期刊
NANO-MICRO LETTERS
卷 10, 期 2, 页码 -出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s40820-017-0172-2
关键词
SnO2; Nanostructures; Anode; Li-ion battery; Na-ion battery
资金
- National Natural Science Foundation of China [51302079]
- National Natural Science Foundation of Hunan Province [2017JJ1008]
It is urgent to solve the problems of the dramatic volume expansion and pulverization of SnO2 anodes during cycling process in battery systems. To address this issue, we design a hybrid structure of N-doped carbon fibers@SnO2 nanoflowers (NC@SnO2) to overcome it in this work. The hybrid NC@SnO2 is synthesized through the hydrothermal growth of SnO2 nanoflowers on the surface of N-doped carbon fibers obtained by electrospinning. The NC is introduced not only to provide a support framework in guiding the growth of the SnO2 nanoflowers and prevent the flower-like structures from agglomeration, but also serve as a conductive network to accelerate electronic transmission along one-dimensional structure effectively. When the hybrid NC@SnO2 was served as anode, it exhibits a high discharge capacity of 750 mAh g(-1) at 1 A g(-1) after 100 cycles in Li-ion battery and 270 mAh g(-1) at 100 mA g(-1) for 100 cycles in Na-ion battery, respectively. [GRAPHICS]
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