Papers – Page 216 – TechConnect Briefs

High Performance Supercapacitors Based on Thermal Reduced Graphene Oxide

Perego D., Franz S., Bestetti M., Borioli C., Politecnico di Milano, IT

THERMALLY REDUCED GRAPHENE OXIDE BASED SUPERCAPACITORS HAVE BEEN FABRICATED AND TESTED. ELECTRODES BASED ON METAL SUBSTRATE (TI, AISI304, NI, AL) WERE FABRICATED BY EITHER BY ELECTROPHORESIS AND SPRAY COATING OF GRAPHENE OXIDE SOLUTIONS. ELECTROCHEMICAL TEST [...]

AC Conductivity, Dielectric and Electric Modulus Studies of Nanocrystalline LiCoO2 Particles

Nageswara Rao B., Venkateswarlu M., Satyanarayana N., Pondicherry University, IN

Nanocrystalline LiCoO2 particles were successfully synthesized using acryl amide assisted polymeric citrate process.The formation of phase pure LiCoO2 was confirmed from XRD results. FTIR results confirmed the formation LiCoO2 structure. SEM results showed the formation [...]

Carbon Combustion Synthesis of Lithium Cobaltate

Hobosyan M., Mamyrbaeva Y., Martirosyan K.S., University of Texas at Brownsville, US

We recently developed a novel process Carbon Combustion Synthesis of Oxides (CCSO) to rapidly produce high purity, submicron, porous powders of complex oxides. The crystalline LiCoO2 nanoparticles were synthesized by carbon combustion synthesis, and characterized [...]

Rechargeable Lithium-ion Batteries For Wireless Smart Designs

Mourzagh D., Daniel L., Chami M., Rouault H., Fusalba F., CEA, FR

Wireless communication is today considered as a disruptive technology. Indeed, even if wired systems can easily achieve 100% of reliability, it induces high amount of wiring, which has non negligible impact on the mass and [...]

Magnesium Ion Conducting Polymer Electrolytes: Potential Alternate as Non-lithium Electrolytes for All-Solid-State Battery Applications

Agrawal R.C., Pt. Ravishankar Shukla University, IN

Majority of the portable batteries used today in mobile applications are based on Li+- ion polymer electrolytes and Li-metal electrodes. Li+- salts/Li- metal encounter many serious inherent limitations viz. very reactive, difficult to handle in [...]

Synthesis and characterization of Al-Al2O3/PVDF core-shell nanodieletrics for energy storage

Badi N., Mekala R., University of Houston, US

Extensive interest is being invested into the research of polymer based nanodielectric films. Such a material provides a more practical energy storage solution primarily for embedded capacitors and can be extended for discrete capacitor devices. [...]

Ultrasonically-Assisted Preparation and Functionalization of Graphene

Hielscher K., Hielscher Ultrasonics, DE

Since the extraordinary characteristics of graphite and graphene are known, several methods for its preparation have been developed. Beside to chemical production of graphenes from graphene oxide in multi-step processes, for which very strong oxidizing [...]

Pd/WO3-ZrO2 catalysts: synthesis, characterization and catalytic evaluation

Chen L.F., Ramirez Sebastian S.P., Wang J.A., Instituto Politecnico Nacional, MX

The present work aims at searching for new catalysts for n-heptane isomerization. Four WO3-ZrO2 oxides were prepared by varying WO3 content in 5, 10, 15 and 25 wt% using a sol-gel technique. The 1wt% Pd/WO3-ZrO2 [...]

Structural characterization and photocatalytic activity of electrospun TiO2 and Ce-dopedTiO2 nanofibers

Sang-urai S., Worayingyong A., Mansiri S., Smith M.F., Seraphin S., Kasetsart University, TH

Mixed phase TiO2 and Ce-doped TiO2 nanofibers with different content (0.5, 2.0, 8.0%) ofcerium ions were prepared by a sol-gel electro-spinning method. Results from SEM showed nobeads on the undoped-TiO2 and Ce-doped TiO2 nanofibers with [...]

The effect of promoters on reduction of Ru/ZrO2/Co/SiO2 catalyst for Fischer-Tropsch synthesis as studied by in situ XANES.

Kangvansura P., Poo-arporn Y., Schulz H., Worayingyong A., Kasetsart University, TH

AbstractRu/ZrO2/Co/SiO2 was prepared via a co-precipitation and an incipient wetnessimpregnation methods and characterized by XRD and XANES. To study the effect ofpromoters on reduction of active cobalt species on the catalyst, Ru/ZrO2/Co/SiO2,ZrO2/Co/SiO2, Ru/Co/SiO2, and Co/SiO2 [...]