کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5148614 | 1497869 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-performance lithium storage based on the synergy of atomic-thickness nanosheets of TiO2(B) and ultrafine Co3O4 nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Lithium ion batteries (LIBs) are critical constituents of modern day vehicular and telecommunication technologies. Transition metal oxides and their composites have been extensively studied as potential electrode materials for LIBs. However, inefficient lithiation, poor electrical conductivity, and drastic volume change during cycling result in low reversible capacity and rapid capacity fading, and thus hinder the practical applications of those electrodes. In this work, we report a facile synthesis of a novel hierarchical composites, which consist of ultrafine Co3O4 nanoparticles uniformly dispersed on TiO2(B) nanosheets with atomic thickness (Co3O4 NPs@TiO2(B) NSs). When tested as anode material for LIBs, the Co3O4 NPs@TiO2(B) NSs sample with optimized composition shows a reversible capacity of â¼677.3Â mAhgâ1 after 80 cycles at a current density of 100Â mAgâ1. A capacity of 386.2Â mAhgâ1 is still achieved at 1000Â mAgâ1. The synergistic effect of ultrafine Co3O4 nanoparticles and atomic-thickness TiO2(B) nanosheets is responsible for the enhanced electrochemical performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 363, 30 September 2017, Pages 110-116
Journal: Journal of Power Sources - Volume 363, 30 September 2017, Pages 110-116
نویسندگان
Jawayria Mujtaba, Hongyu Sun, Yanyan Zhao, Guolei Xiang, Shengming Xu, Jing Zhu,