XRD and electrochemical measurements of RuO2 powder treated by using a mechanical grinding method

Takayuki Abe; Sachio Inoue; Kuniaki Watanabe

doi:10.1016/S0925-8388(03)00045-8

XRD and electrochemical measurements of RuO₂ powder treated by using a mechanical grinding method

Takayuki Abe^*, Sachio Inoue, Kuniaki Watanabe

^*Corresponding author for this work

Hydrogen Isotope Research Center, Organization for Promotion of Research

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

18 Scopus citations

Abstract

Atomization, crystallinity, and electrochemical characteristics of powdery RuO₂ treated by mechanical grinding (MG) were examined. XRD analysis, N₂ adsorption/desorption measurements, and TEM observations showed that MG generated isotropic and rapid atomization of RuO₂ particles in the initial stage of treatment (up to 190 h). Further MG resulted in gentle atomization with anisotropy in a and c axial directions. Electrochemical measurements showed that the specific capacitance of treated RuO₂ increased with increasing MG time. By the MG 400 h treatment, the specific capacitance was 132 F/g, which was about 80-times greater than that of the untreated sample. This increment was attributed to the increase in the specific surface area of RuO₂ powder owing to the isotropic atomization caused by MG treatment.

Original language	English
Pages (from-to)	177-181
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	358
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(03)00045-8
State	Published - 2003/08/25

Keywords

MG treatment
RuO
Supercapacitor

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0925-8388(03)00045-8

Cite this

@article{f5c36e914a9f431e88bf607c8080de0a,

title = "XRD and electrochemical measurements of RuO2 powder treated by using a mechanical grinding method",

abstract = "Atomization, crystallinity, and electrochemical characteristics of powdery RuO2 treated by mechanical grinding (MG) were examined. XRD analysis, N2 adsorption/desorption measurements, and TEM observations showed that MG generated isotropic and rapid atomization of RuO2 particles in the initial stage of treatment (up to 190 h). Further MG resulted in gentle atomization with anisotropy in a and c axial directions. Electrochemical measurements showed that the specific capacitance of treated RuO2 increased with increasing MG time. By the MG 400 h treatment, the specific capacitance was 132 F/g, which was about 80-times greater than that of the untreated sample. This increment was attributed to the increase in the specific surface area of RuO2 powder owing to the isotropic atomization caused by MG treatment.",

keywords = "MG treatment, RuO, Supercapacitor",

author = "Takayuki Abe and Sachio Inoue and Kuniaki Watanabe",

note = "Funding Information: This work was partially supported by a Grant-in-Aid for Scientific Research on Priority Areas A of {\textquoteleft}New Protium Function Materials{\textquoteright} from the Ministry of Education, Science, Sports and Culture of Japan. The authors thank Yuwasa Ionics Co. for measurements of specific surface areas of RuO 2 samples.",

year = "2003",

month = aug,

day = "25",

doi = "10.1016/S0925-8388(03)00045-8",

language = "英語",

volume = "358",

pages = "177--181",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - XRD and electrochemical measurements of RuO2 powder treated by using a mechanical grinding method

AU - Abe, Takayuki

AU - Inoue, Sachio

AU - Watanabe, Kuniaki

N1 - Funding Information: This work was partially supported by a Grant-in-Aid for Scientific Research on Priority Areas A of ‘New Protium Function Materials’ from the Ministry of Education, Science, Sports and Culture of Japan. The authors thank Yuwasa Ionics Co. for measurements of specific surface areas of RuO 2 samples.

PY - 2003/8/25

Y1 - 2003/8/25

N2 - Atomization, crystallinity, and electrochemical characteristics of powdery RuO2 treated by mechanical grinding (MG) were examined. XRD analysis, N2 adsorption/desorption measurements, and TEM observations showed that MG generated isotropic and rapid atomization of RuO2 particles in the initial stage of treatment (up to 190 h). Further MG resulted in gentle atomization with anisotropy in a and c axial directions. Electrochemical measurements showed that the specific capacitance of treated RuO2 increased with increasing MG time. By the MG 400 h treatment, the specific capacitance was 132 F/g, which was about 80-times greater than that of the untreated sample. This increment was attributed to the increase in the specific surface area of RuO2 powder owing to the isotropic atomization caused by MG treatment.

AB - Atomization, crystallinity, and electrochemical characteristics of powdery RuO2 treated by mechanical grinding (MG) were examined. XRD analysis, N2 adsorption/desorption measurements, and TEM observations showed that MG generated isotropic and rapid atomization of RuO2 particles in the initial stage of treatment (up to 190 h). Further MG resulted in gentle atomization with anisotropy in a and c axial directions. Electrochemical measurements showed that the specific capacitance of treated RuO2 increased with increasing MG time. By the MG 400 h treatment, the specific capacitance was 132 F/g, which was about 80-times greater than that of the untreated sample. This increment was attributed to the increase in the specific surface area of RuO2 powder owing to the isotropic atomization caused by MG treatment.

KW - MG treatment

KW - RuO

KW - Supercapacitor

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U2 - 10.1016/S0925-8388(03)00045-8

DO - 10.1016/S0925-8388(03)00045-8

M3 - 学術論文

AN - SCOPUS:0041942617

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VL - 358

SP - 177

EP - 181

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -