Amorphous carbon nanofibres inducing high specific capacitance of deposited hydrous ruthenium oxide

被引：28

作者：

Barranco, V. ^{[1
]}

Pico, F. ^{[2
]}

Ibanez, J. ^{[2
]}

Lillo-Rodenas, M. A. ^{[3
]}

Linares-Solano, A. ^{[3
]}

Kimura, M. ^{[4
]}

Oya, A. ^{[5
]}

Rojas, R. M. ^{[1
]}

Amarilla, J. M. ^{[1
]}

Rojo, J. M. ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

[2] CSIC, Ctr Nacl Invest Met, E-28040 Madrid, Spain

[3] Univ Alicante, MCMA, Dept Quim Inorgan, E-03080 Alicante, Spain

[4] Gun Ei Chem Ind Co Ltd, Gunma 370, Japan

[5] Gunma Univ, Fac Engn, Kiryu, Gunma 376, Japan

来源：

ELECTROCHIMICA ACTA | 2009年 / 54卷 / 28期

关键词：

Ruthenium oxide; Carbon nanofibres; Composites; Electrodes; Supercapacitors; ACTIVATED-CARBON; ELECTROCHEMICAL CHARACTERIZATION; COMPOSITE ELECTRODES; MESOPOROUS CARBON; NANOCOMPOSITE ELECTRODES; RUO2; NANOTUBES; SUPERCAPACITORS; NANOPARTICLES; STORAGE;

D O I：

10.1016/j.electacta.2009.07.080

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Composites consisting of ruthenium oxide particles deposited on amorphous carbon nanofibres are prepared by a repetitive impregnation procedure. The choice of amorphous carbon nanofibres as support of amorphous ruthenium oxide leads to composites in which the deposited oxide consists of aggregates of extremely small primary particles (1-1.5 nm-size) and showing high porosity (specific surface area of 450 m(2) g(-1)). This special deposition of the oxide seems to favour: (i) high oxide capacitance (1000 Fg(-1)) at high oxide loadings (up to 20 wt%) and (ii) high capacitance retention (ca. 80% from the initial oxide capacitance) at high current densities (200 mA cm(-2)). Amorphous carbon nanofibres are suitable supports for amorphous ruthenium oxide and perhaps for other amorphous oxides acting as active electrode materials. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：7452 / 7457

页数：6

共 41 条

[1] Application of electrochemically prepared carbon nanofibers in supercapacitors [J].