Lithium Ion Batteries Solid Electrolyte Interphase

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Lithium Ion Batteries Solid Electrolyte Interphase

Lithium Ion Batteries Solid Electrolyte Interphase written by Perla B Balbuena and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-05-07 with Science categories.

This invaluable book focuses on the mechanisms of formation of a solid-electrolyte interphase (SEI) on the electrode surfaces of lithium-ion batteries. The SEI film is due to electrochemical reduction of species present in the electrolyte. It is widely recognized that the presence of the film plays an essential role in the battery performance, and its very nature can determine an extended (or shorter) life for the battery. In spite of the numerous related research efforts, details on the stability of the SEI composition and its influence on the battery capacity are still controversial. This book carefully analyzes and discusses the most recent findings and advances on this topic./a

Electrolyte And Solid Electrolyte Interphase Layer In Lithium Ion Batteries

Electrolyte And Solid Electrolyte Interphase Layer In Lithium Ion Batteries written by Alexandre Chagnes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Technology categories.

Electrolyte and Solid-Electrolyte Interphase Layer in Lithium-Ion Batteries.

Understanding The Solid Electrolyte Interphase Formed On Si Anodes In Lithium Ion Batteries

Understanding The Solid Electrolyte Interphase Formed On Si Anodes In Lithium Ion Batteries written by Yanting Jin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.

Correlating Long Term Lithium Ion Battery Performance With Solid Electrolyte Interphase Sei Layer Properties

Correlating Long Term Lithium Ion Battery Performance With Solid Electrolyte Interphase Sei Layer Properties written by Seong Jin An and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Electrolytes categories.

This study was conducted to understand effects of some of key factors (i.e., anode surface properties, formation cycling conditions, and electrolyte conditions) on solid electrolyte interphase (SEI) formation in lithium ion batteries (LIBs) and the battery cycle life. The SEI layer passivates electrode surfaces and prevents electron transfer and electrolyte diffusion through it while allowing lithium ion diffusion, which is essential for stable reversible capacities. It also influences initial capacity loss, self-discharge, cycle life, rate capability and safety. Thus, SEI layer formation and electrochemical stability are primary topics in LIB development. This research involves experiments and discussions on key factors (graphite surface properties, electrolyte volume, and formation cycle) affecting SEI formation. For the graphite anode surface property study, ultraviolet (UV) light was applied to battery electrodes for the first time to improve the SEI and cycle life. UV treatment for 40 minutes resulted in the highest capacity retention and the lowest resistance after the cycle life testing. Anode analysis showed changes in surface chemistry and wetting after the UV treatment. It also showed increases in solvent products and decreases in salt products on the SEI surface when UV-treated anodes were used. XPS analysis showed that UV light decomposed polyvinylidene fluoride (binder) but helped to increase the oxygen level on graphite, which, resulted in a thin SEI layer, low resistance, and eventually high capacity retention. For the formation cycling condition study, a fast SEI formation protocol was proposed. The protocol involved more (shallow) charge-discharge cycles between 3.9 V and 4.2 V and fewer (full depth of discharge) cycles below 3.9 V. It improved SEI and capacity retention and shortened formation time by 6 times or more without compromising cell performance. To understand effects of electrolyte conditions, electrolyte volumes were controlled in full cells. A minimum electrolyte volume factor of 1.9 or 3 times the total pore volume of cell components (cathode, anode, and separator) was needed for long-term cyclability and low impedance of cells consisting of graphite anode or 15 weight percent Si-graphite anode, respectively. Less electrolyte resulted in an increase of the measured Ohmic resistances.

Electron Transport Through The Solid Electrolyte Interphase In Lithium Ion Batteries

Electron Transport Through The Solid Electrolyte Interphase In Lithium Ion Batteries written by 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.

Improving The Solid Electrolyte Interphase Of Silicon Based Anodes For Lithium Ion Batteries

Improving The Solid Electrolyte Interphase Of Silicon Based Anodes For Lithium Ion Batteries written by Philipp Stehle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024* with categories.

Electrochemical Mechanical Model For The Solid Electrolyte Interphase Evolution In Lithium Ion Batteries With Uncertainty Quantification

Electrochemical Mechanical Model For The Solid Electrolyte Interphase Evolution In Lithium Ion Batteries With Uncertainty Quantification written by Nan Lin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Electrochemistry categories.

Atomistic Simulation Of The Early Stages Of Solid Electrolyte Interphase Formation In Lithium Ion Batteries

Atomistic Simulation Of The Early Stages Of Solid Electrolyte Interphase Formation In Lithium Ion Batteries written by Mathew J. Boyer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.

Lithium ion batteries have fueled a technological revolution in consumer electronics, power tools, and electric vehicles. Further advancements of this technology to improve charge times and capacity while maintaining safe operability, however, require a deeper fundamental understanding of electrode and electrolyte materials as well as their interfaces. In particular, interfacial stability between the high energy anode and the electrolyte represents one of the greatest hurdles to improving current-generation batteries as well as moving onto next-generation technologies like lithium metal or silicon. Despite the commercial availability of lithium ion batteries for more than a decade, there is no intrinsically stable electrolyte which is able to satisfy the design requirements of a commercial device. Instead, a protective layer formed during the first charge cycle known as the solid electrolyte interphase (SEI) is relied upon to ensure stable operation over subsequent charge/discharge cycles. Despite being critical to battery operability, the SEI and the process by which it forms remains poorly understood. As the SEI is only several to tens of nm thick and decomposes in ambient conditions, its study through experiments presents many challenges. However, computational tools can easily access the size- and time-scales required to elucidate the processes which govern the formation of the SEI. This dissertation presents a computational framework by which reductive decomposition of the electrolyte during the early stages of SEI formation may be studied through atomistic simulations including classical molecular dynamics and density functional theory. Additionally, fundamental descriptions of several reaction and diffusion processes involved in the formation of the SEI from a conventional electrolyte on a graphite electrode are presented. This methodology may be later applied to more complex electrolytes or other electrodes like silicon, but also lays the groundwork for exploring later stages of the SEI formation and growth

Understanding Growth And Performance Drawbacks Of The Solid Electrolyte Interphase In Lithium Ion Batteries

Understanding Growth And Performance Drawbacks Of The Solid Electrolyte Interphase In Lithium Ion Batteries written by Lukas Köbbing and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025 with categories.

The Role Of Surface Reactions And Solid Electrolyte Interphase In Silicon Electrodes For Lithium Ion Batteries

The Role Of Surface Reactions And Solid Electrolyte Interphase In Silicon Electrodes For Lithium Ion Batteries written by Kjell William Schroder and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.

In order to utilize renewable energy sources to avoid adverse climate change caused by fossil fuel use, economical, efficient, and long-cycling energy storage means are needed for grid power applications and electric vehicles. Lithium-ion batteries (LIBs) are promising electrochemical energy storage devices for these applications, but capacity, cycle life, and device energy density need to be improved to meet these challenges. Silicon, as a lithium alloy, promises high gravimetric and volumetric charge capacities as a negative electrode in the next generation of LIBs. However silicon has a lithiation potential outside the window of stability of common non-aqueous liquid electrolytes (e.g., lithium hexafluorophosphate in ethylene carbonate and diethyl carbonate mixtures). Consequently, parasitic side reactions occur during continued lithiation and delithiation (cycling) of silicon. However, these side reactions (including electro-reduction and thermal decomposition) form insoluble products that make a solid electrolyte interphase (SEI), passivating an electrode’s surface. Cycling silicon electrodes can entail incomplete passivation (via unstable SEI species) and newly exposed surfaces (due to mechanical wear) and thus continued side reactions that lead to thermal runaway, capacity loss, and cell failure. By understanding interfacial electrode chemistry, it is hoped that novel design suggestions for addressing these problems will be uncovered. Model silicon electrodes studied by X-ray Photoelectron Spectroscopy (XPS), and Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS) were used to explore the effects of surface layer conductivity and electrolyte additives on SEI composition and structure. Anhydrous and anoxic techniques showed better reproducibility and accuracy in characterizing the SEI over previous studies of composite electrodes exposed to ambient conditions. By comparing silicon oxide and etched silicon surfaces, electrode conductivity was studied as well as how the co-solvent additive fluoroethylene carbonate (FEC) affects the SEI. Both the etched silicon surface and FEC produced SEI species like lithium fluoride that improved stability by resisting further electro-reduction. However, questions about the oxidative stability of some SEI species were raised (namely lithium oxide), suggesting a more stable artificial SEI could be manufactured compared to those formed during naive device operation.