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Your search keyword '"Ferraris, John P."' showing total 357 results
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357 results on '"Ferraris, John P."'

4. Organic–Inorganic Nanohybrids in Supercapacitors

Author

Abbas, Muhammad, Haque, Syed Fahad Bin, Tian, Yafen, Ferraris, John P., Balkus, Kenneth J., Jr., Thakur, Vijay Kumar, Series Editor, Rizwan, Komal, editor, Bilal, Muhammad, editor, Rasheed, Tahir, editor, and Nguyen, Tuan Anh, editor

Published
2022
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7. MOP−18−Derived CuO Fiber for Hybrid Supercapacitor Electrodes.

Author

Haque, Syed Fahad Bin, Balkus Jr., Kenneth J., and Ferraris, John P.

Subjects
SUPERCAPACITORS, SUPERCAPACITOR electrodes, X-ray photoelectron spectroscopy, COPPER oxide, ELECTRON spectroscopy, ENERGY density, METHYL methacrylate
Abstract

This study explores a simple method of fabricating hybrid supercapacitor electrodes, which could potentially broaden the application of this technology. The method involves electrospinning a uniform solution of Matrimid/Metal−Organic Polyhedra 18 (MOP−18) followed by carbonization at a relatively low temperature of 700 °C in air, rather than in an inert atmosphere, to create free−standing, redox−active hybrid supercapacitor electrodes. Additionally, the synthesis procedure requires no stabilization or activation steps, which enhances the cost effectiveness of the synthesized electrode materials. The resulting C/CuO composite was used as the working electrode, with a polyacrylonitrile (PAN)/Poly(methyl methacrylate) (PMMA) carbon nanofiber (CNF) electrode as the counter and 6 M KOH as the electrolyte in a T−cell configuration. The cell performance and redox activity were evaluated using cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), electrochemical impedance spectroscopy (EIS) and cycling stability tests. Additionally, the physical and chemical structures of the electrode materials were assessed using X−ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron spectroscopy (TEM), X−ray diffractometry (PXRD), surface area analysis and other characterization techniques. The electrode material demonstrated a specific capacitance of up to 206 F/g. Supercapacitors utilizing this material display an energy density of 10.3 Wh/kg (active material) at a current density of 1 A/g in electrochemical testing. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Fuel-Powered Artificial Muscles

Author

Ebron, Von Howard, Yang, Zhiwei, Seyer, Daniel J., Kozlov, Mikhail E., Oh, Jiyoung, Xie, Hui, Razal, Joselito, Hall, Lee J., Ferraris, John P., MacDiarmid, Alan G., and Baughman, Ray H.

Published
2006

10. Pillared Carbon Membranes Derived from Cardo Polymers

Author

Tajik, Masoumeh, primary, Bin Haque, Syed Fahad, additional, Perez, Edson V., additional, Vizuet, Juan P., additional, Firouzi, Hamid Reza, additional, Balkus, Kenneth J., additional, Musselman, Inga H., additional, and Ferraris, John P., additional

Published
2023
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12. Vanadium Sesquioxide/Nitride Nanostructures in Electrospun Carbon Fibers for High Energy Density Supercapacitors.

Author

Tian, Yafen, Abbas, Muhammad, Haque, Syed Fahad Bin, Tian, Siyu, Zhu, Xiangyu, Xiong, Guoping, Ferraris, John P., and Balkus Jr., Kenneth J.

Abstract

Vanadium sesquioxide/vanadium nitride nanoparticles were prepared in carbon fibers by electrospinning, followed by carbonization. Polyacrylonitrile was used as the carbon precursor, poly-(methyl methacrylate) as the porogen, and V2O5 nanowires as the vanadium source. During the high temperature carbonization, V2O5 was reduced in situ by carbon and converted into V2O3 and further transformed into VN by NH3 released from polyacrylonitrile. The composite was used as electrodes and fabricated into a symmetric coin cell-type supercapacitor using 1 M lithium bis-(trifluoromethanesulfonyl)-imide in propylene carbonate as the electrolyte. The resulting supercapacitor showed a specific capacitance of 369 F g–1 at 5 mV/s, an energy density of 107 Wh kg–1 at 0.05 A g–1, and a high power density of 5154 W kg–1 at 5 A g–1. [ABSTRACT FROM AUTHOR]

Published
2023
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39. Electrospun MEH-PPV/SBA-15 composite nanofibers using a dual syringe method

Author

Madhugiri, Sudha, Dalton, Alan, Gutierrez, Jose, Ferraris, John P., and Balkus, Kenneth J., Jr.

Subjects
Molecular sieves -- Analysis, Polymers -- Chemical properties, Chemistry
Abstract

The process pf electrospinning, which produces fibers in the nanometer to micron range under the influence of high voltages, is studied to produce polymer and textile fibers. The electroluminescent polymer MEH-PPV and molecular sieve SBA-15 is used to produce the composite fibers and an inte4seting aspect of these composites is that the fluorescence of MEH-PPV is blue shifted in the composites.

Published
2003

40. Heterogeneous electron-transfer kinetics for ruthenium and ferrocene redox moieties through alkanethiol monolayers on gold

Author

Smalley, Joyhn F.; Ferraris, John P.; Chalfant, Keli; Zawodzinsk, Thomas; Feldberg, Stephen W.; Newton, Marshall D., Finklea, Harry O., Chidsey, Christopher E.D., Linford, Matthew R., and Creager, Stephen E.

Subjects
Ruthenium -- Chemical properties, Electrodes -- Usage, Electrodes -- Thermal properties, Gold compounds -- Usage, Electron transport -- Analysis, Chemistry
Abstract

The standard heterogeneous electron-transfer rate constants between substrate gold electrodes and either ferrocene or pentaaminepyridine ruthenium redox couples attached to the electrode surface by various lengths, which are measured as a function of temperature are presented.

Published
2003

43. Hierarchical Porous Carbon Arising from MOF Encapsulated Bacteria and its Energy Storage Potential

Author

Li, Shaobo, primary, Zhou, Xiaoshuang, additional, Chen, Zhuo, additional, Herbert, Fabian C., additional, Jayawickramage, Rangana, additional, Panangala, Samitha D., additional, Luzuriaga, Michael A., additional, Alahakoon, Sampath B., additional, Mohottalalage, Shashini, additional, Meng, Xin, additional, Fei, Ling, additional, Ferraris, John P., additional, Smaldone, Ron, additional, and Gassensmith, Jeremiah J., additional

Published
2019
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