Low-temperature synthesis of Mn3O4 hollow-tetrakaidecahedrons and their application in electrochemical capacitors

被引：82

作者：

Fang, Ming ^{[1
]}

Tan, Xiaoli ^{[2
]}

Liu, Mao ^{[1
]}

Kang, Shenghong ^{[1
]}

Hu, Xiaoye ^{[1
]}

Zhang, Lide ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Anhui Key Lab Nanomat & Nanostruct, Hefei 230031, Peoples R China

[2] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

来源：

CRYSTENGCOMM | 2011年 / 13卷 / 15期

关键词：

HYDROTHERMAL SYNTHESIS; MANGANESE OXIDE; LASER-ABLATION; KIRKENDALL; NANOPARTICLES; NANOCRYSTALS; NANOSTRUCTURES; FABRICATION; DIFFUSION; NANOTUBES;

D O I：

10.1039/c1ce05337j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mn3O4 hollow-tetrakaidecahedron micro/nano structures are synthesized basing on a structure-shrinkage-assisted Kirkendall effect under the hydrothermal condition. The Mn powders are transformed into Mn(OH)(2) micro tetrakaidecahedron and substantially oxidized to Mn3O4 during the filtration under the flow of oxygen. The Kirkendall effect was proposed to have important responsibility on the formation of voids. Due to the structural shrinkage while transformation, the diffusion of substances from core to shell was found to be accelerated and thus larger holes formed. Electrochemical behavior of such hollow structure electrode was 148 F g(-1). Mn2O3 and Mn5O8 micro hollow tetrakaidecahedron could also be obtained by annealing the corresponding Mn3O4 tetrakaidecahedrons in the air at different temperature.

引用

页码：4915 / 4920

页数：6

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