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Molecular Bulk And Surface Modification Of Ni Rich Cathode Active Materials For Application In Lithium Ion Batteries
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Book Synopsis Molecular Bulk and Surface Modification of Ni-rich Cathode Active Materials for Application in Lithium-ion Batteries by : Mert Dalkilic
Download or read book Molecular Bulk and Surface Modification of Ni-rich Cathode Active Materials for Application in Lithium-ion Batteries written by Mert Dalkilic and published by . This book was released on 2023 with total page 0 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 Surface Coatings of Nickel-rich NCM Based Cathode Active Materials for Improved Electrochemical Performance of Lithium-ion Batteries by : Rajendra Negi
Download or read book Surface Coatings of Nickel-rich NCM Based Cathode Active Materials for Improved Electrochemical Performance of Lithium-ion Batteries written by Rajendra Negi and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Batteries for Sustainability by : Ralph J. Brodd
Download or read book Batteries for Sustainability written by Ralph J. Brodd and published by Springer Science & Business Media. This book was released on 2012-12-12 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Batteries that can store electricity from solar and wind generation farms are a key component of a sustainable energy strategy. Featuring 15 peer-reviewed entries from the Encyclopedia of Sustainability Science and Technology, this book presents a wide range of battery types and components, from nanocarbons for supercapacitors to lead acid battery systems and technology. Worldwide experts provides a snapshot-in-time of the state-of-the art in battery-related R&D, with a particular focus on rechargeable batteries. Such batteries can store electrical energy generated by renewable energy sources such as solar, wind, and hydropower installations with high efficiency and release it on demand. They are efficient, non-polluting, self-contained devices, and their components can be recovered and used to recreate battery systems. Coverage also highlights the significant efforts currently underway to adapt battery technology to power cars, trucks and buses in order to eliminate pollution from petroleum combustion. Written for an audience of undergraduate and graduate students, researchers, and industry experts, Batteries for Sustainability is an invaluable one-stop reference to this essential area of energy technology.
Book Synopsis From Intrinsic to Extrinsic Design of Lithium-Ion Battery Layered Oxide Cathode Material Via Doping Strategies by : Chul-Ho Jung
Download or read book From Intrinsic to Extrinsic Design of Lithium-Ion Battery Layered Oxide Cathode Material Via Doping Strategies written by Chul-Ho Jung and published by Springer Nature. This book was released on 2022-10-20 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the comprehensive understanding of Ni-rich layered oxide of lithium-ion batteries cathodes materials, especially focusing on the effect of dopant on the intrinsic and extrinsic effect to its host materials. This book can be divided into three parts, that is, 1. overall understanding of layered oxide system, 2. intrinsic effect of dopant on layered oxides, and 3. extrinsic effect of dopant on layered oxides. To truly understand and discover the fundamental solution (e.g. doping) to improve the Ni-rich layered oxides cathodic performance, understanding the foundation of layered oxide degradation mechanism is the key, thus, the first chapter focuses on discovering the true degradation mechanisms of layered oxides systems. Then, the second and third chapter deals with the effect of dopant on alleviating the fundamental degradation mechanism of Ni-rich layered oxides, which we believe is the first insight ever been provided. The content described in this book will provide research insight to develop high-performance Ni-rich layered oxide cathode materials and serve as a guide for those who study energy storage systems.
Book Synopsis Modification of Ni-Rich FCG NMC and NCA Cathodes by Atomic Layer Deposition by :
Download or read book Modification of Ni-Rich FCG NMC and NCA Cathodes by Atomic Layer Deposition written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The energy density of current lithium-ion batteries (LIBs) based on layered LiMO2 cathodes (M=Ni, Mn, Co: NMC; M=Ni, Co, Al: NCA) needs to be improved significantly in order to compete with internal combustion engines and allow for widespread implementation of electric vehicles (EVs). In this report, we show that atomic layer deposition (ALD) of titania (TiO2) and alumina (Al2O3) on Ni-rich FCG NMC and NCA active material particles could substantially improve LIB performance and allow for increased upper cutoff voltage (UCV) during charging, which delivers significantly increased specific energy utilization. Our results show that Al2O3 coating improved the NMC cycling performance by 40% and the NCA cycling performance by 34% at 1C/1C with respectively 4.35V and 4.4V UCV in 2Ah pouch cells. High resolution TEM/SAED structural characterization revealed that Al2O3 coatings prevented surface-initiated layered-to-spinel phase transitions in coated materials which were prevalent in uncoated materials. Lastly, EIS confirmed that Al2O3-coated materials had significantly lower increase in the charge transfer component of impedance during cycling. In conclusion, the ability to mitigate degradation mechanisms for Ni-rich NMC and NCA illustrated in this report provides insight into a method to enable the performance of high-voltage LIBs.
Book Synopsis Modified Nickel-rich Lithium-nickel-manganese-cobalt-oxide Cathode Active Material for Lithium Ion Batteries by : Matthias Eilers-Rethwisch
Download or read book Modified Nickel-rich Lithium-nickel-manganese-cobalt-oxide Cathode Active Material for Lithium Ion Batteries written by Matthias Eilers-Rethwisch and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Enabling Aqueous Processing of Ni-rich Layered Oxide Cathodes for Lithium Ion Batteries by Tailor-made Surface Modifications by : Friederike Reißig
Download or read book Enabling Aqueous Processing of Ni-rich Layered Oxide Cathodes for Lithium Ion Batteries by Tailor-made Surface Modifications written by Friederike Reißig and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Nanostructured Nickel-Rich Cathode Materials for Fast-Charging Lithium-Ion Batteries and of High-Conductivity Doped Semiconducting Polymers for Energy Applications by : Victoria Mignon Basile
Download or read book Development of Nanostructured Nickel-Rich Cathode Materials for Fast-Charging Lithium-Ion Batteries and of High-Conductivity Doped Semiconducting Polymers for Energy Applications written by Victoria Mignon Basile and published by . This book was released on 2021 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of new materials for energy applications is necessary to create new solutions to minimize our use of fossil fuels. This dissertation is composed of two separate projects that use different materials to address energy challenges. The first part focuses on nanostructured nickel-rich cathode materials for use in fast-charging lithium-ion batteries. Fast-charging batteries are desired for use in electric vehicles to shorten charging times from hours to minutes, which could help with their larger scale implementation and reduction of fossil fuel use. Fast-charging can be achieved by nanostructuring certain battery materials, which decreases lithium-ion diffusion lengths and can help suppress slow discontinuous, first-order phase transitions, while retaining high capacity. This behavior has been termed pseudocapacitance. While a number of pseudocapacitive anodes have been produced, there are few examples of high-capacity pseudocapacitive cathodes. Here, we studied the nickel-rich cathode materials LiNi0.80Co0.15Al0.05O2 (NCA) and LiNi0.xMn0.yCo0.zO2 (NMCxyz), both of which are high-capacity materials that show suppressed discontinuous phase transitions. Because of this favorable continuous phase transition behavior, we hypothesized that only modest decreases in particle sizes would be needed to develop pseudocapacitive behavior. We used polymer templating with a sol-gel synthesis to synthesize nanoporous NCA and NMC materials with decreased particle sizes. We then studied the effect of the particle size on the electrochemical kinetic properties of the material and cycling behavior at fast-charging rates. The results showed improved (dis)charge kinetics compared to the bulk and identified characteristics of pseudocapacitance. Nanostructured NCA cathodes were also paired with a fast-charging pseudocapacitive anode to demonstrate their potential for commercial full-cell fast-charging devices.The second part of this dissertation studies semiconducting polymers, which have potential applications in organic electronics, such as solar cells and thermoelectrics. These materials are interesting for energy applications because they are flexible, low-cost, and solution-processable. While semiconducting polymers show low conductivity, molecular doping can improve conductivity by adding mobile charge carriers. Here a novel redox-tunable dodecaborane-based dopant was introduced into a semiconducting polymer network and the resulting electronic, structural, and optical properties were studied. Large and strongly-oxidizing dopants were found to dramatically increase conductivity by producing more and higher-mobility charge carriers.
Book Synopsis Studies on Anionic Redox in Li-Rich Cathode Materials of Li-Ion Batteries by : Biao Li
Download or read book Studies on Anionic Redox in Li-Rich Cathode Materials of Li-Ion Batteries written by Biao Li and published by Springer. This book was released on 2018-12-13 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents studies and discussions on anionic redox, which can be used to boost the capacities of cathode electrodes by providing extra electron transfer. This theoretically and practically significant book facilitates the implementation of anionic redox in electrodes for real-world use and accelerates the development of high-energy-density lithium-ion batteries. Lithium-ion batteries, as energy storage systems, are playing a more and more important role in powering modern society. However, their energy density is still limited by the low specific capacity of the cathode electrodes. Based on a profound understanding of band theory, the author has achieved considerable advances in tuning the redox process of lithium-rich electrodes to obtain enhanced electrochemical performance, identifying both the stability mechanism of anionic redox in lithium-rich cathode materials, and its activation mechanism in these electrode systems.
Book Synopsis Consequences of Combinatorial Studies of Positive Electrodes for Li-ion Batteries by : Eric McCalla
Download or read book Consequences of Combinatorial Studies of Positive Electrodes for Li-ion Batteries written by Eric McCalla and published by Springer Science & Business Media. This book was released on 2014-04-11 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Li-Co-Mn-Ni oxides have been of extreme interest as potential positive electrode materials for next generation Li-ion batteries. Though many promising materials have been discovered and studied extensively, much debate remains in the literature about the structures of these materials. There is no consensus as to whether the lithium-rich layered materials are single-phase or form a layered-layered composite on the few nanometer length-scales. Much of this debate came about because no phase diagrams existed to describe these systems under the synthesis conditions used to make electrode materials. Detailed in this thesis are the complete Li-Co-Mn-O and Li-Mn-Ni-O phase diagrams generated by way of the combinatorial synthesis of mg-scale samples at over five hundred compositions characterized with X-ray diffraction. Selected bulk samples were used to confirm that the findings are relevant to synthesis conditions used commercially. The results help resolve a number of points of confusion and contradiction in the literature. Amongst other important findings, the compositions and synthesis conditions giving rise to layered-layered nano-composites are presented and electrochemical results are used to show how better electrode materials can be achieved by making samples in the single phase-layered regions.
Book Synopsis Lithium-Ion Batteries: Basics and Applications by : Reiner Korthauer
Download or read book Lithium-Ion Batteries: Basics and Applications written by Reiner Korthauer and published by Springer. This book was released on 2018-08-07 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The handbook focuses on a complete outline of lithium-ion batteries. Just before starting with an exposition of the fundamentals of this system, the book gives a short explanation of the newest cell generation. The most important elements are described as negative / positive electrode materials, electrolytes, seals and separators. The battery disconnect unit and the battery management system are important parts of modern lithium-ion batteries. An economical, faultless and efficient battery production is a must today and is represented with one chapter in the handbook. Cross-cutting issues like electrical, chemical, functional safety are further topics. Last but not least standards and transportation themes are the final chapters of the handbook. The different topics of the handbook provide a good knowledge base not only for those working daily on electrochemical energy storage, but also to scientists, engineers and students concerned in modern battery systems.
Book Synopsis High Energy Density Cathode Active Materials for Lithium-ion Batteries by : Mehmet Nurullah Ates
Download or read book High Energy Density Cathode Active Materials for Lithium-ion Batteries written by Mehmet Nurullah Ates and published by . This book was released on 2015 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Renewable energy sources such as solar energy, wind and hydroelectric power are increasingly being developed as essential energy alternatives to alleviate the deleterious effects of greenhouse gases in the globe. Large scale energy storage is an indispensable component of renewable energy sources and in this context, Li-ion batteries (LIBs), due to their high energy and power densities and long cycle life, have spurred great interest. Current Li-ion battery technology employs lithium cobalt oxide, LiCoO2, or one of its congeners, in which some of the Co is substituted with Ni and/or Mn as cathode active material. The deficiencies of LiCoO2 include: i-) low capacity with only 0.5 mole of Li+ is being reversibly used in the battery leading to 140 mAh/g discharge capacity at low to medium rates, ii-) high cost, and iii-) environmental concerns arising from the harmful physiological effects of Co metal. In order to overcome these deficiencies of LiCoO2, Li-rich layered metal dioxides, also known as layered-layered lithiated metal oxide composite compound, formulated as xLi2MnO3.(1-x)LiMO2 (M=Mn, Ni or Co), have been proposed recently. This dissertation presents an account of investigations leading to advanced materials which overcome the deficiencies of this class of high energy density Li-ion battery cathodes. Chapter 1 discusses the fundamental aspects of generic battery systems and elaborates on the current state of the art of rechargeable Li batteries. Chapter 2 deals with the discovery of the material 0.3Li2MnO3.0.7LiNi0.5Co0.5O2 (LLNC) that allowed us to conclude which segment of the lithium rich layered composite metal oxide is responsible for structural transformation from the layered to spinel phase during charge/discharge cycling. The crystal structure and electrochemistry of this new cathode active material in Li cells have been compared to that of 0.3Li2MnO3.0.7LiMn0.33Ni0.33Co0.33O2 (LLNMC). In LLNC, the removal of Mn from the LiMO2 (M=transition metal) segment allowed us to determine the identity of the manganese oxide moiety in it that triggers the layered to spinel conversion during cycling. The new material LLNC resists the layered to spinel structural transformation under conditions in which LLNMC does. X-ray diffraction (XRD) patterns revealed that both compounds, synthesized as approximately 300 nm crystals, have identical super lattice ordering attributed to Li2MnO3 existence. Using X-ray absorption (XAS) spectroscopy we elucidated the oxidation states of the K edges of Ni and Mn in the two materials with respect to different charge and discharge states. The XAS data along with electrochemical results revealed that Mn atoms are not present in the LiMO2 structural segment in LLNC. Electrochemical cycling data from Li cells further revealed that the absence of Mn in the LiMO2 segment significantly improves the rate capabilities of LLNC with good capacity maintenance during long term cycling. Removing the Mn from the LiMO2 segment of lithium rich layered metal oxides appears to be a holistic strategy for improving the structural robustness and rate capabilities of these high capacity cathode materials for Li-ion batteries. Chapter 3 examines the effect of alkali ion doping (Na+) into the cathode material of the composition 0.3Li2MnO3.0.7LiMn0.33Ni0.33Co0.33O2 (LLNMC). The 5 wt. % Na doped material, formulated as 0.3Li2MnO3.0.7Li0.97Na0.03Mn0.33Ni0.33Co0.33O2, was compared to its counterpart without Na doping. The discharge rate capability of the LLNMC was greatly improved at both room temperature and 50 0C with the Na doping. The Na doped material exhibited significantly higher electronic conductivity than its un-doped analog as evidenced by dc electronic conductivity data and AC impedance of Li cells. Charge/discharge cycling results of Li cells containing these cathode materials at 50 0C indicated that the voltage decay of LLNMC, accompanied by a layer to spinel structural conversion, was mitigated with Na doping. X-ray diffraction analysis revealed that ionic exchange of Na occurs upon contact of the cathode material with the electrolyte and produces a volume expansion of the crystal lattice which triggers a favorable metal (probably Ni) migration to Li depleted regions during electrochemical oxidation of Li2MnO3 in the first charge. X-ray absorption near edge spectra (XANES) data showed that Na doped NMC has better Ni reduction efficiency to provide higher rate capability. Extended X-ray absorption fine spectra (EXAFS) data supported this conclusion by showing that in the case of Na doped LLNMC, the structure has a larger crystal cage allowing for better metal migration into the Li depleted regions located in the layered unit cell of C2/m space group. XANES of Mn K-edge supported by pre-edge analysis also revealed that during charging of the electrode, the Na doped NMC was oxidized to a higher Mn valence state compared to its undoped counterpart. The results of a comprehensive electrochemical and structural investigations of a wide range of lithium rich layered metal oxide cathode active materials, xLi2MnO3.(1-x)LiMnaNibCocO2 (where x, a, b and c vary) are reported in Chapter 4. In order to identify the cathode material having the optimum Li cell performance we first varied the ratio between Li2MnO3 and LiMO2 segments of the composite oxides while maintaining the same metal ratio residing within their LiMO2 segments. The materials with the overall composition 0.5Li2MnO3.0.5LiMO2 containing 0.5 mole of Li2MnO3 per mole of the composite metal oxide were found to be the optimum in terms of electrochemical performance. The electrochemical properties of these materials were further tuned by changing the relative amounts of Mn, Ni and Co in the LiMO2 segment to produce xLi2MnO3.(1-x)LiMn0.50Ni0.35Co0.15O2 with enhanced capacities and rate capabilities. The rate capability of the lithium rich compound in which x=0.3 was further increased by preparing electrodes with about 2 weight-percent multiwall carbon nanotube in the electrode. Lithium cells prepared with such electrodes were cycled at the 4C rate with little fade in capacity for over one hundred cycles. In Chapter 5, the results of a new synthesis technique, called self-ignition combustion (SIC), that dramatically enhanced the rate capabilities of a lithium rich layered metal oxide compound we prepared are discussed. In this chapter, we report a high rate Li-rich layered manganese nickel cobalt (MNC) cathode material of the composition 0.5Li2MnO3.0.5LiMn0.5Ni0.35Co 0.15O2, termed SIC-MNC cathode material for Li-ion batteries with discharge capacities of 200, 250, and 290 mAh/g at C, C/4 and C/20 rates, respectively. This high rate discharge performance combined with little capacity fade during long term cycling is unprecedented for this class of Li-ion cathode materials. The exceptional electrochemistry of the Li-rich SIC-MNC in Li-ion cells is attributed to its open porous morphology and high electronic conductivity. The structure of the material investigated by means of X-ray diffraction, High Resolution Transmission Electron Microscopy (HRTEM) and X-ray absorption spectroscopy combined with electrochemical data revealed that the porous morphology was effective in allowing electrolyte penetration through the particle grains to provide high Li+ transport in tandem with high electronic conductivity for high rate discharge. Extended cycling behavior and structural phase transition of the new material were further examined through Field Emission Scanning Electron Microscopy (FESEM), XRD, XAS and HRTEM. The new SIC-MNC cathode represents the long sought after next generation cathode material for Li-ion batteries with pecific energy exceeding 400 Wh/kg or energy density over 1000 Wh/l. The conclusion and future directions are presented in Chapter 6.
Book Synopsis Nanomaterials for Lithium-Ion Batteries by : Rachid Yazami
Download or read book Nanomaterials for Lithium-Ion Batteries written by Rachid Yazami and published by CRC Press. This book was released on 2013-10-08 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the most recent advances in the science and technology of nanostructured materials for lithium-ion application. With contributions from renowned scientists and technologists, the chapters discuss state-of-the-art research on nanostructured anode and cathode materials, some already used in commercial batteries and others still in development. They include nanostructured anode materials based on Si, Ge, Sn, and other metals and metal oxides together with cathode materials of olivine, the hexagonal and spinel crystal structures.
Book Synopsis Redox-assisted Synthesis and Surface Oxidation for Ni-Rich NCM Cathode Applied in Lithium Ion Batteries by : Ya-Ting Tsai
Download or read book Redox-assisted Synthesis and Surface Oxidation for Ni-Rich NCM Cathode Applied in Lithium Ion Batteries written by Ya-Ting Tsai and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis STUDY AND DEVELOPMENT OF LAYERED LI-NI-MN-CO OXIDE POSITIVE ELECTRODE MATERIALS FOR LITHIUM ION BATTERIES. by : Jing Li
Download or read book STUDY AND DEVELOPMENT OF LAYERED LI-NI-MN-CO OXIDE POSITIVE ELECTRODE MATERIALS FOR LITHIUM ION BATTERIES. written by Jing Li and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Layered Li-Ni-Mn-Co oxides (NMC) with low cobalt content are promising positive electrode materials for Li-ion batteries. However, the detailed structural properties of these materials are still debated. This thesis work, in part, focused on a systematic study of layered NMC samples to understand the dependence of electrochemical properties on structure and transition metal composition, as well as the structural evolution of layered NMC materials during lithium intercalation. The calendar and cycle lifetimes of lithium-ion cells are affected by the structural stability of active electrode materials as well as parasitic reactions between the charged electrode materials and electrolyte that occur in lithium-ion batteries. It is necessary to explore the failure mechanisms of layered NMC/graphite cells to guide future improvements. This thesis work, in part, thoroughly studied the failure mechanisms of LiNi0.8Mn0.1Co0.1O2/graphite cells from the perspectives of the bulk structural stability, surface structure reconstruction and electrolyte oxidation. Core-shell (CS) structured positive electrode materials based on layered NMC could be the next generation of positive electrode materials for high energy density lithium-ion batteries. This is because a high energy core material (Ni-rich NMC), with poor stability against the electrolyte, can be protected by a thin layer of a stable and active shell material with lower Ni and higher Mn content. A large part of this thesis focused on the development of CS materials using Li-rich and Mn-rich materials as the protecting shell for voltages above 4.5 V, and on an understanding of inter-diffusion phenomena observed during the synthesis of core-shell materials.
Book Synopsis Surface Modifications of Novel Electroactive Materials for Applications in Lithium-ion Batteries and Water Purification by : Laura Elizabeth Slaymaker
Download or read book Surface Modifications of Novel Electroactive Materials for Applications in Lithium-ion Batteries and Water Purification written by Laura Elizabeth Slaymaker and published by . This book was released on 2017 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electroactive materials, such as those found in lithium-ion batteries and devices for water purification, are important for everyday life. Lithium-ion batteries are ubiquitous in the technology of today and provide a means to store energy created from renewable sources to lessen our dependence on fossil fuels. However, materials used in batteries lose capacity over time due to degradation reactions that occur inside the battery. Favorable formation of the solid electrolyte interphase (SEI) layer on the anode, and the analogous cathode electrolyte interphase (CEI) layer on the cathode, is critical to the operation of a battery. This work investigated forming a cross-linked surface layer on silicon nanoparticles, a next-generation, high-capacity anode material, to prevent continual SEI layer formation. This work also examined face-dependent reactivity of a common cathode material, LiCoO2, with an Al2O3 coating deposited via atomic layer deposition. It was found that the edge plane had nearly twice as thick of an Al2O3 coating as compared to the basal plane of LiCoO2. Finally, this work showed that a conductive polymer electrode could produce hydroxyl radicals for water purification and was compared to boron-doped diamond electrodes, one of the best performing hydroxyl radical producing electrodes.
