Preparation and Characterization of Lithium and Sodium Doped Polymethyl Methacrylate Based Gel Polymer Electrolytes for Battery Applications PDF Download
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Author: Othman Lisani
Publisher:
ISBN:
Category :
Languages : en
Pages : 346
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Author: Othman Lisani
Publisher:
ISBN:
Category :
Languages : en
Pages : 346
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Author: Philipp Isken
Publisher:
ISBN:
Category :
Languages : en
Pages : 194
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Author: Tan Winie
Publisher: John Wiley & Sons
ISBN: 3527342001
Category : Science
Languages : en
Pages : 416
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Book Description
A comprehensive overview of the main characterization techniques of polymer electrolytes and their applications in electrochemical devices Polymer Electrolytes is a comprehensive and up-to-date guide to the characterization and applications of polymer electrolytes. The authors ? noted experts on the topic ? discuss the various characterization methods, including impedance spectroscopy and thermal characterization. The authors also provide information on the myriad applications of polymer electrolytes in electrochemical devices, lithium ion batteries, supercapacitors, solar cells and electrochromic windows. Over the past three decades, researchers have been developing new polymer electrolytes and assessed their application potential in electrochemical and electrical power generation, storage, and conversion systems. As a result, many new polymer electrolytes have been found, characterized, and applied in electrochemical and electrical devices. This important book: -Reviews polymer electrolytes, a key component in electrochemical power sources, and thus benefits scientists in both academia and industry -Provides an interdisciplinary resource spanning electrochemistry, physical chemistry, and energy applications -Contains detailed and comprehensive information on characterization and applications of polymer electrolytes Written for materials scientists, physical chemists, solid state chemists, electrochemists, and chemists in industry professions, Polymer Electrolytes is an essential resource that explores the key characterization techniques of polymer electrolytes and reveals how they are applied in electrochemical devices.
Author: Achchhe Lal Sharma
Publisher: CRC Press
ISBN: 1000756114
Category : Science
Languages : en
Pages : 276
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Book Description
Polymer Electrolytes and their Composites for Energy Storage/Conversion Devices presents a state-of-the-art overview of the research and development in the use of polymers as electrolyte materials for various applications. It covers types of polymer electrolytes, ion dynamics, and the role of dielectric parameters and a review of applications. Divided into two parts, the first part of the book focuses on the types of polymer electrolytes, ion dynamics, and the role of dielectric parameters, while the second part provides a critical review of applications based on polymer electrolytes and their composites. This book: Presents the fundamentals of polymer composites for energy storage/conversion devices Explores the ion dynamics and dielectric properties role in polymer electrolytes Provides detailed preparation methods and important characterization techniques to evaluate the electrolyte potential Reviews analysis of current updates in polymer electrolytes Includes various applications in supercapacitor, battery, fuel cell, and electrochromic windows The book is aimed at researchers and graduate students in physics, materials science, chemistry, materials engineering, energy storage, engineering physics, and industry.
Author: Philipp Isken
Publisher:
ISBN:
Category :
Languages : en
Pages : 194
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Author: Yuan Xue
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
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Book Description
"The innovation of batteries is urgently required due to the world-wide energy crisis and extensive adoption of renewable energy sources. Secondary batteries attract increased and significant research interests as alternative energy storage devices, for instance, lithium-ion battery. In decades, a lot of efforts have been devoted to lithium-ion battery in terms of fabrication, operation and optimization. Lithium-ion battery exhibits high energy density ascribing to its high energy capacity and light molar mass. The usage of lithium-ion battery technology is still limited, however, by the high capital cost of lithium metal and lack of lithium deposition methodology. Sodium-based batteries are developed as an appealing candidate for replacing lithium-based batteries since sodium is a more economic choice and sodium-based batteries are more suitable for large scale application. A special attention will be paid to sodium-air battery, which is environmentally friendly, low cost with high energy density, in the new energy storage system development. To enable sodium-based battery, the sodium ion conducting electrolyte is the key determinant that governs the batteries' usable power, operating potential, durability, safety, cost, etc. Most electrolytes which are widely used nowadays adopt liquid or solid states formulations to boost the ion conduction; however, corrosion, reduction in lifetime and low ionic conductivity have been observed. Consequently, developing a new sodium conducting electrolyte remains a key challenge in the application of sodium-based batteries. The goal of the thesis is to develop a robust and high efficient sodium ion conducting electrolyte which will be able for sodium-based batteries application. The thesis, firstly, deals with the research for the gel polymer electrolyte (GPE), consisting of polymer blend matrix (poly(methyl methacrylate)/polycarbonate), organic liquids (ethylene carbonate (EC) and propylene carbonate (PC)) and sodium tetrafluoroborate (NaBF4). This new, high sodium ion conductive GPE was fabricated through solution casting technique. The addition of NaBF4 decreased the crystallinity of the polymer blend matrix, while providing more charge carriers to enhance the ionic conductivity. The peak ionic conductivity of 5.67×10-4 S cm-1 was obtained for the GPE with 25 wt.% NaBF4, which increases two orders of magnitude when compared to the GPE without NaBF4, which has a value of 1.03×10-6 S/cm. The temperature dependence of ionic conductivity behavior agrees with the Arrhenius equation when temperature elevated from 20 oC to 90 oC. The activation energies for GPEs with concentrations of 5 wt.%, 15 wt.% and 25 wt% NaBF4 are found to be 0.13, 0.17 and 0.28 eV respectively. GPEs were confirmed to be electrochemically stable in a potential range of -5 V to 5 V by the cyclic voltammetry test. The transference numbers of GPEs varied from 0.83 to 0.93 illustrated that GPEs are ionic conductive electrolytes. Emerging from the solution-casted GPE, the thesis employs free radical polymerization for PMMA-based cross-linked GPE as sodium-ion transport enhancement. The cross-linked GPE exhibits higher ionic conductivity than that of GPE with polymer blend matrix, good mechanical property and low cost. In the cross-linked GPE system, NaBF4 was substituted by sodium hexafluorophosphate (NaPF6). NaPF6 will dissolve in organic solvents more easily than NaBF4 due to its lower dissociation energy than that of NaBF4. The highest ionic conductivity obtained was 1.33×10-3 S cm-1 for the cross-linked GPE with 20 wt.% NaPF6, which is much higher than the highest ionic conductivity of GPE with PMMA/polycarbonate matrix. The Shore A durometer test revealed that the NaPF6 additions enhanced the hardness of cross-linked GPEs. Activation energies calculated based on Arrhenius equation for cross-linked GPEs with 10 wt.%, 20 wt.% and 30 wt.% NaPF6 were 0.13, 0.10 and 0.16 eV, respectively. The electrochemical window for cross-linked was valid from -2.5 V to 2.5 V and the transference numbers was ranging from 0.9 to 0.96. This work demonstrates that the adoption of cross-linking technique and NaPF6 opens the door to facile synthesis of sodium ion conductive GPEs The successful synthesis of the cross-linked GPE motivates us to explore the possibility to develop fabric-reinforced cross-linked GPE (FRCL GPE) constructed by a cross-linked polymer host with an embedded thin layer of fabric substrate, organic liquids PC/EC and NaPF6. The novel FRCL GPEs with reduced weight have been successfully fabricated and characterized. The SEM images confirmed that the fabric was embedded inside the cross-linked GPE. The highest ionic conductivity of FRCL GPE is 3.01×10-4 S cm-1 for the FRCL GPE with 20 wt.% NaPF6, which is comparable with other composite GPEs in which the highest ionic conductivity is 0.3 mS cm-1. The values of activation energies are 0.12 eV, 0.11 eV and 0.15 eV for FRCL GPEs with 15 wt.%, 20 wt.% and 25 wt.% NaPF6, respectively. This result agrees with ionic conductivity tendency that the lower activation energy offers FRCL GPE higher ionic conductivity. The electrochemical window was defined from -3 V to 3 V from cyclic voltammetry measurement, which is a wide range to cover the reactions for sodium-based batteries. The transference numbers observed for FRCL GPEs with various NaPF6 are in the range of 0.927~0.966. The values indicate the conductivity of FRCL GPEs is predominately contributed by ions motion, the electron transfer can be neglected. The final test of mechanical properties strongly confirmed the importance of fabric reinforcement for cross-linked GPEs. The strength of FRCL GPE is ten times of that of cross-linked GPE without reinforcement. The results make the FRCL GPE a promising electrolyte with good mechanical stability to be used for battery applications. Future efforts will be expected to improve the specific energy density of the energy storage devices, further elevate the ionic conductivity and mechanical property."--Pages ix-xii.
Author: Vipin Kumar
Publisher: CRC Press
ISBN: 1003803229
Category : Technology & Engineering
Languages : en
Pages : 177
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Book Description
Highlights scientific challenges in developing room-temperature sodium-sulfur batteries Covers pertinent anode, cathode, and electrolyte engineering Provides scientific and technical interpretation for each of the cell components Discusses how Na-S batteries relate to the more extensively researched Li-S batteries Explores importance of the SEI and CEI in developing stable sodium-sulfur batteries
Author: Neethu T. M. Balakrishnan
Publisher: Springer Nature
ISBN: 9811588449
Category : Technology & Engineering
Languages : en
Pages : 598
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Book Description
This book provides a consolidated description of the process of electro-spinning and detailed properties and applications of electro-spun electrodes and electrolytes in energy storage devices. It discusses the preparation, structure and electrochemical properties of nanofiber electrode and electrolyte materials. It focuses exclusively on Lithium Ion batteries, with the contents discussing different aspects of electrospinning in storage systems. This book aims to provide a comprehensive resource to help researchers choose the best electrodes and electrolyte materials based on the properties required for their desired commercial applications. It will be a useful guide to graduate students and researchers working in solid-state chemistry, physics, materials chemistry, and chemical engineering on aspects of energy storage.
Author: Jiexi Wang
Publisher: Frontiers Media SA
ISBN: 2889459772
Category :
Languages : en
Pages : 460
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Book Description
Author: Sudhakar Y N
Publisher: Elsevier
ISBN: 0128136111
Category : Science
Languages : en
Pages : 194
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Book Description
Biopolymer Electrolytes: Fundamentals and Applications in Energy Storage provides the core fundamentals and applications for polyelectrolytes and their properties with a focus on biopolymer electrolytes. Increasing global energy and environmental challenges demand clean and sustainable energy sources to support the modern society. One of the feasible technologies is to use green energy and green materials in devices. Biopolymer electrolytes are one such green material and, hence, have enormous application potential in devices such as electrochemical cells and fuel cells. - Features a stable of case studies throughout the book that underscore key concepts and applications - Provides the core fundamentals and applications for polyelectrolytes and their properties - Weaves the subject of biopolymer electrolytes across a broad range of disciplines, including chemistry, chemical engineering, materials science, environmental science, and pharmaceutical science
