Skip to main navigation Skip to search Skip to main content

Proton storage mechanism in hydrous ruthenium oxide

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A model of proton transfer and storage in amorphous RuO2.xH 2O was proposed to explain the relationship between the specific capacitance and the structure and water content in RuO2.xH 2O materials. The morphologies and crystalline structures of RuO 2.xH2O annealed at different temperatures were investigated using electrochemical (EC) methods, transmission electron microscope (TEM) and selected area electron diffraction (SAED) techniques, respectively. From EC measurements, it was found that the specific capacitance increased with increasing annealing temperature, and reached the maximum value at a critical temperature, at which the crystalline RuO2.xH 2O started to be formed. It was also found from EC measurement that proton conductivity is low for RuO2.xH2O at steady-state. From the SAED patterns, the structure disorder brought about by proton insertion was obtained from a sample annealed at the critical temperature. From 1H nuclear magnetic resonance (NMR) spectroscopy, it was demonstrated that the activation energy of proton in RuO2.xH2O samples is directly associated with the proton transport and storage ability of these materials.

Original languageEnglish
Title of host publicationECS Transactions - Electrochemistry of Novel Electrode Materials for Energy Conversion and Storage
PublisherElectrochemical Society Inc.
Pages147-157
Number of pages11
Edition25
ISBN (Print)9781605603094
DOIs
StatePublished - 2007
EventElectrochemistry of Novel Electrode Materials for Energy Conversion and Storage - 211th ECS Meeting - Chicago, IL, United States
Duration: May 6 2007May 11 2007

Publication series

NameECS Transactions
Number25
Volume6
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceElectrochemistry of Novel Electrode Materials for Energy Conversion and Storage - 211th ECS Meeting
Country/TerritoryUnited States
CityChicago, IL
Period05/6/0705/11/07

Fingerprint

Dive into the research topics of 'Proton storage mechanism in hydrous ruthenium oxide'. Together they form a unique fingerprint.

Cite this