01431nas a2200133 4500008004100000050001500041245010100056210006900157520093400226100001901160700001801179700002101197856007901218 1994 eng d aLBNL-3900500aCharacterization of Tantalum Oxide Films Prepared by Sol-Gel Process for electrochemical devices0 aCharacterization of Tantalum Oxide Films Prepared by SolGel Proc3 a
Tantalum oxide films were prepared by sol-gel process using tantalum ethoxide Ta(OC2H5)5. The dependence of deposition conditions (i.e. composition of polymeric solutions and spinning rate) on ionic conductivities for tantalum oxide films were studied. The best results achieved for films fabricated by the spin coating technique were from clear polymeric solutions. These films had low packing density ρ=3.2 g/cm3 and good proton conductivity (about 10-6 Ω-1 cm-1). X-ray photoelectron spectroscopy (XPS) was used for studying the compositions of the tantalum oxide films. We report on the use of tantalum oxide films as ion conductors in devices consisting of WO3/Ta2O5/H+ ion storage polymer structure. We found tantalum oxide to have very good properties for proton device applications.
1 aÖzer, Nilgün1 aHe, Yongxiang1 aLampert, Carl, M uhttps://facades.lbl.gov/publications/characterization-tantalum-oxide-films01843nas a2200181 4500008004100000050001400041245009300055210006900148300000800217520124200225100002101467700002201488700002101510700001801531700001801549700002701567856006701594 1993 eng d aLBL-3314400aCharacteristics of Laminated Electrochromic Devices Using Polyorganodisulfate Electrodes0 aCharacteristics of Laminated Electrochromic Devices Using Polyor a1433 aThe use of polyorganodisulfides as optically passive counterelectrodes in a variety of electrochromic devices are discussed. Characteristic data is presented for electrochmmic devices using proton, and lithium coloration ions with polyethylene oxide electrolyte and polydimercaptothiadiazole positive electrodes. Solid state devices consisting of molybdenum doped W03, amorphous polyethylene oxide electrolyte (a-PEO), and a polyorganodisulfide counter-electrode colored rapidly from a pale yellow to a deep blue-green, upon application of 1.2 V d.c. The photopic transmittance changed from 61 to 98, and the solar transmittance from 45 to 5% during the coloration process. Also, our experiments with polyimidazole are detailed. This family of compounds due to its unique electrical and ion conduction properties allow a single composite ion storage and ion conductor electrode to be made, simplifying the device construction. Devices rnade from this family of compounds color to deep blue-gray upon application of 1.2-1.5 V. Bleaching occurs at -0.4 to -0.5 s. The photopic transmittance changed from 55 to 9%. and the solar transmittance from 34 to 4% during coloration. Both coloration and bleaching are quite rapid.
1 aLampert, Carl, M1 aVisco, Steven, J.1 aDoeff, Marca, M.1 aMa, Yan, Ping1 aHe, Yongxiang1 aGiron, Jean-Christophe uhttps://facades.lbl.gov/publications/characteristics-laminated