Papers by Keyword: Film Electrode

Abstract: In this work, potassium tantalate (KTaO₃) particles were synthesized using a low-temperature hydrothermal method. The phase structure of samples prepared was performed by X-ray diffraction (XRD). The result revealed that it belongs to cubic crystal. The electrochemical behaviour of a KTaO₃ film coated electrode was investigated in 0.1 mol dm^-3 KCl containing 5 mmol dm^-3 K₃Fe (CN)₆ with cyclic voltgrammetry (CV). The CV results indicated that the KTaO₃ film coated electrode exhibited excellent electrochemical stability. The electrochemical reaction of K₃Fe (CN)₆ on the KTaO₃ film coated electrode was a diffusion-controlling process.

Abstract: With carbon nanotube as cold cathode, the field emission display based on the improved film-electrode was fabricated. The indium tin oxide film covered on the glass surface was etched to form the film-electrode. For one film-electrode stripe, the left bar electrode and the right bar electrode were formed on the both side of the bottom electrode. The carbon nanotube would be prepared on the bottom electrode surface. The cathode covering layer fabricated with the sintered insulation slurry would cover the left and right bar electrodes. It was confirmed that the emission current could be controlled by the formed electric-field with the improved film-electrode.

Abstract: Europium doped tantalum oxide (europium-Ta₂O₅) particles were synthesized with a low temperature hydrothermal method. The electrochemical behaviour of an europium-Ta2O5 film electrode in 0.1 mol dm^-3 KCl solution containing 5 mmol dm^-3 K₃Fe(CN)₆ was investigated using cyclic voltgrammetry (CV). The CV results indicated that the europium-Ta₂O₅ film electrode exhibited good stable and reversible electrochemistry properties. The electrochemical reaction of K₃Fe(CN)₆ was a diffusion-controlling process on the europium-Ta₂O₅ film electrode. The europium-Ta₂O₅ particles might have potential applications in electrochemical fields.

Abstract: Terbium doped tantalum oxide (Tb-Ta₂O₅) particles were synthesized with a low hydrothermal method. The phase structure of Tb-Ta₂O₅ obtained was performed by X-ray diffraction (XRD). The result revealed that the terbium doped Ta₂O₅ belongs to orthorhombic crystal. The electrochemical property of methylene blue (MB) at Tb-Ta₂O₅ film electrode in 0.5 mol dm^-3 KCl aqueous solution was investigated with cyclic voltgrammetry (CV). The CV result indicated that the electrochemical kinetics of MB was diffusion controlling at Tb-Ta₂O₅ film electrode. Tb dopping imporved the electrochemical property of Ta₂O₅ film electrode. Tb-Ta₂O₅ is used as a kind of electrode material which has some new potential applications.

Abstract: Cerium doped tantalum oxide (Ce-Ta₂O₅) particles were synthesized with hydrothermal method. The electrochemical behaviour of Ce-Ta₂O₅ film electrode in 0.1 mol dm^-3 KCl containing 10 mmol dm^-3 K₃Fe(CN)₆ was investigated with cyclic voltgrammetry (CV). The CV results indicated that the electrochemical reaction on the Ce-Ta₂O₅ film electrode exhibited stable electrochemical property. In addition, the phase structure of Ce-Ta₂O₅ prepared was performed by X-ray diffraction (XRD). The result revealed that the cerium doped Ta₂O₅ belongs to orthorhombic crystal.

Abstract: Si film electrodes for Li micro-film batteries were fabricated on a Cu substrate and a Ci/Cu film. In the structural properties, FE-SEM observation demonstrated difference in surface morphologies of Si films with different under layers. Surface of the Si film deposited consists of clusters and average size of the cluster was 165 nm for Si/Cu film and 80 nm for Si/C/Cu film. Si film has amorphous phase in spite of different under layers; Cu substrate and C/Cu film. In the electrochemical properties, the carbon-inserted film showed a good cycleability compared with Si/Cu electrode. It is believed that the insertion of carbon film as a buffer film absorbed the stress generated during charge-discharge process and improved cycle performance of Si anode electrode.

Abstract: Uniform multiwalled carbon nanotubes can be synthesized using one-dimensional nanochannels of an aluminum anodic oxide film as a template. This technique allows one to prepare various types of unique carbon nanotubes. It is possible to prepare carbon nanotubes with a double coaxial structure of heteroatom-doped multiwalls. Test tube like carbon prepared by this technique was found to be dispersible in water without any post treatment. Moreover, a large carbon film with millions of carbon nanopillars on its one side was synthesized and it was demonstrated that such carbon film could be used as a corrosion-resistant but electrochemically active film electrode. In addition to these morphological control, complete filling of ferromagnetic metal into the whole cavity of carbon nanotubes was achieved by the template technique.