Designing and Understanding High-energy Fast-charging Lithium Batteries PDF Download
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Author: Hansen Wang
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Secondary battery systems based on lithium (Li)-ion chemistries have achieved great success with their broad applications in portable electronics, electric vehicles and grid storage during the past few decades. However, current Li-ion battery technology requires urgent improvements in two key aspects: fast charging capability and energy density. Fast charging of electric vehicles could significantly improve the recharging experience, but it is currently impossible to fully charge within 10 minutes without undermining cycle life. Further improvement in energy density could enhance vehicle range, but it calls for transition in chemistry to, for example, Li metal batteries that show intrinsically fast capacity decay. Therefore, researches have been focusing on understanding the failure mechanism during Li-ion battery fast charging, as well as pro-long the cycle life of higher energy Li metal battery systems. In Chapter 1, background will be introduced about the current status of efforts to high specific energy, fast charging Li batteries. In Chapter 2, the temperature dependence of equilibrium potential is revealed to impact the Li plating pattern on graphite anodes, directing potential designs to enable the extreme fast charging of Li-ion batteries. In chapters 3 and 4, designs of artificial "host" frameworks are introduced to stabilize the volume of Li metal anodes during cycling, improving the cycle life. In chapter 5 to 7, molecular designs of novel solvent molecules are discussed to enable highly stable liquid electrolytes with practical Li metal battery cycling performances. The design principles and working mechanisms of these new electrolytes will also be elaborated. Finally, future directions of EV battery developments will be outlooked.
Author: Hansen Wang
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Secondary battery systems based on lithium (Li)-ion chemistries have achieved great success with their broad applications in portable electronics, electric vehicles and grid storage during the past few decades. However, current Li-ion battery technology requires urgent improvements in two key aspects: fast charging capability and energy density. Fast charging of electric vehicles could significantly improve the recharging experience, but it is currently impossible to fully charge within 10 minutes without undermining cycle life. Further improvement in energy density could enhance vehicle range, but it calls for transition in chemistry to, for example, Li metal batteries that show intrinsically fast capacity decay. Therefore, researches have been focusing on understanding the failure mechanism during Li-ion battery fast charging, as well as pro-long the cycle life of higher energy Li metal battery systems. In Chapter 1, background will be introduced about the current status of efforts to high specific energy, fast charging Li batteries. In Chapter 2, the temperature dependence of equilibrium potential is revealed to impact the Li plating pattern on graphite anodes, directing potential designs to enable the extreme fast charging of Li-ion batteries. In chapters 3 and 4, designs of artificial "host" frameworks are introduced to stabilize the volume of Li metal anodes during cycling, improving the cycle life. In chapter 5 to 7, molecular designs of novel solvent molecules are discussed to enable highly stable liquid electrolytes with practical Li metal battery cycling performances. The design principles and working mechanisms of these new electrolytes will also be elaborated. Finally, future directions of EV battery developments will be outlooked.
Author: Shriram Santhanagopalan
Publisher: Artech House
ISBN: 1608077144
Category : Technology & Engineering
Languages : en
Pages : 241
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Book Description
This new resource provides you with an introduction to battery design and test considerations for large-scale automotive, aerospace, and grid applications. It details the logistics of designing a professional, large, Lithium-ion battery pack, primarily for the automotive industry, but also for non-automotive applications. Topics such as thermal management for such high-energy and high-power units are covered extensively, including detailed design examples. Every aspect of battery design and analysis is presented from a hands-on perspective. The authors work extensively with engineers in the field and this book is a direct response to frequently-received queries. With the authors’ unique expertise in areas such as battery thermal evaluation and design, physics-based modeling, and life and reliability assessment and prediction, this book is sure to provide you with essential, practical information on understanding, designing, and building large format Lithium-ion battery management systems.
Author: Teng Liu
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This dissertation reveals how would thermal stimulation method enhance the fast-charging capability of Li-ion batteries (LiBs) and demonstrate durable, 10~15 minutes fast charging for high energy LiBs. The main challenge of enabling fast charging high-energy LiBs is how to break through the trade-offs between energy density, rate capability, and cycle life. On the one hand, some high-power batteries could be charged within 10 minutes, while the energy density will be severely undermined. On the other, it usually takes hours to charge the high-energy batteries to meet industrially acceptable cycle numbers. In this study, starting from the most common commercial LiBs with layered oxide cathode (LiNi1-X-YMnXCoYO2) and graphite (Gr) anode, it is demonstrated that the thermal stimulation method can effectively boost the rate capability of the batteries and achieve thousands of fast-charging cycles. In an attempt to unravel the phenomena underpinning the degradation of high-energy LiBs under fast charging, we tested LiBs with different areal loadings and developed a numerical model to predict the fast-charging performance under different thermal conditions. Specifically: Chapter 2 introduces how to design a thermal stimulation protocol to achieve fast charging and why it works. For electric vehicle (EV) batteries that undergo fast charging, the difference between their charging and discharging currents can reach an order of magnitude or more. In order to cope with the highly asymmetrical current profiles, we propose an asymmetric temperature modulate (ATM) method, which thermally stimulates the batteries to elevated temperatures during fast charging and keeps the batteries around the ambient temperature for the rest of the time. Using the ATM method, we demonstrated that commercial LiBs that can only survive 60 fast-charging cycles at room temperature could last for thousands of cycles with proper thermal modulation. Chapter 3 looks into the challenges when fast charging high-energy LiBs and demonstrates how to overcome the trade-offs between fast-charging performance and energy density. State-of-the-art (SoA) high-energy batteries use thick electrodes to increase the specific energy. When using the ATM method to charge LiBs with high areal capacities, capacity rollover could happen even with small capacity retention, causing short cycle life. To overcome the mass transport limitation caused by thick electrodes, we adopted an electrolyte with a higher transference number and increased the porosity of the negative electrodes. The high-energy LiB (263 Wh/kg) with enhanced ion transport could withstand 4C charging and last for more than 2,000 cycles without capacity rollover. Chapter 4 discusses the interplay between thermal management and the fast-charging performance with an electrochemical-thermal (ECT) coupled model. Besides minimizing lithium plating, it is also favorable to elevate the battery temperature during fast charging in consideration of thermal management. Elevating the charging temperature from 30°C to 60°C will reduce the average heat generation rate by more than three times. Moreover, if we allow the battery temperature to increase during fast charging, the cooling needs and the temperature variation inside the battery could be further reduced. Chapter 5 shows how to implement a feasible design for urban air mobility (UAM) using fast charging LiBs. The battery pack for electric aircraft should be light-weighted; by using fast-charging LiBs, we can adopt a smaller battery pack and charge it more frequently. We designed a cycling protocol for short-range electric vertical take-off and landing aircraft (eVTOL). The battery could be recharged in 5 minutes after each 50-mile (80-km) trip and demonstrated remarkable cycle life with the ATM method. Chapter 6 concludes the dissertation and proposes possible advancements in the future.
Author: Quan Ouyang
Publisher: Springer Nature
ISBN: 9811970599
Category : Technology & Engineering
Languages : en
Pages : 182
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Book Description
In this book, the most state-of-the-art advanced model-based charging control technologies for lithium-ion batteries are explained from the fundamental theories to practical designs and applications, especially on the battery modelling, user-involved, and fast charging control algorithm design. Moreover, some other necessary design considerations, such as battery pack charging control with centralized and distributed structures, are also introduced to provide excellent solutions for improving the charging performance and extending the lifetime of the batteries/battery packs. Finally, some future directions are mentioned in brief. This book summarizes the model-based charging control technologies from the cell level to the battery pack level. From this book, readers interested in battery management can have a broad view of modern battery charging technologies. Readers who have no experience in battery management can learn the basic concept, analysis methods, and design principles of battery charging systems. Even for the readers who are occupied in this area, this book also provides rich knowledge on engineering applications and future trends of battery charging technologies.
Author: Asian Development Bank
Publisher: Asian Development Bank
ISBN: 9292614711
Category : Technology & Engineering
Languages : en
Pages : 123
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Book Description
This handbook serves as a guide to deploying battery energy storage technologies, specifically for distributed energy resources and flexibility resources. Battery energy storage technology is the most promising, rapidly developed technology as it provides higher efficiency and ease of control. With energy transition through decarbonization and decentralization, energy storage plays a significant role to enhance grid efficiency by alleviating volatility from demand and supply. Energy storage also contributes to the grid integration of renewable energy and promotion of microgrid.
Author:
Publisher:
ISBN: 9780968211847
Category :
Languages : en
Pages : 360
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Book Description
Author: Jiuchun Jiang
Publisher: John Wiley & Sons
ISBN: 1118414810
Category : Technology & Engineering
Languages : en
Pages : 296
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Book Description
A theoretical and technical guide to the electric vehicle lithium-ion battery management system Covers the timely topic of battery management systems for lithium batteries. After introducing the problem and basic background theory, it discusses battery modeling and state estimation. In addition to theoretical modeling it also contains practical information on charging and discharging control technology, cell equalisation and application to electric vehicles, and a discussion of the key technologies and research methods of the lithium-ion power battery management system. The author systematically expounds the theory knowledge included in the lithium-ion battery management systems and its practical application in electric vehicles, describing the theoretical connotation and practical application of the battery management systems. Selected graphics in the book are directly derived from the real vehicle tests. Through comparative analysis of the different system structures and different graphic symbols, related concepts are clear and the understanding of the battery management systems is enhanced. Contents include: key technologies and the difficulty point of vehicle power battery management system; lithium-ion battery performance modeling and simulation; the estimation theory and methods of the lithium-ion battery state of charge, state of energy, state of health and peak power; lithium-ion battery charge and discharge control technology; consistent evaluation and equalization techniques of the battery pack; battery management system design and application in electric vehicles. A theoretical and technical guide to the electric vehicle lithium-ion battery management system Using simulation technology, schematic diagrams and case studies, the basic concepts are described clearly and offer detailed analysis of battery charge and discharge control principles Equips the reader with the understanding and concept of the power battery, providing a clear cognition of the application and management of lithium ion batteries in electric vehicles Arms audiences with lots of case studies Essential reading for Researchers and professionals working in energy technologies, utility planners and system engineers.
Author: Katerina E. Aifantis
Publisher: John Wiley & Sons
ISBN: 9783527630028
Category : Technology & Engineering
Languages : en
Pages : 296
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Book Description
Materials Engineering for High Density Energy Storage provides first-hand knowledge about the design of safe and powerful batteries and the methods and approaches for enhancing the performance of next-generation batteries. The book explores how the innovative approaches currently employed, including thin films, nanoparticles and nanocomposites, are paving new ways to performance improvement. The topic's tremendous application potential will appeal to a broad audience, including materials scientists, physicists, electrochemists, libraries, and graduate students.
Author: Gianfranco Pistoia
Publisher: Newnes
ISBN: 0444595163
Category : Technology & Engineering
Languages : en
Pages : 659
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Book Description
Lithium-Ion Batteries features an in-depth description of different lithium-ion applications, including important features such as safety and reliability. This title acquaints readers with the numerous and often consumer-oriented applications of this widespread battery type. Lithium-Ion Batteries also explores the concepts of nanostructured materials, as well as the importance of battery management systems. This handbook is an invaluable resource for electrochemical engineers and battery and fuel cell experts everywhere, from research institutions and universities to a worldwide array of professional industries. Contains all applications of consumer and industrial lithium-ion batteries, including reviews, in a single volume Features contributions from the world's leading industry and research experts Presents executive summaries of specific case studies Covers information on basic research and application approaches
Author: Zhi Wei Seh
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Rechargeable lithium-ion batteries have transformed the world of portable electronics and consumer devices today, but their specific energy and cycle life remain insufficient for many emerging, modern-day applications such as electric vehicles and grid energy storage. Lithium-sulfur (Li-S) batteries represent a very promising technology for these applications because their theoretical specific energy is about 7 times that of lithium-ion batteries today. However, the challenges of S and Li2S cathodes include: (1) the formation of intermediate lithium polysulfide species which dissolve into the electrolyte during cycling and (2) the low electronic conductivity of S and Li2S. Thus, there is an urgent need for novel encapsulation materials and morphologies for these cathodes that can effectively confine the polysulfide species and facilitate electronic conduction. In this thesis, I will present my work on developing high-energy Li-S batteries, from theoretical understanding to materials design. First, I will present results from theoretical ab initio simulations which enable the systematic screening of promising encapsulation materials. Next, I will present four different designs of S and Li2S cathodes. The first design is that of S-TiO2 yolk-shell nanostructures, which uses oxygen-rich TiO2 as the encapsulation material. The novelty of this yolk-shell cathode lies in the precise engineering of internal void space to accommodate the volumetric expansion of S during lithiation, enabling long cycle life of 1,000 cycles to be achieved. The second and third designs: Li2S-graphene oxide and Li2S-polypyrrole composite structures, use oxygen-rich and nitrogen-rich materials respectively to encapsulate fully-lithiated and fully-expanded Li2S cathodes. Using these cathodes, we demonstrate high specific capacity and stable cycling performance over hundreds of cycles. The fourth design: Li2S-TiS2 core-shell nanostructures, uses highly-conductive and sulfur-rich TiS2 as an effective 2D encapsulation material. This cathode not only exhibits high rate capability of 4C (fast charge/discharge in 15 min), but also high areal capacity of 3.0 mAh/cm2, both of which are on par with commercial standards today. These works pave the way for the future development of high-performance and long-lasting rechargeable batteries.
