Facile growth of hollow porous NiO microspheres assembled from nanosheet building blocks and their high performance as a supercapacitor electrode

被引：53

作者：

Fan, Meiqing ^{[1
,2
]}

Ren, Bo ^{[1
,2
]}

Yu, Lei ^{[1
]}

Liu, Qi ^{[1
]}

Wang, Jun ^{[1
,3
]}

Song, Dalei ^{[1
]}

Liu, Jingyuan ^{[1
]}

Jing, Xiaoyan ^{[1
]}

Liu, Lianhe ^{[1
]}

机构：

[1] Harbin Engn Univ, Minist Educ, Key Lab Superlight Mat & Surface Technol, Nangang 150001, Peoples R China

[2] Jilin Vocat Coll Ind & Technol, Dept Appl Chem Engn, Jilin 132013, Jilin, Peoples R China

[3] Harbin Engn Univ, Inst Adv Marine Mat, Nangang 150001, Peoples R China

来源：

CRYSTENGCOMM | 2014年 / 16卷 / 45期

基金：

中国国家自然科学基金;

关键词：

NICKEL FOAM; GRAPHENE; FILMS; OXIDE; NANOSTRUCTURES; NANOPARTICLES; FABRICATION; CARBON;

D O I：

10.1039/c4ce01242a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Self-assembled hollow flowerlike NiO as a promising supercapacitor material has been fabricated by a facile hydrothermal process and the formation mechanism of the flowerlike morphology is investigated. The structure and morphology of the NiO samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) etc. and the surface area of the NiO sample was analyzed by measuring its N-2 adsorption-desorption isotherms. The results indicated that the addition of P123 inhibited the grain growth of NiO, and with the assistance of P123, the nanoparticles assembled into flowers. The electrochemical properties were characterized by cyclic voltammetry, galvanostatic charge/discharge measurements, and electrochemical impedance spectroscopy. The results suggest that the flowerlike NiO has good electrochemical reversibility and displays superior capacitive performance with large capacitance (619 F g(-1)), as well as excellent cycling stability after 1000 cycles.

引用

页码：10389 / 10394

页数：6

共 34 条

[1] Synthesis, characterization, and electrochemical properties of ultrafine β-Ni(OH)2 nanoparticles [J].