کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7954175 | 1513767 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
N, S co-doped porous carbon nanospheres with a high cycling stability for sodium ion batteries
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
شیمی مواد
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Developing high-performance and low-cost anode materials is crucial for the practical use of sodium-ion batteries (SIBs) at room-temperature. Porous carbon nanospheres with a uniform diameter for use as SIB anode materials were synthesized by the hydrothermal treatment of glucose to obtain the spheres, and subsequent carbonization and modification with KOH activation and N, S co-doping during or after the activation using thiourea as the N and S sources. Nanospheres doped with N and S after KOH activation have a high initial specific capacity of 527 mAh gâ1 at a current density of 20 mA gâ1 and an excellent cycling stability with a 95.2% capacity retention after 1000 cycles at a high current density of 500 mA gâ1. The capacity retention rate is higher than that of most of the state-of-the-art anode materials for SIBs. This good performance is attributed to the abundant micro-pores, the enlarged interlayer spacing produced by the co-doping, and the high conductivity of the carbon nanospheres.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Carbon Materials - Volume 32, Issue 6, December 2017, Pages 517-526
Journal: New Carbon Materials - Volume 32, Issue 6, December 2017, Pages 517-526
نویسندگان
Hong-wei Zhang, Jia-min Lu, Le Yang, Ming-xiang Hu, Zheng-hong Huang, Rui-tao Lu, Fei-yu Kang,