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Synthesis Characterization And Performance Of Cathodes For Lithium Ion Batteries
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Book Synopsis Synthesis, Characterization and Performance of Cathodes for Lithium Ion Batteries by : Jianxin Zhu
Download or read book Synthesis, Characterization and Performance of Cathodes for Lithium Ion Batteries written by Jianxin Zhu and published by . This book was released on 2014 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium ion batteries provide a high energy density, higher voltage as well as a long shelf life compared to traditionally used lead acid, NiMH and NiCd batteries. Thus, they are a very promising energy storage system for our daily life. As one of the most important components in a battery, cathode materials have been investigated intensively in recent years as they play a key role in determining the cell voltage and discharge capacity in a battery. Both layered Li(Ni 1/3 Co1/3 Mn1/3 )O 2 (NCM) and olivine-structured LiFePO4 (LFP) materials are promising cathode candidates. However, these cathodes also have some disadvantages that have hindered further commercialization. The main issue with NCM is its rapid performance decay upon cycling. In addition, LFP is hindered by a low rate capacity and low lithium ion diffusivity.
Book Synopsis Synthesis, Characterization, and Electrochemical Performance of Oxide Cathode Materials for Use in Lithium Ion Batteries by : Brandon Joseph Kelly
Download or read book Synthesis, Characterization, and Electrochemical Performance of Oxide Cathode Materials for Use in Lithium Ion Batteries written by Brandon Joseph Kelly and published by . This book was released on 2009 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization and Electrochemical Evaluation of Lithium-manganese Phosphates for Cathode Material in Lithium Ion Batteries by : Evelyn Kai-Hua Ng
Download or read book Synthesis, Characterization and Electrochemical Evaluation of Lithium-manganese Phosphates for Cathode Material in Lithium Ion Batteries written by Evelyn Kai-Hua Ng and published by . This book was released on 2006 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium ion batteries deliver the highest specific energy and energy density of commercially available secondary batteries. The objective of this study was to evaluate lithium-manganese phosphate (LiMnPO4) for potential application as a cathode material in lithium ion batteries due to its high theoretical capacity and stable phospho-olivine structure. LiMnPO 4 was successfully synthesized via a novel aqueous sol-gel process under an inert nitrogen and air atmosphere. Microstructural design strategies including annealing treatment and the addition of 1 wt% copper dopant were evaluated in order to improve the electrochemical performance of the LiMnPO4 cathode. The cathode particle microstructure and morphology were characterized using X-ray diffraction and scanning electron microscopy. Open circuit voltage was 4.1 V for all samples. The electrochemical performance of LiMnPO 4 is significantly improved by the addition of a dopant in an inert nitrogen atmosphere with a specific capacity of 28 mAh/g achieved during the first discharge cycle.
Book Synopsis Synthesis and Characterization of Lini0. 6mn0. 35co0. 05o2 and Li2fesio4/C As Electrodes for Rechargeable Lithium Ion Battery by : Pengda Hong
Download or read book Synthesis and Characterization of Lini0. 6mn0. 35co0. 05o2 and Li2fesio4/C As Electrodes for Rechargeable Lithium Ion Battery written by Pengda Hong and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Synthesis and characterization of LiNi0.6Mn0.35Co0.05O2 and Li2FeSiO4/C as electrodes for rechargeable lithium ion battery" by Pengda, Hong, 洪鹏达, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: The rechargeable lithium ion batteries (LIB) are playing increasingly important roles in powering portal commercial electronic devices. They are also the potential power sources of electric mobile vehicles. The first kind of the cathode materials, LiXCoO2, was commercialized by Sony Company in 1980s, and it is still widely used today in LIB. However, the high cost of cobalt source, its environmental unfriendliness and the safety issue of LiXCoO2 have hindered its widespread usage today. Searching for alternative cathode materials with low cost of the precursors, being environmentally benign and more stable in usage has become a hot topic in LIB research and development. In the first part of this study, lithium nickel manganese cobalt oxide (LiNi0.6Mn0.35Co0.05O2) is studied as the electrode. The materials are synthesized at high temperatures by solid state reaction method. The effect of synthesis temperature on the electrochemical performance is investigated, where characterizations by, for example, X-ray diffraction (XRD) and scanning electron microscopy (SEM), for particle size distribution, specific surface area, and charge-discharge property, are done over samples prepared at different conditions for comparison. The electrochemical tests of the rechargeable Li ion batteries using LiNi0.6Mn0.35Co0.05 cathode prepared at optimum conditions are carried out in various voltage ranges, at different discharge rates and at high temperature. In another set of experiments, the material is adopted as anode with lithium foil as the cathode, and its capacitance is tested. In the second part of this study, the iron based cathode material is investigated. Lithium iron orthosilicate with carbon coating is synthesized at 700℃ by solid state reaction, which is assisted by high energy ball milling. Characterizations are done for discharge capacities of the samples with different carbon weight ratio coatings. DOI: 10.5353/th_b4715029 Subjects: Lithium ion batteries Cathodes Lithium compounds - Synthesis Cobalt compounds - Synthesis Manganese compounds - Synthesis Silicon compounds - Synthesis Iron compounds - Synthesis
Book Synopsis Impedance Spectroscopy by : Evgenij Barsoukov
Download or read book Impedance Spectroscopy written by Evgenij Barsoukov and published by John Wiley & Sons. This book was released on 2018-03-22 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Essential Reference for the Field, Featuring Protocols, Analysis, Fundamentals, and the Latest Advances Impedance Spectroscopy: Theory, Experiment, and Applications provides a comprehensive reference for graduate students, researchers, and engineers working in electrochemistry, physical chemistry, and physics. Covering both fundamentals concepts and practical applications, this unique reference provides a level of understanding that allows immediate use of impedance spectroscopy methods. Step-by-step experiment protocols with analysis guidance lend immediate relevance to general principles, while extensive figures and equations aid in the understanding of complex concepts. Detailed discussion includes the best measurement methods and identifying sources of error, and theoretical considerations for modeling, equivalent circuits, and equations in the complex domain are provided for most subjects under investigation. Written by a team of expert contributors, this book provides a clear understanding of impedance spectroscopy in general as well as the essential skills needed to use it in specific applications. Extensively updated to reflect the field’s latest advances, this new Third Edition: Incorporates the latest research, and provides coverage of new areas in which impedance spectroscopy is gaining importance Discusses the application of impedance spectroscopy to viscoelastic rubbery materials and biological systems Explores impedance spectroscopy applications in electrochemistry, semiconductors, solid electrolytes, corrosion, solid state devices, and electrochemical power sources Examines both the theoretical and practical aspects, and discusses when impedance spectroscopy is and is not the appropriate solution to an analysis problem Researchers and engineers will find value in the immediate practicality, while students will appreciate the hands-on approach to impedance spectroscopy methods. Retaining the reputation it has gained over years as a primary reference, Impedance Spectroscopy: Theory, Experiment, and Applications once again present a comprehensive reference reflecting the current state of the field.
Book Synopsis Synthesis, Characterization and Aging Behavior of Silicate- and Phosphate Based Cathode Materials for Lithium Ion Batteries by : Christian Dippel
Download or read book Synthesis, Characterization and Aging Behavior of Silicate- and Phosphate Based Cathode Materials for Lithium Ion Batteries written by Christian Dippel and published by . This book was released on 2013 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Novel Cathodes and Electrolytes for Lithium-ion Batteries by : Chang Woo Lee
Download or read book Synthesis and Characterization of Novel Cathodes and Electrolytes for Lithium-ion Batteries written by Chang Woo Lee and published by . This book was released on 2003 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Materials for Lithium-Ion Batteries by : Christian Julien
Download or read book Materials for Lithium-Ion Batteries written by Christian Julien and published by Springer Science & Business Media. This book was released on 2000-10-31 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: A lithium-ion battery comprises essentially three components: two intercalation compounds as positive and negative electrodes, separated by an ionic-electronic electrolyte. Each component is discussed in sufficient detail to give the practising engineer an understanding of the subject, providing guidance on the selection of suitable materials in actual applications. Each topic covered is written by an expert, reflecting many years of experience in research and applications. Each topic is provided with an extensive list of references, allowing easy access to further information. Readership: Research students and engineers seeking an expert review. Graduate courses in electrical drives can also be designed around the book by selecting sections for discussion. The coverage and treatment make the book indispensable for the lithium battery community.
Book Synopsis Review on Synthesis, Characterization, and Electrochemical Properties of Fluorinated Nickel-cobalt-manganese Cathode Active Materials for Lithium-ion Batteries by : Ulf Breddemann
Download or read book Review on Synthesis, Characterization, and Electrochemical Properties of Fluorinated Nickel-cobalt-manganese Cathode Active Materials for Lithium-ion Batteries written by Ulf Breddemann and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: In this Review, we report and compare non-fluorinated with fluorinated cathode active materials (CAMs) based on a nickel-cobalt-manganese (NCM) composition such as HE-NCM, NCM, Ni-rich, Co-rich, and Mn-rich CAMs. We evaluate the CAMs according to their fluoride concentration, the F sources used in the synthesis method, characterization techniques, and battery performance [(initial) capacity or coulombic efficiency at C-rate before/after cycles and the temperature]. In detail, we address 33 publications with "single" fluorinated NCM CAMs, including F sources such as LiF, [NH4]F, [NH4]FHF, NaF, NiF2, and F2. Furthermore, we give a short overview of 52 articles for "multiple" (anion and cation) treated NCM CAMs. For all reported articles (single and multiple treated NCM CAMs), we give the CAMs, conductive additives, and binder materials, as well their electrolyte compositions
Book Synopsis Synthesis and Characterization of Vanadium-based Cathode Materials for Lithium Ion Batteries by : 李航空
Download or read book Synthesis and Characterization of Vanadium-based Cathode Materials for Lithium Ion Batteries written by 李航空 and published by . This book was released on 2018 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization and Testing of Novel Anode and Cathode Materials for Li-Ion Batteries by :
Download or read book Synthesis, Characterization and Testing of Novel Anode and Cathode Materials for Li-Ion Batteries written by and published by . This book was released on 2002 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: During this program we have synthesized and characterized several novel cathode and anode materials for application in Li-ion batteries. Novel synthesis routes like chemical doping, electroless deposition and sol-gel method have been used and techniques like impedance, cyclic voltammetry and charge-discharge cycling have been used to characterize these materials. Mathematical models have also been developed to fit the experimental result, thus helping in understanding the mechanisms of these materials.
Book Synopsis Design, Synthesis, and Characterization of Novel Materials for High-performance Lithium-sulfur Batteries by : Na Zhang
Download or read book Design, Synthesis, and Characterization of Novel Materials for High-performance Lithium-sulfur Batteries written by Na Zhang and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With ever-increasing energy demands, tremendous efforts have been devoted to developing rechargeable batteries. Conventional lithium-ion batteries have been widely used for decades, but are approaching their theoretical limit and are unable to meet the rising energy demands. Lithium–sulfur (Li–S) batteries are being actively pursued owing to their high energy density and cost-effectiveness. However, the commercial implementation of Li–S batteries has been impeded by the challenges associated with the sulfur cathodes, including extremely low conductivity, large volumetric expansion and rapid capacity loss arising from the dissolution of the intermediates, and the Li anode, owing to the uncontrollable formation of Li dendrites. To fulfill the promise of Li–S batteries as high-energy devices, it is necessary to solve these issues. In this dissertation, effective materials as sulfur hosts have been studied and possible strategies to improve the performance of the sulfur cathode proposed. These involve designing the structure of the host material to efficiently accommodate sulfur and, at the same time, applying the strong adsorption properties between the active material and the host. As to the Li anode, approaches to suppress the growth of Li dendrites were demonstrated by coating the surface of the anode current collector. These strategies were successful in inhibiting Li dendrites and significantly improve the performance of Li anodes. These studies provide promising results for high-performance Li–S batteries for future large-scale applications.
Book Synopsis Synthesis and Characterization of Morphology-controllable Li(̳1̳+̳x̳)̳Mn1̳.̳5̳Ni0̳.̳5̳O4̳(0≤x≤0.11) as Cathode Materials for Lithium-ion Batteries by : Yunxian Qian
Download or read book Synthesis and Characterization of Morphology-controllable Li(̳1̳+̳x̳)̳Mn1̳.̳5̳Ni0̳.̳5̳O4̳(0≤x≤0.11) as Cathode Materials for Lithium-ion Batteries written by Yunxian Qian and published by . This book was released on 2013 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of High Tap-density LiFePO4 Cathode Material for Lithium Ion Batteries by : 陳文勤
Download or read book Synthesis and Characterization of High Tap-density LiFePO4 Cathode Material for Lithium Ion Batteries written by 陳文勤 and published by . This book was released on 2010 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Electrochemical Characterization of Novel Electroactive Materials for Lithium-ion Batteries by : Karl Joseph Kreder (III)
Download or read book Synthesis and Electrochemical Characterization of Novel Electroactive Materials for Lithium-ion Batteries written by Karl Joseph Kreder (III) and published by . This book was released on 2017 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium-ion batteries (LIBs) have become ubiquitous as energy storage devices for mobile electronics, electric vehicles, and are beginning to be used for electric grid-scale energy storage. Lithium-ion batteries offer higher efficiencies, energy density, and longer life compared to incumbent technologies such as lead-acid and nickel metal hydride. Applications in which LIBs are used are continuing to demand better performing batteries at lower cost, which requires improvement in electroactive materials. This dissertation investigates the low temperature synthesis and modification of LiCoPO4 as a potential high-voltage and therefore higher energy density polyanion cathode material for LIBs, as well as a new class of interdigitated metal foil anodes which promises to be an inexpensive, higher energy density, alternative to graphite. Chapter 1 is a brief introduction to lithium-ion batteries and the principle of operation of intercalation type electrochemical energy storage devices. The components of lithium ion batteries are introduced, specifically the anode, cathode, separator, and electrolyte. Some of the shortfalls of the current technologies are discussed and areas of research interest are highlighted. Chapter 2 is a brief overview of the various experimental methods that are generally applicable to more than one of the subsequent chapters. Methods which are specific to a given study are discussed in their respective chapters. Chapter 3 presents work on the low temperature microwave-assisted solovthermal synthesis (MW-ST) of three unique polymorphs of LiCoPO4, specifically the polymorphs belonging to the Pnma, Cmcm, and Pn21a space groups. Prior to this work, only the Pnma polymorph had been reported via MW-ST method, and electrochemistry had not yet been reported for either the Pn21a or Cmcm polymorph. The dependence of the polymorphs on both the water content, and ammonium hydroxide content of the solvent was shown. Although, the electrochemistry of both the Pn21a and Cmcm polymorphs was found to be inferior to the Pnma polymorph, the ability to synthesize phase pure materials was crucial to conducting the work presented in chapters 4 and 5. Chapter 4 presents the aliovalent substitution of V3+ for Co2+ in LiCoPO4 via a low-temperature MW-ST process. Substitution of up to 7% vanadium for cobalt was demonstrated and verified by changes in the lattice parameters with vanadium content. Both the ionic and electronic conductivity of LiCoPO4 was enhanced with increasing vanadium substitution, which was attributed to the introduction of both charge carriers as well as inter-tunnel cobalt vacancies. Finally, the first cycle capacity was enhanced (from 69 mAh/g to 115 mAh/g) as well as the capacity retention over cycling. Chapter 5 demonstrates a novel technique of MW-ST assisted coating of a thin (2-5nm) conformal coating of LiFePO4 on vanadium substituted LiCoPO4. Although the vanadium substitution was able to independently increase the performance of LiCoPO4, the materials still suffers from severe side reactions with the electrolyte. The coating of LiFePO4 effectively raises the Fermi energy of the cathode material above the high occupied molecular orbital (HOMO) of the electrolyte preventing side reactions and increase the coulombic efficiency to nearly 100%. Chapter 6 introduces a novel method of producing high surface area, electrically conductive, metal nanofoams via a MW-ST process. Nickel, copper, and silver metal nanofoams are made via an inexpensive yet scalable process whereby metal acetates are reduced by polyglycol under microwave irradiation. The nanofoams were characterized via BET, SEM, XRD, EDS, and TEM. The nanofoams have potential uses in many clean energy applications, particularly lithium-ion batteries. Chapter 7 introduces a new framework for making a new class of high capacity, low-cost alloying anodes for lithium ion batteries. A novel interdigitated metal foil anode (IMFA) in which a nanosized active material, such as tin, is interdigitated with an electrically conductive matrix, such as aluminum, is presented. The foils are formed by the rolling of a eutectic Al-Sn alloy into a foil, which is an extremely cheap and scalable process. The anodes demonstrate an approximately 70% increase in capacity compared to graphite over 100 cycles, at reasonably fast rates (C/5), and high coulombic efficiency (>99%). Finally, Chapter 8 gives a brief overview of the results of the prior work and proposes areas for future research
Book Synopsis Synthesis and Characterization of Carbon Nanotube Modified Electrode Materials for Li-ion Batteries by :
Download or read book Synthesis and Characterization of Carbon Nanotube Modified Electrode Materials for Li-ion Batteries written by and published by . This book was released on 2009 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, the Lithium ion (Li-ion) is the fastest growing and most promising rechargeable battery chemistry. For high current demands, there is an emphasis on the importance of very low cell resistance to allow unrestricted flow of current. The electrochemical performance of Li-ion batteries relies significantly on the properties of the cathode materials, the anode materials and the electrolytes. In this study, novel anode and cathode materials were synthesized and systematically studied for Li-ion battery application. Novel anode synthesis involved the substitution of the flat foil current collectors normally used by nano- or micro-wire arrays, as the higher surface area makes it possible to pack much more active material into an electrode. Ni or Cu wire arrays with wire thicknesses of 200 nm, 400 nm or 1 \03BCm were synthesised. Carbon nanotubes (CNTs) were chosen as the Li-insertion compound due to its high theoretical reversible lithium storage capacity. Synthesis of the Cu or Ni/CNT consolidated composite anodes were done using novel synthetic techniques, combining template synthesis via electrochemical deposition and chemical vapour deposition (CVD) techniques. XRD analysis of both the Ni and Cu wire arrays after carbon nanotube deposition, confirmed that the crystallinity of the wire arrays were not altered by the CVD of carbon nanotubes. The optimal results were obtained for the 200 nm Cu/CNT consolidated composite anode. The current density obtained for the Li de-intercalation (\03AFp) was 0.463 A/g. A reversible discharge capacity of 358 mAh/g was obtained in the subsequent charge/discharge cycling. The composite anode materials showed good charge/discharge cycling performances and a high capacity integrity was maintained in the cycling behaviour analyses.
Book Synopsis Investigations of Cathode Materials for Lithium-ion Batteries by : Dong Zhang
Download or read book Investigations of Cathode Materials for Lithium-ion Batteries written by Dong Zhang and published by . This book was released on 1999 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
