期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 22, 页码 18710-18719出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b02068
关键词
Li-ion capacitor; TiO2 nanoparticles; carbon nanofibers; mesoporous structure; electrospinning
资金
- National Natural Science Foundation of China [51072013, 51272021, 51142004]
- Natural Science Foundation of Jiangsu Province [BK20140270]
A novel Li-ion capacitor based on an activated carbon cathode and a well-dispersed ultrafine TiO2 nanoparticles embedded in mesoporous carbon nanofibers (TiO2@PCNFs) anode was reported. A series of TiO2@PCNFs anode materials were prepared via a scalable electrospinning method followed by carbonization and a postetching method. The size of TiO2 nanoparticles and the mesoporous structure of the TiO2@PCNFs were tuned by varying amounts of tetraethyl orthosilicate (TEOS) to increase the energy density and power density of the LIC significantly. Such a subtle designed LIC displayed a high energy density of 67.4 Wh kg(-1) at a power density of 75 W kg(-1). Meanwhile, even when the power density was increased to 5 kW kg(-1), the energy density can still maintain 27.5 Wh kg(-1). Moreover, the LIC displayed a high capacitance retention of 80.5% after 10000 cycles at 10 A g(-1). The outstanding electrochemical performance can be contributed to the synergistic effect of the well-dispersed ultrafine TiO2 nanoparticles, the abundant mesoporous structure, and the conductive carbon networks.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据