کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7729524 | 1497925 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Conversion of uniform graphene oxide/polypyrrole composites into functionalized 3D carbon nanosheet frameworks with superior supercapacitive and sodium-ion storage properties
ترجمه فارسی عنوان
تبدیل ترکیبات گرافن اکسید / پلیپیرلن یکنواخت به چارچوب نانو ورقه کربن سهبعدی با خواص ذخیره سازی فوق العاده و سدیم یونی
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Two-dimensional (2D) graphene oxide/polypyrrole (GO/PPy) hybrid materials derived from in-situ polymerization are used as precursors for constructing functionalized three-dimensional (3D) porous nitrogen-doped carbon nanosheet frameworks (FT-PNCNFs) through a one-step activation strategy. In the formation process of FT-PNCNFs, PPY is directly converted into hierarchical porous nitrogen-doped carbon layers, while GO is simultaneously reduced to become electrically conductive. The complementary functions of individual components endow the FT-PNCNFs with excellent properties for both supercapacitors (SCs) and sodium ion batteries (SIBs) applications. When tested in symmetrical SC, the FT-PNCNFs demonstrate superior energy storage behaviour. At an extremely high scan rate of 3000 mV sâ1, the cyclic voltammetry (CV) curve retains an inspiring quasi-rectangle shape in KOH solution. Meanwhile, high capacitances (â¼247 F gâ1 at 10 mV sâ1; â¼146 F gâ1 at 3000 mV sâ1) and good cycling stability (â¼95% retention after 8000 cycles) are achieved. In addition, an attractive SIB anode performance could be achieved. The FT-PNCNFs electrode delivers a reversible capacity of 187 mAh gâ1 during 160th cycle at 100 mA gâ1. Its reversible capacity retains 144 mAh gâ1 after extending the number of cycles to 500 at 500 mA gâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 307, 1 March 2016, Pages 17-24
Journal: Journal of Power Sources - Volume 307, 1 March 2016, Pages 17-24
نویسندگان
Huanwen Wang, Yu Zhang, Wenping Sun, Hui Teng Tan, Joseph B. Franklin, Yuanyuan Guo, Haosen Fan, Mani Ulaganathan, Xing-Long Wu, Zhong-Zhen Luo, Srinivasan Madhavi, Qingyu Yan,