Nanospace-controlled SnO2/Nanoporous Carbon Composite as a High-performance Anode for Sodium Ion Batteries

被引：12
|
作者：
Oro, Shinji [1 ]
Urita, Koki [1 ]
Moriguchi, Isamu [1 ]
机构：
[1] Nagasaki Univ, Grad Sch Engn, 1-14 Bunkyo Machi, Nagasaki 8528521, Japan
来源：
CHEMISTRY LETTERS | 2017年 / 46卷 / 04期
关键词：
Sodium ion battery; Nanoporous carbon; SnO2; nanocrystallite; HIGH-CAPACITY ANODE; SNO2; NANOCRYSTALLITES; POROUS CARBON; OXIDE; ELECTRODES;
D O I：
10.1246/cl.161185
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The electrochemical performance of SnO2 as an anode material for sodium ion batteries was greatly enhanced by embedding SnO2 nanocrystallites preferentially in the porous carbon. The appropriate loading of SnO2 (e.g., 62 wt%) so as to provide enough reaction space resulted in a high capacity retention of 84% in the 30th cycle and a high capacity of 387mAh g(-1). It was demonstrated by electrochemical impedance spectroscopy that the enhancement was due to lowering of the charge-transfer resistance in the nanospace-controlled composite.
引用
收藏
页码：502 / 505
页数：4
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