Wutao Mao, Keyan Bao, Lin Wang, Guangyin Liu, Haiquan Xie, Ruixue Zhang, Shaolong Zheng, Jiali Guo, Beibei Li, Weibo Wang,