کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7962793 | 1513989 | 2018 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sulfur doped ultra-thin anatase TiO2 nanosheets/graphene nanocomposite for high-performance pseudocapacitive sodium storage
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
فناوری سوخت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Sulfur doped ultra-thin anatase TiO2 nanosheets/graphene nanocomposite for high-performance pseudocapacitive sodium storage Sulfur doped ultra-thin anatase TiO2 nanosheets/graphene nanocomposite for high-performance pseudocapacitive sodium storage](/preview/png/7962793.png)
چکیده انگلیسی
Sodium-ion battery (NIBs) has emerged as a promising low-cost option for large-scale electricity storage applications compared with traditional lithium-ion battery. However, developing anode materials with robust rate capability and long cycle life is even more challenging for sodium-based energy storage devices than lithium-based ones. Here, we report a unique nanocomposite architecture of sulfur doped atomically thin, micro-sized anatase TiO2 nanosheets anchored onto graphene sheets (S-TiO2/rGO). The high surface area of two-dimensional structure, graphene preservation networks and rich Ti3+/oxygen vacancy defects induced by sulfur doping endow S-TiO2/rGO electrode with excellent reversibility and fast kinetics. The electrode delivers a high capacity of 153Â mAh/g at a rate of 20Â C (6700Â mA/g) without evident capacity loss even after 8000 cycles. Further kinetics analysis reveals that the high-rate performance stems from pseudocapacitive process rendered by the 2D-morphology and vacancy-rich TiO2 nanosheets.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Storage Materials - Volume 12, May 2018, Pages 37-43
Journal: Energy Storage Materials - Volume 12, May 2018, Pages 37-43
نویسندگان
Haochuan Zhang, Yu Jiang, Zhenyu Qi, Xiongwu Zhong, Yan Yu,