NDLI: Characteristics of thin film supercapacitor with ruthenium oxide electrode and Ta$_{2}$O$

Content Provider	SpringerLink
Author	Lee, Man Jong Kim, Joo Sun Choi, Sun Hee Lee, Jae Joon Kim, Soo Ho Jee, Seung Hyun Yoon, Young Soo
Copyright Year	2006
Abstract	We report findings related to a solid-state thin film supercapacitors (TFSCs) fabricated with ruthenium oxide electrodes and hydrogen doped tantalum oxide electrolyte in order to investigate a feasibility for solid oxide thin film electrolyte in all solid state micropower sources with hydrogen conducting electrolyte. The TFSCs in this study has a cell structure of RuO$_{2}$/Ta$_{2}$O$_{5}$/RuO$_{2}$/Pt. Radio frequency, off-axis r.f. sputtering deposition of a Ta$_{2}$O$_{5}$ thin film was performed on the bottom amorphous RuO$_{2}$ electrode which was deposited by an on-axis direct current reactive sputtering, within hydrogen atmosphere to enhance the concentration of mobile proton (H$^{+}$) ions. Scanning electron microscopy (SEM) measurements reveal that the RuO$_{2}$/Ta$_{2}$O$_{5}$/RuO$_{2}$ hetero-interfaces have no inter-diffusion problems. Room temperature charge–discharge measurements with constant current clearly reveal typical supercapacitor behavior. Also, owing to the fast diffusion of H$^{+}$ ions within the Ta$_{2}$O$_{5}$ lattice without any structural deterioration, the capacitance per volume of RuO$_{2}$/Ta$_{2}$O$_{5}$/RuO$_{2}$/Pt TFSCs was maintained to be constant during above 800 cycles. This result indicated that the solid oxide thin film has possibility as the solid proton conducting electrolyte for all solid state micropower sources.
Starting Page	639
Ending Page	643
Page Count	5
File Format	PDF
ISSN	13853449
Journal	Journal of Electroceramics
Volume Number	17
Issue Number	2-4
e-ISSN	15738663
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-01-01
Publisher Place	Boston
Access Restriction	Subscribed
Subject Keyword	Proton conducting electrolyte Ruthenium oxide Tantalum oxide thin film Solid electrolyte Supercapacitor Electrochemistry Optical and Electronic Materials Characterization and Evaluation Materials Ceramics, Glass, Composites, Natural Methods Crystallography
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Ceramics and Composites Mechanics of Materials Materials Chemistry Condensed Matter Physics Electrical and Electronic Engineering

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