نتایج جستجو برای: nafion h
تعداد نتایج: 532347 فیلتر نتایج به سال:
This paper presents our research on silicon-based proton exchange membranes for siliconbased micro fuel cell applications. The porous silicon membranes with a thickness of 20-40 m were fabricated. And the porous silicon-based proton exchange membranes were formed by using the combination of the porous silicon membranes and Nafion solution. The proton conductivities of the porous silicon-based P...
Understanding doping in polymer semiconductors has important implications for the development of organic electronic devices. This study reports a detailed investigation poly(3-hexylthiophene) (P3HT)/Nafion bilayer interfaces commonly used biosensors. A combination UV–visible spectroscopy, dynamic secondary ion mass spectrometry (d-SIMS), mechanical thermal analysis, and electrical device charac...
Ag/Ag 2 O electrodes were fabricated on both carbon fiber paper (CP) and cloth (CC) substrates via galvanostatic electrodeposition to develop an electroosmotic (EO) pump. The results showed that Ag was deposited along the fibers further grew into particles. loading CP higher than of CC at same current density, difference increased with density increase. Nafion coating applied as-electrodeposite...
Abstract Electrochemical reactions with insertions of ions in solids depend on crystallographic orientations. We investigated electrochemical responses (100), (110) and (111)-oriented oxygen-deficient perovskite SrFeO 2.5+ y epitaxial films electric-field-effect transistor structures the proton-conducting electrolyte Nafion as a gate insulator. found that only (100)-oriented exhibit changes ass...
A breakthrough in graphene-oxide/silicon heterojunction solar cells is presented which edge-oxidized graphene and an in-plane charge transfer dopant (Nafion) are combined to form a high-quality passivating contact scheme. oxide (GO):Nafion ink developed advanced back-junction GO:Nafion/n-Si cell with high-power conversion efficiency (18.8%) large area (5.5 cm2) reported. This scalable solution-...
This manuscript reports on the direct identification of four states of water in hydrated Nafion ionomer polymers, including a quantitative measurement of their dynamics, as previously published in the Journal of the Electrochemical Society, 155, B163-B171 (2008). Here, we provide further details on the dynamics of these water states and we underline still-open scientific questions, towards stim...
Two-terminal protonic devices with PdHx proton conducting contacts and a Nafion channel achieve 25 ms spiking, short term depression, and low-energy memory switching.
Water confined on the scale of 20 Å, is known to have different transport and thermodynamic properties from that of bulk water, and the proton momentum distribution has recently been shown to have qualitatively different properties from that exhibited in bulk water. The electronic ground state of nanoconfined water must be responsible for these anomalies but has so far not been investigated. We...
A modified Nafion dispersion for direct screen printing was developed and characterized. Commercial solution neutralized to its sodium form the solvent replaced by a screen-printing-compatible solvent. The has optimized rheological properties including shear-thinning behavior, thixotropy, moderate yield stress. elemental composition chemical states of were characterized X-ray photoelectron spec...
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