Highly ordered mesoporous NiO anode material for lithium ion batteries with an excellent electrochemical performance

被引:424
作者
Liu, Hao [3 ]
Wang, Guoxiu [1 ]
Liu, Jian [3 ]
Qiao, Shizhang [3 ]
Ahn, Hyojun [2 ]
机构
[1] Univ Technol Sydney, Dept Chem & Forens Sci, Sydney, NSW 2007, Australia
[2] Gyeongsang Natl Univ, Sch Mat Sci & Engn, Jinju 660701, Gyeongnam, South Korea
[3] Univ Queensland, Australian Inst Bioengn & Nanotechnol, ARC Ctr Excellence Funct Nanomat, Brisbane, Qld 4072, Australia
基金
澳大利亚研究理事会;
关键词
HIGH-POWER; NEGATIVE ELECTRODES; NANOWIRE; STORAGE; OXIDE; NANOTUBES; CO3O4; CATHODE;
D O I
10.1039/c0jm03132a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this work, we have synthesized highly ordered mesoporous NiO materials by a nanocasting method using mesoporous silica KIT-6 as the hard templates. Mesoporous NiO particles were characterized by small angle X-ray diffraction (XRD), nitrogen adsorption/desorption, and transmission electron microscopy (TEM). The results demonstrated that the as-prepared mesoporous NiO had an ordered Ia3d symmetric mesostructure, with a high surface area of 96 m(2)/g. Mesoporous NiO materials were tested as an anode material for lithium ion batteries, exhibiting much lower activation energy (20.75 kJ mol(-1)) compared to the bulk NiO (45.02 kJ mol(-1)). We found that the mesoporous NiO electrode has higher lithium intercalation kinetics than its bulk counterpart. The specific capacity of mesoporous NiO after 50 cycles was maintained 680 mAh/g at 0.1 C, which was much higher than that of the commercial bulk NiO (188 mAh/g). Furthermore, at a high rate of 2C, the discharge capacity of mesoporous NiO was as high as 515 mAh/g, demonstrating the potential to be used for high power lithium ion batteries.
引用
收藏
页码:3046 / 3052
页数:7
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