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164 results on '"Kowsari E"'

3. Investigating the efficacy of functionalized graphene oxide with polyhedral oligomeric silsesquioxane as an effective additive in sustainable ionic liquid-based electrolytes for dye-sensitized solar cells through experimental and DFT studies

Author

IVAU: Instituut voor Aardwetenschappen Utrecht, Geochemistry, Orangi, S, Kowsari, E, Boghrabad, MM, Tafreshi, SS, Ramakrishna, S, Chirani, MR, Chinnappan, A, de Leeuw, NH, IVAU: Instituut voor Aardwetenschappen Utrecht, Geochemistry, Orangi, S, Kowsari, E, Boghrabad, MM, Tafreshi, SS, Ramakrishna, S, Chirani, MR, Chinnappan, A, and de Leeuw, NH

Published
2024

35. High-performance symmetric supercapacitor based on new functionalized graphene oxide composites with pyrimidine nucleotide and nucleoside

Author

Dashti Najafi, M, Kowsari, E, Reza Naderi, H, Sarabadani Tafreshi, S, Chinnappan, A, Ramakrishna, S, de Leeuw, NH, and Ehsani, A

Subjects
Materials Chemistry, Physical and Theoretical Chemistry, Condensed Matter Physics, Spectroscopy, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Abstract

Delivery of cytidine triphosphate (CTP) as pyrimidine nucleotide and Cytarabine or arabinosylcytosine (Ara-C) as pyrimidine nucleoside onto the surface of graphene oxide (GO) has led to the fabrication of effective composites of functionalized graphene oxides (FGO-CTP and FGO-Ara-C). In the present study, we have compared FGO-CTP and FGO-Ara-C composites as active electrodes in a system with three electrodes for electrochemical measurement. Also, the as-prepared composites exhibited an ideal supercapacitive behavior in a symmetric capacitor. For the two electrode arrangement, a capacitance of 212F g−1, an energy density of 17.8 Wh kg−1 at 325 W kg−1, and an outstanding life cycling was achieved for the FGO-CTP electrode within a voltage window of 0–1.3 V in 1 M H2SO4 electrolyte, demonstrating greater electrochemical behavior compared to that of FGO-Ara-C electrode. In addition, the DFT calculations and charge density analysis resulted in more charge distribution on the GO layer of FGO-CTP than that of FGO-Ara-C, making it more effective as an electrode material for supercapacitors. Taking advantage of the facile synthesis method for introducing phosphate functional groups onto the surface of graphene oxide opens up an effective way for the fabrication of high-performance devices with large active surface area and high electrochemical ability in energy storage systems. Also, the assembled device expands the practical application areas of electrochemical energy storage devices significantly.

Published
2022
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39. Ionic Liquids for Green Energy Applications

Author

Kowsari, E. and Kowsari, E.

Subjects
Electrolyte solutions, Electric batteries--Materials, Clean energy, Green chemistry
Abstract

During the last twenty years, ionic liquids have become one of the most interesting and rapidly developing areas of modern physical chemistry, technologies and engineering, including constructing new devices for various applications. In order to protect the environment and provide energy security, energy generated from renewable sources has been extensively studied. This book provides a critical review of the progress of using room temperature ionic liquids in green energy storage systems. The use of ionic liquids as electrolytes in electrochemical devices is an emergingfield due to their high conductivity, as well as their thermal, chemical and electrochemical stability under anhydrous conditions. Readers will encounter five chapters in this book on recent applications of ionic liquids in supercapacitors, hydrogen production, fuel cells, Li-ion batteries, and solar cells. Also, modern trends and perspectives are discussed. This book attempts to give a general overview of ionic liquids, identifies the key factors for future research and summarizes the recent progress in the use of ionic liquids as an innovative type of energy storage systems.

Published
2016

40. Polymer Synthesis

Author

Kowsari, E. and Kowsari, E.

Subjects
Polymers--Industrial applications, Polymer engineering, Polymerization
Abstract

This book presents an overview of research on advanced synthesis polymers over the past decade. This special issue, contributed by various authors, focuses on recent advances of the field, which handle the cutting-edge aspects of the advanced technology. The contributions in these twelve chapters summarize some major efforts in this area.

Published
2012

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