Anchoring alpha-manganese oxide nanocrystallites on multi-walled carbon nanotubes as electrode materials for supercapacitor

被引：52

作者：

Li, Li ^{[1
]}

Qin, Zong-Yi ^{[1
]}

Wang, Ling-Feng ^{[1
]}

Liu, Hong-Jin ^{[1
]}

Zhu, Mei-Fang ^{[1
]}

机构：

[1] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2010年 / 12卷 / 07期

关键词：

Manganese oxide; Carbon nanotube; Hydrothermal synthesis; Nanocomposite; Supercapacitor; HYDROTHERMAL SYNTHESIS; PSEUDOCAPACITANCE PROPERTIES; ELECTROCHEMICAL PROPERTIES; MNO2;

D O I：

10.1007/s11051-010-9980-8

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

The partial coverage of manganese oxide (MnO2) particles was achieved on the surfaces of multi-walled carbon nanotubes (MWCNTs) through a facile hydrothermal process. These particles were demonstrated to be alpha-manganese dioxide (alpha-MnO2) nanocrystallites, and exhibited the appearance of the whisker-shaped crystals with the length of 80-100 nm. In such a configuration, the uncovered CNTs in the nanocomposite acted as a good conductive pathway and the whisker-shaped MnO2 nanocrystallites efficiently increased the contact of the electrolyte with the active materials. Thus, the highest specific capacitance of 550 F g(-1) was achieved using the resulting nanocomposites as the supercapacitor electrode. In addition, the enhancement of the capacity retention was observed, with the nanocomposite losing only 10% of the maximum capacity after 1,500 cycles.

引用

页码：2349 / 2353

页数：5

共 16 条

[1]

A non-aqueous electrolyte-based asymmetric supercapacitor with polymer and metal oxide/multiwalled carbon nanotube electrodes [J].