Electrochemical Approaches To Interfacial Phenomena In Sodium And Lithium Ion Batteries
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Electrochemical Approaches To Interfacial Phenomena In Sodium And Lithium Ion Batteries
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Author : Sophia E. Lee
language : en
Publisher:
Release Date : 2021
Electrochemical Approaches To Interfacial Phenomena In Sodium And Lithium Ion Batteries written by Sophia E. Lee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Batteries (Ordnance) categories.
Raising demand for high-density, long-duration energy storage is driving the development of new beyond-lithium-ion battery chemistries, including sodium-ion batteries which offer an affordable and earth-abundant alternative. The performance and lifetime of many non-aqueous battery chemistries depend on the efficient formation of the solid electrolyte interphase (SEI). During the first charge cycles, the electrolyte is reduced at the anode surface and insoluble degradation products form a passivating layer, allowing ion transport while preventing additional electrolyte degradation. Key differences between the properties of sodium and lithium, including increased solubility of degradation products, affect the efficiency of SEI formation. As a result, sodium-ion batteries are subject to lower columbic efficiency, faster capacity fade, and higher resistance growth than lithium-ion. Soluble degradation products can also diffuse to the cathode, a form of cross-talk with additional implications on battery lifetime. Better understanding of the formation and dissolution of soluble degradation products, including methods to measure the relative concentration of dissolved electrolyte products, is necessary to overcome these limitations. Here we use electrochemistry to study the characteristics of the SEI and its implications on battery performance and design. In the first part, we examine the impact of system design on experimental results. First, we demonstrate how cross-talk of soluble products can impact the study of working electrode behavior in sodium-ion systems. We then investigate candidate reference electrodes to minimize the effects of cross-talk and voltage drift in the system. Additionally, we provide a benchmark of the compatibility between non-aqueous solvents and materials of construction for designing custom spectroscopic and electrochemical reactors. In the second part, we develop a new electrochemical approach to soluble product analysis. While differences in solubility have been studied through ex-situ spectroscopic techniques, in-situ detection of soluble degradation products can allow increased understanding of SEI dynamics and enable real-time evaluation of the efficiency of SEI formation. Here, we fabricate novel interdigitated electrode arrays( IDAs) with a high aspect ratio of Wgen¬ to Wcol (10-40:1) using photolithographic techniques. Using geometry to bias diffusion we achieve low feedback while maintaining relatively high collection efficiency (25-40%). Through this work, we demonstrate electrochemical monitoring of soluble products in several SEI formation and product detection schemes. Utilizing this technique, it is possible to observe the proportion of electroactive soluble degradation products formed as a function of potential and evaluate electrolyte formulations. Finally, we turn our attention to parallels between the SEI and solid-state electrolytes to understand the role of interfacial potential on the nature of ionic conduction and electronic insolation.
Transition Metal Oxides For Electrochemical Energy Storage
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Author : Jagjit Nanda
language : en
Publisher: John Wiley & Sons
Release Date : 2022-03-28
Transition Metal Oxides For Electrochemical Energy Storage written by Jagjit Nanda and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-03-28 with Technology & Engineering categories.
Transition Metal Oxides for Electrochemical Energy Storage Explore this authoritative handbook on transition metal oxides for energy storage Metal oxides have become one of the most important classes of materials in energy storage and conversion. They continue to have tremendous potential for research into new materials and devices in a wide variety of fields. Transition Metal Oxides for Electrochemical Energy Storage delivers an insightful, concise, and focused exploration of the science and applications of metal oxides in intercalation-based batteries, solid electrolytes for ionic conduction, pseudocapacitive charge storage, transport and 3D architectures and interfacial phenomena and defects. The book serves as a one-stop reference for materials researchers seeking foundational and applied knowledge of the titled material classes. Transition Metal Oxides offers readers in-depth information covering electrochemistry, morphology, and both in situ and in operando characterization. It also provides novel approaches to transition metal oxide-enabled energy storage, like interface engineering and three-dimensional nanoarchitectures. Readers will also benefit from the inclusion of: A thorough introduction to the landscape and solid-state chemistry of transition metal oxides for energy storage An exploration of electrochemical energy storage mechanisms in transition metal oxides, including intercalation, pseudocapacitance, and conversion Practical discussions of the electrochemistry of transition metal oxides, including oxide/electrolyte interfaces and energy storage in aqueous electrolytes An examination of the characterization of transition metal oxides for energy storage Perfect for materials scientists, electrochemists, inorganic chemists, and applied physicists, Transition Metal Oxides for Electrochemical Energy Storage will also earn a place in the libraries of engineers in power technology and professions working in the electrotechnical industry seeking a one-stop reference on transition metal oxides for energy storage.
Interfacial Phenomena Observed In Electrochemical Systems Li Ion Batteries Fuel Cells Dye Sensitized Solar Cells Causes Relevance And Enhancements
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Author : Shabab Amiruddin
language : en
Publisher:
Release Date : 2008
Interfacial Phenomena Observed In Electrochemical Systems Li Ion Batteries Fuel Cells Dye Sensitized Solar Cells Causes Relevance And Enhancements written by Shabab Amiruddin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Interfaces Phenomena And Nanostructures In Lithium Batteries
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Author : Albert R. Landgrebe
language : en
Publisher: The Electrochemical Society
Release Date : 2001
Interfaces Phenomena And Nanostructures In Lithium Batteries written by Albert R. Landgrebe and has been published by The Electrochemical Society this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Science categories.
In Situ Analytical Characterization Of Interfacial Phenomena In All Solid State Lithium Ion Thin Film Batteries
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Author : Ziying Wang
language : en
Publisher:
Release Date : 2016
In Situ Analytical Characterization Of Interfacial Phenomena In All Solid State Lithium Ion Thin Film Batteries written by Ziying Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Lithium ion batteries have become one of the most important rechargeable energy storage devices used in our modern society today. As the demand for such devices shift from portable electronics to electric vehicles and large scale storage in order to utilize energy sustainably, ever increasing energy densities both in terms of weight and volume are needed. To satisfy this demand, lithium ion batteries utilizing solid state electrolytes show promise of a new paradigm shift in energy storage technologies. The introduction of solid state electrolyte could, in principle, yield many advantages over conventional lithium ion batteries. Foremost, lithium metal can be used as the anode along with a high voltage cathode to boost energy density. Secondly, removal of flammable liquid electrolyte greatly improves the inherent safety of the battery. We focused on using Focused Ion Beam (FIB) nano-fabrication technique to prepare Transmission Electron Microscopy (TEM) samples of all-solid-state batteries produced through physical vapor deposition techniques. The particular full cell chemistry of lithium cobalt oxide (LiCoO2) as cathode, amorphous silicon (a-Si) as anode, and lithium phosphorus oxynitrdie (LiPON) as electrolyte was used for investigations. Through analysis of TEM images and electron energy loss spectroscopy (EELS), important interfacial phenomena were observed at the anode-electrolyte interface and the cathode-electrolyte interface. Overcharging of the anode resulted in accumulation of lithium at the anode-current collector interface and interdiffusion of phosphorus and silicon atoms at the anode-electrolyte interface. Furthermore, we developed a unique methodology using FIB fabrication techniques to prepare electrochemically active TEM samples of all-solid-state nanobatteries that can be galvanostatically charged in the FIB or TEM. This new methodology enabled in situ TEM observations of a previously undiscovered interfacial layer between the LiCoO2 cathode and LiPON electrolyte. This interfacial layer is composed of a highly disordered rocksalt like cobalt oxide phase that is oxidized and forms lithium oxide species during in situ charge. Additionally, electrochemically cycling at elevated temperatures (80 °C) causes further decomposition of the cathode layer decreasing the overall capacity and increasing interfacial impedance of the cell. These results indicate that proper engineering of electrode-electrolyte interface is essential for the performance of all-solid-state batteries.
Interfacial Phenomena In Battery Systems
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Author :
language : en
Publisher:
Release Date : 2014
Interfacial Phenomena In Battery Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Hard X Ray Photoelectron Spectroscopy Haxpes
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Author : Joseph Woicik
language : en
Publisher: Springer
Release Date : 2015-12-26
Hard X Ray Photoelectron Spectroscopy Haxpes written by Joseph Woicik and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-26 with Science categories.
This book provides the first complete and up-to-date summary of the state of the art in HAXPES and motivates readers to harness its powerful capabilities in their own research. The chapters are written by experts. They include historical work, modern instrumentation, theory and applications. This book spans from physics to chemistry and materials science and engineering. In consideration of the rapid development of the technique, several chapters include highlights illustrating future opportunities as well.
Design Of Advanced Polymer Electrolyte For High Performance Lithium And Sodium Batteries
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Author : Wenfeng Liang
language : en
Publisher:
Release Date : 2020
Design Of Advanced Polymer Electrolyte For High Performance Lithium And Sodium Batteries written by Wenfeng Liang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Polyelectrolytes categories.
The energy density of lithium ion batteries (LIBs) is limited by the capacities of the electrode materials. Lithium metal is a promising anode material for future LIBs due to its high theoretical specific capacity (3,860 mAh/g) and low redox potential (-3.04 V vs. standard hydrogen electrode). However, lithium plating in liquid electrolyte will form Li dendritic structure and subsequently penetrate the porous polymeric separator, resulting in battery short circuiting. A straightforward method to suppress the growth of lithium dendrites is to replace the liquid phase electrolyte with a solid-state one. Among different solid-state electrolyte candidates, solid polymer electrolyte (SPE) is advantageous due to its flexible nature and low-cost raw material. However, SPE typically exhibits low ionic conductivity compared to its liquid electrolyte counterpart, which thus could result in restricted use in battery applications. In this work, a rational approach to achieve highly ionic conductive and electrochemically stable SPEs will be discussed. A phase-diagram was firstly mapped out to provide guidance in designing a composite electrolyte with high ionic conductivity at room temperature. The thermal and electrochemical stability of SPE were then characterized. A dual-salt base electrolyte with lithium bis(oxalate)borate (LiBOB) and bis(trifluoromethanesulphonyl)imide (LiTFSI) exhibited excellent electrochemical stability from the passivation layer formed between the electrode/electrolyte interface. In addition, SPEs based on crosslinked fluoropolymer and poly(ethylene glycol) diacrylate (PEGDA) were investigated. Those properties of SPE enable the fabrication of solid-state batteries with lithium metal as an anode. Lithium plating/striping experiments and battery tests were conducted, and the results indicated that the dual-salt SPE could be a promising candidate electrolyte for next generation solid-state rechargeable battery. Sodium ion batteries display good performance yet with limited protection for the inevitable sodium dendrite growth if coupled with metallic sodium electrode, which is an adverse phenomenon that would eventually result in the deterioration of the battery. SPEs with superior ionic conductivity and outstanding electrochemical stability are promising for the all solid-state sodium batteries in grid-storage applications. In this study, a transparent free-standing SPE membrane comprising sodium perchlorate (NaClO4), PEGDA and plastic crystal molecules was fabricated. This sodium based SPE exhibits high sodium-ion conductive property (over 0.925 mS/cm at 30 oC) while being electrochemically stable. A rational approach has also been designed and achieved by using the phase diagram. The NaClO4-based SPE can not only exhibit excellent electrochemical stability with metallic sodium electrode, but also provide remarkable current rate and long-term cycling performance for the solid-state sodium metal batteries (SMB).
Enhancing Electrochemical Performance Of Electrode Materials For Li Ion Batteries And Na Ion Batteries Via Thermodynamic Surface Interface Contro
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Author : Jiajia Huang
language : en
Publisher:
Release Date : 2017
Enhancing Electrochemical Performance Of Electrode Materials For Li Ion Batteries And Na Ion Batteries Via Thermodynamic Surface Interface Contro written by Jiajia Huang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
A facile and low-cost route based on thermodynamic principles of surface amorphous films (SAFs), intergrainular films (IGFs), and cation surface segregation benefits electrochemical performances of electrode materials for lithium-ion batteries and sodium-ion batteries. SAFs as a facile and generic surface modification method is utilized to significantly improve the rate performance and cycling stability of cathode materials for lithium-ion batteries. A thermodynamic framework of SAFs is proposed. These nanoscale SAFs form spontaneously and uniformly upon mixing and annealing at a thermodynamic equilibrium, and they exhibit a self-regulating or "equilibrium" thickness due to a balance of attractive and repulsive interfacial interactions acting on the films. Specially, spontaneous formation of nanoscale Li3PO4-based SAFs has been demonstrated in two proof-of-concept systems LiCoO2 and LiNi0.5Mn1.5O4. Furthermore, SAFs introduced by nitridation can also benefit the performance of TiO2 anode material for sodium-ion batteries. The amorphous intergrainular films (IGFs) are found in the system of Sn doped Si anode for lithium-ion batteries. The coexistence of IGFs and porous secondary structure (characterized by FIB/SEM on the cross section) results in an enhanced performance. SAFs and IGFs can be used to guide future experiments of other material systems. Utilizing anisotropic surface segregation to thermodynamically control the particle morphology and the surface composition is another economic, facile, and effective method to significantly improve the electrochemical performance of battery electrodes. WO3 doping and anisotropic surface segregation can change the facet relative surface energy to tailor the particle Wulff shape of LiMn1.5Ni0.5O4 spinel materials and the surface Mn/Ni ratio and benefits performances. The WO3 surface segregation can also improve Co-free Li-rich layered oxide Li1.13Ni0.3Mn0.57O2 cathode material performance. X-ray photoelectron spectroscopy in conjunction with ion sputtering has shown that W segregates to the particle surfaces and decreases the surface Ni/Mn atomic ratio; high-resolution transmission electron microscopy has further suggested that the segregation of W increases the structural disorder at the particle surfaces, which may also benefit the rate performance.
Strategies To Improve The Electrochemical Performance Of Lithium Ion Batteries By Stabilizing The Interface Of Electrode Electrolyte
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Author : Ye Jin
language : en
Publisher:
Release Date : 2020
Strategies To Improve The Electrochemical Performance Of Lithium Ion Batteries By Stabilizing The Interface Of Electrode Electrolyte written by Ye Jin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
"Lithium-ion batteries (LIBs) provide great potential for electric vehicles, and smart grids as future energy-storage devices. However, there are many challenges in the development of the LIB industry, including low energy and power density of electrode materials, poor rate performance, short cycle life of electrode materials, and safety issues caused by the flammability of the conventional organic liquid electrolytes. In this research, we were committed to using general approach to efficiently and economically synthesize or modify LIB materials by stabilizing the interface between electrode and electrolyte. Atomic layer deposition (ALD) method was used to coat metal oxide thin films on commercial electrode materials, which assisted the electrodes to form a beneficial interface layer and protected the active materials from organic liquid electrolyte, improved the conductivity of the active material, and led to an improved electrochemical performance of the material. The problem of uneven distribution of polyvinylidene fluoride (PVDF) binder had been solved using an extremely simple heat treatment method, which led to a stable and inorganic-riched solid electrolyte interphase (SEI) layer that improved the specific capacities and capacity retentions of the anode electrodes. A low liquid leakage ceramic polymer electrolyte (CPE) with high porosity, thermal and electrochemical stability, and ionic conductivity was synthesized to solve the safety issue of the uncontrolled growth of lithium dendrites in the conventional LIBs. Ultra-thin ZrO2 films were coated on cathode particles by ALD to reduce the interfacial resistance for all-solid-state battery, which improved lithium ions transport and suppressed undesirable interfacial side reactions"--Abstract, page