Supercapacitor electrode materials of nanostructured hydrous ruthenium oxide deposited by cyclic voltammetry method

Jie Wang; Youlong Xu; Jianhua Ma; Xuanhong Zhang; Linbin Meng; Hongfu Shi; Chunqiang Jiang; Dan Peng

Supercapacitor electrode materials of nanostructured hydrous ruthenium oxide deposited by cyclic voltammetry method

Jie Wang
, Youlong Xu
, Jianhua Ma
, Xuanhong Zhang
, Linbin Meng
, Hongfu Shi
, Chunqiang Jiang
, Dan Peng

Faculty of Electronic and Information Engineering

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Nanostructured hydrous ruthenium oxide (RuO ₂·xH ₂O) was directly deposited on tantalum (Ta) substrates by cyclic voltammetry (CV) technology in RuCl ₃·xH ₂O aqueous solutions. The growth mechanism, revealed by energy dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM) techniques, is that Ru ³⁺ ions are reduced to nanostructured ruthenium (Ru) particles during negative potential scanning, then are oxidized to RuO ₂·xH ₂O granules (also in nanometers) during the following positive scanning. The unique nanometer structure of RuO ₂·xH ₂O, rather than the conventional "mud-cracked" structure, enable itself a high specific capacitance of 730 F·g ^-1 at a scanning rate of 50 mV·s ^-1 and a very fast charging/discharging ability. The specific capacitance is still up to 700 F·g ^-1 when the oxide loading is up to 1.2 mg·cm ^-2. In addition, the capacitance retains about 100% after 100, 000 charging/discharging cycles. All of these indicate that the nanosized RuO ₂·xH ₂O is an excellent electrode material for energy storage and conversion devices, such as supercapacitors.

Original language	English
Pages (from-to)	1467-1471
Number of pages	5
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	41
Issue number	8
State	Published - Aug 2012

Keywords

Cyclic voltammetry
Electrochemical
Hydrous ruthenium oxides
Supercapacitors

Cite this

@article{1fd27335e02641f3b07e572bb9531589,

title = "Supercapacitor electrode materials of nanostructured hydrous ruthenium oxide deposited by cyclic voltammetry method",

abstract = "Nanostructured hydrous ruthenium oxide (RuO 2·xH 2O) was directly deposited on tantalum (Ta) substrates by cyclic voltammetry (CV) technology in RuCl 3·xH 2O aqueous solutions. The growth mechanism, revealed by energy dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM) techniques, is that Ru 3+ ions are reduced to nanostructured ruthenium (Ru) particles during negative potential scanning, then are oxidized to RuO 2·xH 2O granules (also in nanometers) during the following positive scanning. The unique nanometer structure of RuO 2·xH 2O, rather than the conventional {"}mud-cracked{"} structure, enable itself a high specific capacitance of 730 F·g -1 at a scanning rate of 50 mV·s -1 and a very fast charging/discharging ability. The specific capacitance is still up to 700 F·g -1 when the oxide loading is up to 1.2 mg·cm -2. In addition, the capacitance retains about 100\% after 100, 000 charging/discharging cycles. All of these indicate that the nanosized RuO 2·xH 2O is an excellent electrode material for energy storage and conversion devices, such as supercapacitors.",

keywords = "Cyclic voltammetry, Electrochemical, Hydrous ruthenium oxides, Supercapacitors",

author = "Jie Wang and Youlong Xu and Jianhua Ma and Xuanhong Zhang and Linbin Meng and Hongfu Shi and Chunqiang Jiang and Dan Peng",

year = "2012",

month = aug,

language = "英语",

volume = "41",

pages = "1467--1471",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

publisher = "Science Press ",

number = "8",

}

TY - JOUR

T1 - Supercapacitor electrode materials of nanostructured hydrous ruthenium oxide deposited by cyclic voltammetry method

AU - Wang, Jie

AU - Xu, Youlong

AU - Ma, Jianhua

AU - Zhang, Xuanhong

AU - Meng, Linbin

AU - Shi, Hongfu

AU - Jiang, Chunqiang

AU - Peng, Dan

PY - 2012/8

Y1 - 2012/8

N2 - Nanostructured hydrous ruthenium oxide (RuO 2·xH 2O) was directly deposited on tantalum (Ta) substrates by cyclic voltammetry (CV) technology in RuCl 3·xH 2O aqueous solutions. The growth mechanism, revealed by energy dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM) techniques, is that Ru 3+ ions are reduced to nanostructured ruthenium (Ru) particles during negative potential scanning, then are oxidized to RuO 2·xH 2O granules (also in nanometers) during the following positive scanning. The unique nanometer structure of RuO 2·xH 2O, rather than the conventional "mud-cracked" structure, enable itself a high specific capacitance of 730 F·g -1 at a scanning rate of 50 mV·s -1 and a very fast charging/discharging ability. The specific capacitance is still up to 700 F·g -1 when the oxide loading is up to 1.2 mg·cm -2. In addition, the capacitance retains about 100% after 100, 000 charging/discharging cycles. All of these indicate that the nanosized RuO 2·xH 2O is an excellent electrode material for energy storage and conversion devices, such as supercapacitors.

AB - Nanostructured hydrous ruthenium oxide (RuO 2·xH 2O) was directly deposited on tantalum (Ta) substrates by cyclic voltammetry (CV) technology in RuCl 3·xH 2O aqueous solutions. The growth mechanism, revealed by energy dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM) techniques, is that Ru 3+ ions are reduced to nanostructured ruthenium (Ru) particles during negative potential scanning, then are oxidized to RuO 2·xH 2O granules (also in nanometers) during the following positive scanning. The unique nanometer structure of RuO 2·xH 2O, rather than the conventional "mud-cracked" structure, enable itself a high specific capacitance of 730 F·g -1 at a scanning rate of 50 mV·s -1 and a very fast charging/discharging ability. The specific capacitance is still up to 700 F·g -1 when the oxide loading is up to 1.2 mg·cm -2. In addition, the capacitance retains about 100% after 100, 000 charging/discharging cycles. All of these indicate that the nanosized RuO 2·xH 2O is an excellent electrode material for energy storage and conversion devices, such as supercapacitors.

KW - Cyclic voltammetry

KW - Electrochemical

KW - Hydrous ruthenium oxides

KW - Supercapacitors

UR - https://www.scopus.com/pages/publications/84867594882

M3 - 文章

AN - SCOPUS:84867594882

SN - 1002-185X

VL - 41

SP - 1467

EP - 1471

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 8

ER -

Supercapacitor electrode materials of nanostructured hydrous ruthenium oxide deposited by cyclic voltammetry method

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