Lithium Metal Stabilization For Next Generation Lithium Based Batteries From Fundamental Chemistry To Advanced Characterization And Effective Protection

Author : Yu Yan
Publisher : OAE Publishing Inc.
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4./5 ( download)

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Download or read book Lithium metal stabilization for next-generation lithium-based batteries: from fundamental chemistry to advanced characterization and effective protection written by Yu Yan and published by OAE Publishing Inc.. This book was released on 2023-01-11 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium (Li) metal-based rechargeable batteries hold significant promise to meet the ever-increasing demands for portable electronic devices, electric vehicles and grid-scale energy storage, making them the optimal alternatives for next-generation secondary batteries. Nevertheless, Li metal anodes currently suffer from major drawbacks, including safety concerns, capacity decay and lifespan degradation, which arise from uncontrollable dendrite growth, notorious side reactions and infinite volume variation, thereby limiting their current practical application. Numerous critical endeavors from different perspectives have been dedicated to developing highly stable Li metal anodes. Herein, a comprehensive overview of Li metal anodes regarding fundamental mechanisms, scientific challenges, characterization techniques, theoretical investigations and advanced strategies is systematically presented. First, the basic working principles of Li metal-based batteries are introduced. Specific attention is then paid to the fundamental understanding of and challenges facing Li metal anodes. Accordingly, advanced characterization approaches and theoretical computations are introduced to understand the fundamental mechanisms of dendrite growth and parasitic reactions. Recent key progress in Li anode protection is then comprehensively summarized and categorized to generate an overview of the respective superiorities and limitations of the various strategies. Furthermore, this review concludes the remaining obstacles and potential research directions for inspiring the innovation of Li metal anodes and endeavors to accomplish the practical application of next-generation Li-based batteries.

Author : Jiaxiang Liu
Publisher : OAE Publishing Inc.
ISBN 13 :
Total Pages : 27 pages
Book Rating : 4./5 ( download)

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Download or read book Recent advances in lithiophilic materials: material design and prospects for lithium metal anode application written by Jiaxiang Liu and published by OAE Publishing Inc.. This book was released on 2023-05-19 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid development of electronic technology and energy industry promotes the increasing desire for energy storage systems with high energy density, thus calling for the exploration of lithium metal anode. However, the enormous challenges, such as uncontrollable lithium deposition, side reaction, infinite volume change and dendrite generation, hinders its application. To address these problems, the deposition behavior of lithium must be exactly controlled and the anode/electrolyte interface must be stabilized. The deposition of lithium is a multi-step process influenced by multi-physical fields, where nucleation is the key to final morphology. Hence, increasing investigations have focused on the employment of lithiophilic materials that can regulate lithium nucleation in recent years. The lithiophilic materials introduced into the deposition hosts or solid electrolyte interphases can regulate the nucleation overpotential and facilitate uniform deposition. However, the concept of lithiophilicity is still undefined and the mechanism is still unrevealed. In this review, the recent advances in the regulation mechanisms of lithiophilicity are discussed, and the applications of lithiophilic materials in hosts and protective interphases are summarized. The in-depth exploration of lithiophilic materials can enhance our understanding of the deposition behavior of lithium and pave the way for practical lithium metal batteries.

Author : Yayuan Liu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.38/5 ( download)

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Download or read book Materials Design and Fundamental Understanding of Lithium Metal Anode for Next-generation Batteries written by Yayuan Liu and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium batteries profoundly impact our society, from portable electronics to the electrification of transportation and even to grid−scale energy storage for intermittent renewable energies. In order to achieve much higher energy density than the state−of−the−art, new battery chemistries are currently being actively investigated. Among all the possible material choices, metallic lithium is the ultimate candidate for battery anode, thanks to its highest theoretical capacity. Therefore, after falling into oblivion for several decades due to safety concerns, metallic Li is now ready for a revival. In the first chapter, I introduce the working mechanisms and limitations of the state−of−the−art battery chemistries and provide an overview of promising new battery chemistries based on metallic lithium anode. The current status of lithium metal anode research is also comprehensively summarized. In the second chapter, I discuss one particular failure mode of metallic lithium anode that has long been overlooked by the battery community, which is the infinite relative volume change of the electrode during cycling. To tackle this problem, novel three−dimensional lithium metal−host material composite designs will be demonstrated. Chapter three focuses on further improving the electrochemical performance of three−dimensional lithium metal anodes with surface coatings. Two examples of lithium metal coatings are given, which have been demonstrated effective for protecting reactive lithium from parasitic reactions with liquid electrolytes and mechanically suppressing nonuniform lithium deposition morphology. Chapter four discusses how the physiochemical properties of the solid−electrolyte interphase, dictated by electrolyte composition, affect the electrochemical behavior of metallic lithium. A special electrolyte additive has been discovered to enable high efficiency lithium cycling in carbonate−based electrolytes used exclusively in almost all commercial lithium-ion batteries. Moreover, the mechanisms behind the improved performance have been studied based on the structure, ion−transport properties, and charge−transfer kinetics of the modified interfacial environment using advanced characterization techniques. In Chapter five, I explore a paradigm shift in designing solid−state lithium metal batteries based on three−dimensional lithium architecture and a flowable interfacial layer. The new design concept can be generally applied to various solid electrolyte systems and the resulting solid-state batteries are capable of high−capacity, high−power operations. In the final part of the dissertation, I present my perspectives and outlooks for the future research in this field. The commercialization of high−energy and safe batteries based on lithium metal chemistry requires continuous efforts in various aspects, including electrode design, electrolyte engineering, development of advanced characterization/diagnosis technologies, full−battery engineering, and possible sensor design for safe battery operation, etc. Ultimately, the combinations of various approaches might be required to make lithium metal anode a viable technology.

Author : Lei Yang
Publisher : OAE Publishing Inc.
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4./5 ( download)

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Download or read book Recent progress on metal-organic framework derived carbon and their composites as anode materials for potassium-ion batteries written by Lei Yang and published by OAE Publishing Inc.. This book was released on 2023-10-08 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Potassium-ion batteries (PIBs) are considered as promising alternatives to lithium-ion batteries (LIBs) due to their abundant potassium resources, cost-effectiveness, and comparable electrochemical performance to LIBs. However, the practical application of PIBs is hindered by the slow dynamics and large volume expansion of anode materials. Owing to their unique morphology, rich pores, abundant active sites, and tunable composition, metal-organic framework (MOF)-derived carbon and its composites have been widely studied and developed as PIB anodes. In this review, the basic configuration, performance evaluation indicators, and energy storage mechanisms of PIBs were first introduced, followed by a comprehensive summary of the research progress in MOF-derived carbon and its composites, especially the design strategies and different types of composites. Moreover, the advances of in situ characterization techniques to understand the electrochemical mechanism during potassiation/depotassiation were also highlighted, which is crucial for the directional optimization of the electrochemical performance of PIBs. Finally, the challenges and development prospects of MOF-derived carbon and its composites for PIBs are prospected. It is envisioned that this review will guide and inspire more research efforts toward advanced MOF-derived PIB anode materials in the future.

Author : Dingchang Lin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.07/5 ( download)

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Download or read book High-energy Batteries Based on Lithium Metal Chemistry written by Dingchang Lin and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium batteries have profoundly impacted our daily life, with extensive applications in portable electronics, electrical automotive and grid−scale energy storage applications. In order to achieve much higher energy density than the state−of−the−art, chemistries beyond Li−ion are currently being investigated and need to be made viable for commercial applications. Using metallic Li is among the most prominent choices for next−generation Li batteries, such as Li−S and Li−air systems. After falling into oblivion for several decades because of safety concerns, metallic Li is now ready for a revival. In this talk, I will present my fundamental studies on the failure mechanisms of Li metal, as well as the rational material designs to tackle the problems. In the first chapter, the backgrounds regarding lithium battery research will be introduced. More specifically, the basic principles and the current stages of lithium battery, the future direction of its development, the chemistries at the battery electrode interfaces, and the failure mechanisms will be thoroughly discussed. These aspects lay the foundation for the research presented in this dissertation. In the second chapter, I will present the new findings and fundamental understandings on Li metal failure mechanisms. In the studies, infinite relative volume change of the conventional lithium metal electrode was first identified to be a key contributor to its failure. Then, the failure was further studied from the corrosion points of view, where a new corrosion pathway was identified as the dominant origin of the corrosion in the long term. In addition, typical Kirkendall voids were observed in the corroded Li. The findings were further rationalized by detailed analysis of solid electrolyte interphase formed on the surfaces. In the third part, I presented our efforts in stabilizing Li metal anode by Adv. Mater. development. Based on the new understandings presented in Chapter 2, the stable "host" design for Li metal was proposed and demonstrated. Interfacial modification technology was also developed to further stabilize the electrode/electrolyte interfaces. The two methodologies were proven to be very powerful in stabilizing Li metal. In the next part, battery safety issue was tackled by materials design in advanced battery separators and solid−state electrolytes, both of which were prominent for future batteries employing high energy battery chemistries. On one hand, strong separators with Li dendrite sensing function was developed. On the other hand, solid−state electrolytes with highly improved ionic conductivity and modulus were demonstrated. In the final part of the dissertation, I will present my perspectives and outlooks for the future research in this field. To commercialize the high−energy and safe batteries based on Li metal chemistry requires continuous efforts in various aspects, including electrode design, electrolyte engineering, development of advanced characterization/diagnosis technologies, full−battery engineering, and possible sensor design for safe battery operation, etc. Ultimately, the combinations of various approaches might be required to make Li metal anode a viable technology.

Author : Thomas Andrew Wynn
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.24/5 ( download)

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Download or read book Advanced Characterization and Modeling of Next Generation Lithium Ion Electrodes and Interfaces written by Thomas Andrew Wynn and published by . This book was released on 2020 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium ion batteries have proven to be a paradigm shifting technology, enabling high energy density storage to power the handheld device and electric automotive revolutions. However relatively slow progress toward increased energy and power density has been made since the inception of the first functional lithium ion battery. Materials under consideration for next generation lithium ion batteries include anionic-redox-active cathodes, solid state electrolytes, and lithium metal anodes. Li-rich cathodes harness anionic redox, showing increased first charge capacity well beyond the redox capacity of traditional transition metal oxides, though suffer from severe capacity and voltage fade after the first cycle. This is in part attributed to oxygen evolution, driving surface reconstruction. Solid-state electrolytes (SSEs) offer the potential for safer devices, serving as physical barriers for dendrite penetration, while hoping to enable the lithium metal anode. The lithium metal naturally exhibits the highest volumetric energy density of all anode materials. Here, we employ simulation and advanced characterization methodologies to understand the fundamental properties of a variety of next generation lithium ion battery materials and devices leading to their successes or failures. Using density functional theory, the effect of cationic substitution on the propensity for oxygen evolution was explored. Improvement in Li-rich cathode performance is predicted and demonstrated through doping of 4d transition metal Mo. Next, lithium phosphorus oxynitride (LiPON), an SSE utilized in thin film batteries, was explored. LiPON has proven stable cycling against lithium metal anodes, though its stability is poorly understood. RF sputtered thin films of LiPON are examined via spectroscopic computational methods and nuclear magnetic resonance to reveal its atomic structure, ultimately responsible for its success as a thin film solid electrolyte. A new perspective on LiPON is presented, emphasizing its glassy nature and lack of long-range connectivity. Progress toward in situ methodologies for solid-state interfaces is described, and a protocol for FIB-produced nanobatteries is developed. Cryogenic methodologies are applied to a PEO/NCA composite electrode. Cryogenic focused ion beam was shown to preserve polymer structure and morphology, enabling accurate morphological quantification and preserving the crystallinity, as observed via TEM. Last, development of in situ solid-state interface characterization is discussed.

Author : Rachid Yazami
Publisher : CRC Press
ISBN 13 : 9814364231
Total Pages : 452 pages
Book Rating : 4.32/5 ( download)

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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 452 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 de

Author : Jungwoo Lee
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.42/5 ( download)

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Download or read book Advancing Focused Ion Beam Characterization for Next Generation Lithium-Ion Batteries written by Jungwoo Lee and published by . This book was released on 2018 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Next generation lithium-ion batteries will take on a wide variety of roles to meet the increased requirements from growth in consumer electronics, electric vehicles, and utility storage for integrating intermittent renewable (solar and wind) power sources. The cost per watt-hour of commercial batteries have shown incremental improvement due to improved manufacturing design, though drastic increases in energy and power density are needed to satisfy projected demand. Solid-state electrolytes (SSE) are explored due to their potential to improve energy and power density through enabling alkali metal anodes, while mitigating safety and temperature stability concerns associated with conventional liquid electrolyte lithium-ion batteries. However, there are still significant scientific and engineering hurdles before the full potential of SSEs can be realized: primarily performance degradation from chemical and mechanical interfacial instability. We enable the use of solid-state thin film battery materials and devices as a model system for fundamental studies of bulk and interface properties because of their well-defined geometry and controlled chemical composition, eliminating any effects from polymeric binder or conductive agents. In this thesis, we explore the structural, mechanical, and electrochemical properties of thin film electrolytes amorphous lithium lanthanum titanate (a-LLTO) and lithium phosphorous oxynitride (LiPON) along with the fabrication of thin film batteries with various electrode chemistries. Using these devices we develop focused ion beam (FIB) as a technique to fabricate electrochemically active nanobatteries that enables in situ analysis in a FIB or transmission electron microscope (TEM) to couple local structural, morphological, and chemical phenomena. Further, one key advantage of SSEs is the potential to use a lithium metal anode. However, characterization of Li and Li/electrolyte interfaces is limited due to its intrinsic high chemical reactivity, low thermal stability, and low atomic number, making it prone to contamination and melting. Therefore, we demonstrate the ability of cryogenic focused ion beam (cryo-FIB) to process and characterize electrochemically deposited Li and Li metal based solid-state thin film devices.

Author : Panpan Dong
Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.14/5 ( download)

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Download or read book Rational Design of Composite Cathodes and Functional Electrolytes for High-Energy Lithium-Metal Batteries written by Panpan Dong and published by . This book was released on 2020 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallic lithium has been considered one of the most attractive anode materials for high-energy batteries because it has a low density (0.53 g cm8́23), the lowest reduction potential (8́23.04 V vs. the standard hydrogen electrode), and a high theoretical specific capacity (3,860 mAh g8́21). Chalcogen elements, such as sulfur and selenium, have been widely reported as promising cathode candidates for next-generation lithium-metal batteries (LMBs) that demonstrate much higher energy density than current lithium-ion batteries. However, lithium0́3chalcogen batteries still suffer from the loss of cathode active materials and the degradation of lithium metal anode owing to the shuttle effects of intermediate products (e.g., polysulfides and polyselenides), leading to fast capacity fading and poor cyclability. Moreover, for lithium metal anodes, the cracking of solid electrolyte interphase (SEI) layer during long cycling results in dead lithium formation and lithium dendrite growth, leading to poor Coulombic efficiency and potential safety issues. The abovementioned challenges hinder the commercialization of LMBs. To address these problems, various strategies have been developed to mitigate the dissolution/diffusion of redox intermediates and stabilize metallic lithium anodes. In this dissertation, sulfur- and selenium-based nanocomposites were synthesized and employed as advanced cathode materials for high-energy LMBs. The correlations between syntheses, properties, and performances of such chalcogen cathode materials were established by various characterization methods such as microstructural analyses, solid-state nuclear magnetic resonance, X-ray photoelectron spectroscopy, and nanoscale X-ray computed tomography. Additionally, the interfacial electrochemistry of lithium metal anodes and ionic liquid0́3based electrolytes is comprehensively investigated, revealing the effective stabilization and protection of lithium anode via the formation of an in situ SEI layer with specific compositions. Moreover, strategies for achieving novel solid polymer electrolytes with improved lithium-ion transference number were demonstrated, paving the way toward safe LMBs by mitigating lithium dendrite growth. This dissertation provides a combined strategy of advanced cathode design, electrolyte engineering, and lithium anode stabilization to develop high-energy LMBs for practical applications.

Author : Xing Xing
Publisher :
ISBN 13 :
Total Pages : 130 pages
Book Rating : 4.71/5 ( download)

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Download or read book Novel Materials for Next Generation Lithium Batteries written by Xing Xing and published by . This book was released on 2020 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium-ion batteries are one of the most promising energy storage devices for their light weight and superior cycling stability. However, the state-of-the-art lithium-ion batteries cannot satisfy the ever-increasing market demand of high energy density electrochemical energy devices. Advanced lithium batteries based on novel electrode materials could provide higher energy density thus become a hot research topic.This dissertation will discuss the designs and applications of novel electrode materials to address the performance challenges for different types of energy storage devices. Chapter 2 provides a new strategy to fabricate a "lithium-free" all-solid-state battery. The 3D hybrid anode design improves the cycling stability of all-solid-state batteries by overcoming the commonly observed cell failure due to the electrode volume change and lithium dendrite growth. This design provides a promising approach towards a high energy density, long life, and low-cost all-solid-state battery technology. In Chapter 3, a concentrated ether--based electrolyte with LiTFSI and LiNO3 as cosalts is proposed, which enables stable cycling of a Li-SPAN battery. In addition to providing excellent protection for lithium metal anodes by forming the solid electrolyte interface (SEI), the electrolyte promotes the formation of a crystalline cathode electrolyte interface (CEI) on the SPAN surface composed of LiF and LiNO2. The CEI effectively prevents the formation of soluble polysulfide species and enables stable cycling of the Li-SPAN batteries. In Chapter 4, a V2O5-Si multi-layer composite anode is proposed and fabricated. The mixed conductive V2O5 layer effectively confines the volume change of Si layer and prevents the parasitic reactions between Si and electrolyte. This strategy enables the anode a long cycle life as well as a long calendar life while maintaining high energy density.