Spontaneous recovery of hydrogen-degraded TiO[sub 2] ceramic capacitors

Chen, W. P.; Wang, Y.; Dai, J. Y.; Lu, S. G.; Wang, X. X.; Lee, P. F.; W., Chan, H. L.; Choy, C. L.
January 2004
Applied Physics Letters;1/5/2004, Vol. 84 Issue 1, p103
Academic Journal
Degradation of TiO[sub 2]-based ceramic capacitors was observed after hydrogen incorporation on the termination electrodes of the capacitors via electrolysis of water. Fourier-transform infrared (FTIR) absorption spectra analysis of polished rutile single crystals clearly showed that hydrogen was incorporated into the TiO[sub 2] lattice through the treatment. Hydrogen reduces Ti[sup 4+] to Ti[sup 3+] and increases the concentration of charge carriers. The degradation was found to exhibit a strong dependence on time at room temperature. The degraded properties were spontaneously recovered through an aging process, showing a spontaneous recovery unique to TiO[sub 2]-based ceramic capacitors. It is proposed that hydrogen is metastable in TiO[sub 2] and that hydrogen-induced degradation has different stabilities among various oxide-based components and devices. © 2004 American Institute of Physics.


Related Articles

  • Specific features of the optical absorption in carbon nanosystems with hydrogen. Mavrinskaya, N. A.; Voinkova, I. V.; Baĭtinger, E. M.; Mavrinskiĭ, A. V. // Physics of the Solid State;Oct2008, Vol. 50 Issue 10, p1830 

    This paper reports on the results of experimental investigations of the optical absorption (in the wavelength range 200–1200 nm) by carbon-containing thin nanofilms formed on the surface of poly(vinylidene fluoride) upon its chemical functionalization. The optical spectra exhibit...

  • Local impedance and microchemical analysis of electrical heterogeneities in multilayer electroceramic devices. Yang, G. Y.; Moses, P. J.; Dickey, E. C.; Randall, C. A. // Journal of Materials Research;Dec2007, Vol. 22 Issue 12, p16 

    We present an experimental methodology for locating and studying local failure sites in multilayer electroceramic devices at the submicron-length scale. In particular, the inhomogeneous degradation of multilayer ceramic capacitors is studied using a judicious combination of scanning electron...

  • Comparative Analysis of Carbon Plasma in Arc and RF Reactors. Todorović-Marković, B.; Markovic, Z.; Mohai, I.; Szepvolgyi, J. // AIP Conference Proceedings;2004, Vol. 740 Issue 1, p328 

    Results on studies of molecular spectra emitted in the initial stages of fullerene formation during the processing of graphite powder in induction RF reactor and evaporation of graphite electrodes in arc reactor are presented in this paper. It was found that C2 radicals were dominant molecular...

  • In-House Generation of Hydrogen for Gas Chromatography.  // LC-GC North America;Feb2009 Supplement, Vol. 27, p52 

    Hydrogen, commonly used as a carrier gas instead of Helium for gas chromatography (GC) can be supplied via cylinders or by the electrolysis of water using an in-house generator containing metallic electrodes or an ionomeric membrane. An in-house generator can provide a significant increase in...

  • Water electrolysis activated by Ru nanorod array electrodes. Seongyul Kim; Koratkar, Nikhil; Karabacak, Tansel; Toh-Ming Lu // Applied Physics Letters;6/26/2006, Vol. 88 Issue 26, p263106 

    Efficient hydrogen production is critical to fuel cell operation. One of the most convenient methods to produce hydrogen is via water electrolysis. However, overpotential losses at the cell electrodes results in poor efficiency. In this study we carried out water electrolysis experiments with...

  • Highly active oxide photocathode for photoelectrochemical water reduction. Paracchino, Adriana; Laporte, Vincent; Sivula, Kevin; Grätzel, Michael; Thimsen, Elijah // Nature Materials;Jun2011, Vol. 10 Issue 6, p456 

    A clean and efficient way to overcome the limited supply of fossil fuels and the greenhouse effect is the production of hydrogen fuel from sunlight and water through the semiconductor/water junction of a photoelectrochemical cell, where energy collection and water electrolysis are combined into...

  • Electronic properties and geometric structures of Li4H and Li9H from optical absorption spectra. Vezin, B.; Dugourd, Ph.; Bordas, C.; Rayane, D.; Broyer, M.; Bonacˇic-Koutecký, V.; Pittner, J.; Fuchs, C.; Gaus, J.; Koutecký, J. // Journal of Chemical Physics;2/15/1995, Vol. 102 Issue 7, p2727 

    Optical absorption spectra of Li4H and Li9H clusters have been recorded by depletion spectroscopy in the visible range. From comparison with ab initio calculations, geometries of both clusters are identified. The hydrogen atom assumes a peripheral position bridging two and three Li atoms in the...

  • Hydrogen self-trapping near silicon atoms in Ge-rich SiGe alloys. Pereira, R. N.; Nielsen, B. Bech; Coutinho, J.; Torres, V. J. B.; Briddon, P. R. // Applied Physics Letters;4/3/2006, Vol. 88 Issue 14, p142112 

    Infrared absorption spectroscopy and ab initio density functional modeling are used to investigate hydrogen defects that are stable at and above room temperature in proton-implanted Ge-rich SiGe alloys. We find that Si atoms are effective nucleation sites for hydrogen, leading to the formation...

  • Structural and electronic evolution of the As(OH)3 molecule in high temperature aqueous solutions: An x-ray absorption investigation. Testemale, Denis; Hazemann, Jean-Louis; Pokrovski, Gleb S.; Joly, Yves; Roux, Jacques; Argoud, Roger; Geaymond, Olivier // Journal of Chemical Physics;11/8/2004, Vol. 121 Issue 18, p8973 

    The geometrical and electronic structure of the arsenious acid molecule As(OH)3 in aqueous solutions has been investigated by x-ray absorption spectroscopy (XAS) within extended x-ray absorption spectroscopy (EXAFS) and x-ray absorption near edge structure (XANES), using realistic...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics