Self-Assembled 3D Flower-Like Hierarchical β-Ni(OH)2 Hollow Architectures and their In Situ Thermal Conversion to NiO

被引：130

作者：

Zhu, Lu-Ping ^{[1
,2
]}

Liao, Gui-Hong ^{[2
]}

Yang, Yang ^{[2
]}

Xiao, Hong-Mei ^{[2
]}

Wang, Ji-Fen ^{[1
]}

Fu, Shao-Yun ^{[2
]}

机构：

[1] Shanghai Second Polytech Univ, Sch Urban Dev & Environm Engn, Shanghai 201209, Peoples R China

[2] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China

来源：

NANOSCALE RESEARCH LETTERS | 2009年 / 4卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Ni(OH)(2); NiO; Hollow architecture; Hydrothermal synthesis; TEMPLATE-FREE SYNTHESIS; LITHIUM-ION BATTERIES; NICKEL-HYDROXIDE; ELECTROCHEMICAL PERFORMANCE; THIN-FILMS; FABRICATION; SPHERES; OXIDE; NANORIBBONS; SCALE;

D O I：

10.1007/s11671-009-9279-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Three-dimensional (3D) flower-like hierarchical beta-Ni(OH)(2) hollow architectures were synthesized by a facile hydrothermal route. The as-obtained products were well characterized by XRD, SEM, TEM (HRTEM), SAED, and DSC-TGA. It was shown that the 3D flower-like hierarchical beta-Ni(OH)(2) hollow architectures with a diameter of several micrometers are assembled from nanosheets with a thickness of 10-20 nm and a width of 0.5-2.5 mu m. A rational mechanism of formation was proposed on the basis of a range of contrasting experiments. 3D flower-like hierarchical NiO hollow architectures with porous structure were obtained after thermal decomposition at appropriate temperatures. UV-Vis spectra reveal that the band gap of the as-synthesized NiO samples was about 3.57 eV, exhibiting obviously red shift compared with the bulk counterpart.

引用

页码：550 / 557

页数：8