Download or read book Towards Impacting Electrochemical Phenomena Using Interfacial Engineering written by Sami Khan (Ph. D.) and published by . This book was released on 2020 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrochemical phenomena can be broadly defined as any process that involves transfer of electrons, concurrently with a measurable and quantifiable chemical change. Interfacial engineering, on the other hand, can be defined as the altering of surface chemistry and texture across various length scales to impact electro-chemo-mechanical interactions between two or more surfaces. In this thesis, the role of interfacial engineering in impacting two specific electrochemical phenomena has been studied: corrosion and electrochemical reduction of CO 2 In the first part of this thesis, lubricant-impregnated surfaces (LISs) consisting of thin films of lubricant held stably in micro-textures by means of capillary forces have been systematically designed and studied for reducing corrosion. Corrosion is a detrimental process that can impact the performance and lifetime of many infrastructural systems and structures. In this work, we fabricate microposts on silicon using photolithography, varying inter-post spacing systematically from 5 pm to 50 pm, and conformally sputter coat a thin layer of iron to study the corrosion phenomena electrochemically in an aqueous 3.5 wt% sodium chloride solution, and we show that the corrosion rate on LIS is drastically reduced by three orders of magnitude. Using electrochemical impedance spectroscopy, we develop model circuits for various LIS configurations and show that the measured resistances and capacitances agree with a theoretical model, and discuss in detail where deviations may occur. Similarly, we study the role of lubricant layers towards reducing hydrogen embrittlement. Using a Devanathan-Stachurski electrochemical permeation cell we show that under accelerated conditions, the effective diffusion coefficient of hydrogen on steel is reduced by an order of magnitude using LIS. Furthermore, we apply LIS to heal zirconia coatings on steel. Zirconia, that grows natively on zirconium alloys used as cladding for fuel in nuclear reactors, is known to serve as a hydrogen barrier but the presence of grain boundaries or macroscopic surface defects can provide pathways for hydrogen entry. We show that LIS improves the effective diffusion coefficient of a defective zirconia film on steel by an order of magnitude. Finally, we develop aerophilic surfaces to trap CO2 bubbles in close proximity to a CO2 electro-reduction catalyst. Electrochemical reduction of CO2 (CO2RR) to valuable fuels is a promising approach towards reducing the ever-growing atmospheric CO2 levels, and efficient delivery and replenishment of CO2 remains a fundamental challenge that can impact CO 2RR current density and product distribution. When CO2 bubbles are trapped near the catalyst in a plastron layer, the local co 2 concentration available to the catalyst is enhanced and maintained, thereby increasing the magnitude of current density associated with CO2 reduction by close to two times as compared to the conventional CO2 heads pace mode of delivery. We confirm the enhancement in local CO2 concentration using sensitive pH probes as well as colorimetric techniques. Furthermore, we find that hydrogen co-evolution is suppressed from 33% in the heads pace case to 13% with the plastron at -1.1 V vs RHE. We demonstrate that the increase in the CO2RR current density can be scaled up to an array of copper catalysts that possess a higher surface area, while maintaining current density and CO2 concentration close to the catalyst for over an hour. We also demonstrate that CO2RR performance can be enhanced on a porous, nano-structured catalyst using these plastron layers.
Download or read book Interfacial Phenomena written by Mustafa Akbulut and published by Elsevier. This book was released on 2016-09-01 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: An interface is defined as a surface that forms the boundary between two bodies, liquids, or chemical phases. Interfacial Phenomena is a topic that deals with an understanding of the physical and chemical properties of interfaces in natural and engineered systems and how such interfaces interact with each other and other entities. Interfacial phenomena is a critical element of a variety of chemical engineering research and processes such as chemical reactions and catalysis, colloids, drug delivery, emulsions and foams, energy conversion and storage, environmental protection and remediation, sensors, and separation and purification. The book seeks to provide a fundamental background on the sub-topics of interfacial phenomena that are relevant to the chemical and biological engineering research and processes. There is no textbook available on the market focusing on the fundamentals of interfacial phenomena primarily from a perspective of research in chemical and biological engineering. Interfacial phenomenon is a topic that has exponentially been evolving over the past two decades. To stay informed, updated, and abreast of current and emerging topics of interfacial phenomena; students, researchers, and academicians need a new book that specifically aims at having a critical balance among classical, contemporary, and emerging topics in interfacial phenomena. For the laymen (non scientist-Why should he/she buy this book?) Interfacial phenomena play an essential role in various contemporary and emerging industrial technologies for energy conversion and storage, heath care, and environmental protection and remediation. Fundamentals of Interfacial Phenomena provides an intuitive explanation of the concepts in interfacial phenomena with the aid of easy-to-follow illustrations and real-life worked examples. Accessible and easy to read throughout, the book offers a robust foundation on the physicochemical properties of interfaces and how these interfaces interact with each other and other entities. For the user (scientist/expert-why should he/she buy the book?) Fundamentals of Interfacial Phenomena provides a physicochemical background to interfacial phenomena with a specific goal of acquainting the reader with relevant concepts, laws and issues that are significant in the context of academic and industrial research in chemical and biological engineering. Due to its comprehensive presentation, the book can also be easily tailored to advance undergraduate and graduate courses in a variety of other disciplines. The book includes the latest in-depth and high-impact research regarding interfacial phenomena from around the world. Some of the topics covered in the text include thermodynamics of interfaces; intermolecular and interparticle interactions; surface forces; electrostatic and electrokinetic phenomena at interfaces; contact angle phenomena and wetting; liquid surfaces; adsorption and desorption; surface modification; self- and directed- assembly; emulsions, micelles, and foams; thin films; biological interfaces; and interfacial mass transfer.
Download or read book Fundamentals of Interfacial Engineering written by Robert J. Stokes and published by Wiley-VCH. This book was released on 1997 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Interfacial Engineering defines the newly emerging, cross-disciplinary field of interfacial engineering. It gives students a coherent, integrated approach to the field, while offering engineering instructors an excellent starting point for curriculum development. The text emphasizes the fundamental concepts underlying interfacial phenomena and how these concepts are reduced to practice in processing and manufacturing settings. Fundamentals of Interfacial Engineering is a useful introductory overview of senior-level undergraduate and first-year graduate students in chemical engineering, materials science, polymer science, and electronics engineering, as well as for industrial and government researchers seeking knowledge of interfacial phenomena across disciplinary lines.
Download or read book Bioelectrochemical Interface Engineering written by R. Navanietha Krishnaraj and published by John Wiley & Sons. This book was released on 2019-09-24 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the fundamental concepts and rules in bioelectrochemistry and explores latest advancements in the field Bioelectrochemical Interface Engineering offers a guide to this burgeoning interdisciplinary field. The authors—noted experts on the topic—present a detailed explanation of the field’s basic concepts, provide a fundamental understanding of the principle of electrocatalysis, electrochemical activity of the electroactive microorganisms, and mechanisms of electron transfer at electrode-electrolyte interfaces. They also explore the design and development of bioelectrochemical systems. The authors review recent advances in the field including: the development of new bioelectrochemical configurations, new electrode materials, electrode functionalization strategies, and extremophilic electroactive microorganisms. These current developments hold the promise of powering the systems in remote locations such as deep sea and extra-terrestrial space as well as powering implantable energy devices and controlled drug delivery. This important book: • Explores the fundamental concepts and rules in bioelectrochemistry and details the latest advancements • Presents principles of electrocatalysis, electroactive microorganisms, types and mechanisms of electron transfer at electrode-electrolyte interfaces, electron transfer kinetics in bioelectrocatalysis, and more • Covers microbial electrochemical systems and discusses bioelectrosynthesis and biosensors, and bioelectrochemical wastewater treatment • Reviews microbial biosensor, microfluidic and lab-on-chip devices, flexible electronics, and paper and stretchable electrodes Written for researchers, technicians, and students in chemistry, biology, energy and environmental science, Bioelectrochemical Interface Engineering provides a strong foundation to this advanced field by presenting the core concepts, basic principles, and newest advances.
Download or read book Interfacial Phenomena written by Mustafa Akbulut and published by Elsevier. This book was released on 2016-09-01 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: An interface is defined as a surface that forms the boundary between two bodies, liquids, or chemical phases. Interfacial Phenomena is a topic that deals with an understanding of the physical and chemical properties of interfaces in natural and engineered systems and how such interfaces interact with each other and other entities. Interfacial phenomena is a critical element of a variety of chemical engineering research and processes such as chemical reactions and catalysis, colloids, drug delivery, emulsions and foams, energy conversion and storage, environmental protection and remediation, sensors, and separation and purification. The book seeks to provide a fundamental background on the sub-topics of interfacial phenomena that are relevant to the chemical and biological engineering research and processes. There is no textbook available on the market focusing on the fundamentals of interfacial phenomena primarily from a perspective of research in chemical and biological engineering. Interfacial phenomenon is a topic that has exponentially been evolving over the past two decades. To stay informed, updated, and abreast of current and emerging topics of interfacial phenomena; students, researchers, and academicians need a new book that specifically aims at having a critical balance among classical, contemporary, and emerging topics in interfacial phenomena. For the laymen (non scientist-Why should he/she buy this book?) Interfacial phenomena play an essential role in various contemporary and emerging industrial technologies for energy conversion and storage, heath care, and environmental protection and remediation. Fundamentals of Interfacial Phenomena provides an intuitive explanation of the concepts in interfacial phenomena with the aid of easy-to-follow illustrations and real-life worked examples. Accessible and easy to read throughout, the book offers a robust foundation on the physicochemical properties of interfaces and how these interfaces interact with each other and other entities. For the user (scientist/expert-why should he/she buy the book?) Fundamentals of Interfacial Phenomena provides a physicochemical background to interfacial phenomena with a specific goal of acquainting the reader with relevant concepts, laws and issues that are significant in the context of academic and industrial research in chemical and biological engineering. Due to its comprehensive presentation, the book can also be easily tailored to advance undergraduate and graduate courses in a variety of other disciplines. The book includes the latest in-depth and high-impact research regarding interfacial phenomena from around the world. Some of the topics covered in the text include thermodynamics of interfaces; intermolecular and interparticle interactions; surface forces; electrostatic and electrokinetic phenomena at interfaces; contact angle phenomena and wetting; liquid surfaces; adsorption and desorption; surface modification; self- and directed- assembly; emulsions, micelles, and foams; thin films; biological interfaces; and interfacial mass transfer.
Download or read book Introduction to Electrical Interfacial Phenomena written by K. S. Birdi and published by CRC Press. This book was released on 2010-04-26 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the rapid development of nanotechnology, the surface-to-volume ratio of objects of interest continues to increase. As such, so does the importance of our ability to tailor interfacial properties. Written by bestselling author and internationally renowned researcher K.S. Birdi, Introduction to Electrical Interfacial Phenomena offers comprehensi
Download or read book Interfacial Phenomena written by J.T. Davies and published by Academic Press. This book was released on 2012-12-02 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interfacial Phenomena examines the fundamental properties of various liquid interfaces. This book discusses the physics of surfaces; electrostatic and electrokinetic phenomena; and adsorption at liquid interfaces. The properties of monolayers; reactions at liquid surfaces; diffusion through interfaces; and disperse systems and adhesion are also deliberated. Other topics include the vapor pressures over curved surfaces; electrical capacity of the double layer; applications of electrophoresis; and thermodynamics of adsorption and desorption. The experimental methods of spreading films at the oil-water interface; penetration into monolayers; experiments on dynamic systems; and spontaneous emulsification are likewise covered in this text. This book is beneficial to chemical engineers and students concerned with interfacial phenomena.
Download or read book Interfacial Electroviscoelasticity and Electrophoresis written by Jyh-Ping Hsu and published by CRC Press. This book was released on 2017-06-14 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the 20 years since the pilot plant experiments used to develop the concept of electroviscoelasticity, inroads have been made in the understanding of its many related processes. Interfacial Electroviscoelasticity and Electrophoresis meets a massive scientific challenge by presenting deeper research and developments in the basic and applied science and engineering of finely dispersed particles and related systems. Introducing more profound and in-depth treatises related to the liquid-liquid finely dispersed systems (i.e., emulsions and double emulsions), this book describes a new theory developed through the authors' work. These findings are likely to impact other research and applications in a wide array of other fields, considering that the modeling of liquid-liquid interfaces is key to numerous chemical manufacturing processes, including those used for emulsions, suspensions, nanopowders, foams, biocolloids, and plasmas. The authors cover phenomena at the micro, nano, and atto-scales, and their techniques, theory, and supporting data will be of particular interest to nanoscientists, especially with regard to the breaking of emulsions. This groundbreaking book: Takes an interdisciplinary approach to elucidate the momentum transfer and electron transfer phenomena Covers less classical chemical engineering insight and modern molecular and atomic engineering Reviews basic theory of electrokinetics, using the electrophoresis of rigid particles as an example Built around the central themes of hydrodynamic, electrodynamic, and thermodynamic instabilities that occur at interfaces, this book addresses recently developed concepts in the physics, chemistry, and rheological properties of those well-studied interfaces of rigid and deformable particles in homo- and hetero-aggregate dispersed systems. The book also introduces the key phenomenon of electrophoresis, since it is widely adopted either as an analytical tool to characterize the surface properties of colloid-sized particles or in the separation and purification process of both laboratory and industrial scales. The applications and implications of the material presented in the book represent a major contribution to the advanced fundamental, applied, and engineering research of interfacial and colloidal phenomena.
Download or read book Interfacial Electrochemistry written by Andrzej Wieckowski and published by CRC Press. This book was released on 1999-08-24 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text probes topics and reviews progress in interfacial electrochemistry. It supplies chapter abstracts to give readers a concise overview of individual subjects and there are more than 1500 drawings, photographs, micrographs, tables and equations. The 118 contributors are international scholars who present theory, experimentation and applications.
Download or read book Electrochemical Approaches to Interfacial Phenomena in Sodium and Lithium Ion Batteries written by Sophia E. Lee and published by . This book was released on 2021 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Interface Analysis and Engineering of Thin Functional Films on Metals written by Guido Grundmeier and published by Cuvillier Verlag. This book was released on 2006 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Reaction and Reactor Engineering written by James John Carberry and published by CRC Press. This book was released on 2020-08-26 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an authoritative progress report that will remain germane to the topic and prove to be a substantial inspiration to further progress. It is valuable to academic and industrial practitioners of the art and science of chemical reaction and reactor engineering.
Download or read book Interfacial Electrochemistry written by Wolfgang Schmickler and published by Springer Science & Business Media. This book was released on 2010-08-26 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrochemistry is an old branch of physical chemistry. Due to the development of surface sensitive techniques, and a technological interest in fuel cells and batteries, it has recently undergone a rapid development. This textbook treats the field from a modern, atomistic point of view while integrating the older, macroscopic concepts. The increasing role of theory is reflected in the presentation of the basic ideas in a way that should appeal to experimentalists and theorists alike. Special care is taken to make the subject comprehensible to scientists from neighboring disciplines, especially from surface science. The book is suitable for an advanced course at the master or Ph.D. level, but should also be useful for practicing electrochemists, as well as to any scientist who wants to understand modern electrochemistry.
Download or read book 1st World Congress on Electroporation and Pulsed Electric Fields in Biology Medicine and Food Environmental Technologies written by Tomaz Jarm and published by Springer. This book was released on 2015-08-31 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the proceedings of the 1st World Congress on Electroporation and Pulsed Electric Fields in Biology, Medicine and Food & Environmental Technologies (WC2015). The congress took place in Portorož, Slovenia, during the week of September 6th to 10th, 2015. The scientific part of the Congress covered different aspects of electroporation and related technologies and included the following main topics: · Application of pulsed electric fields technology in food: challenges and opportunities · Electrical impedance measurement for assessment of electroporation yield · Electrochemistry and electroporation · Electroporation meets electrostimulation · Electrotechnologies for food and biomass treatment · Food and biotechnology applications · In vitro electroporation - basic mechanisms · Interfacial behaviour of lipid-assemblies, membranes and cells in electric fields · Irreversible electroporation in clinical use · Medical applications: electrochemotherapy · Medical applications: gene therapy · Non-electric field-based physical methods inducing cell poration and enhanced molecule transfer · Non-thermal plasmas for food safety, environmental applications and medical treatments · PEF for the food industry: fundamentals and applications · PEF proce ss integration - complex process chains and process combinations in the food industry · Predictable animal models · Pulsed electric fields and electroporation technologies in bioeconomy · Veterinary medical applications
Download or read book Microreaction Technology written by M. Matlosz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: IMRET 5 featured more than 80 oral and poster communications, covering the entire interdisciplinary field from design, production, modeling and characterization of microreactor devices to application of microstructured systems for production, energy and transportation, including many analytical and biological applications. A particularly strong topic was the investigation of the potential of microstructuring of reactors and systems components for process intensification. Perspectives of combining local, in situ, data acquisition with appropriate microstructuring of actuators and components within chemical and biological devices were explored in order to enhance process performance and facilitate process control.
Download or read book Electrochemical Engineering written by Thomas F. Fuller and published by John Wiley & Sons. This book was released on 2018-02-15 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Comprehensive Reference for Electrochemical Engineering Theory and Application From chemical and electronics manufacturing, to hybrid vehicles, energy storage, and beyond, electrochemical engineering touches many industries—any many lives—every day. As energy conservation becomes of central importance, so too does the science that helps us reduce consumption, reduce waste, and lessen our impact on the planet. Electrochemical Engineering provides a reference for scientists and engineers working with electrochemical processes, and a rigorous, thorough text for graduate students and upper-division undergraduates. Merging theoretical concepts with widespread application, this book is designed to provide critical knowledge in a real-world context. Beginning with the fundamental principles underpinning the field, the discussion moves into industrial and manufacturing processes that blend central ideas to provide an advanced understanding while explaining observable results. Fully-worked illustrations simplify complex processes, and end-of chapter questions help reinforce essential knowledge. With in-depth coverage of both the practical and theoretical, this book is both a thorough introduction to and a useful reference for the field. Rigorous in depth, yet grounded in relevance, Electrochemical Engineering: Introduces basic principles from the standpoint of practical application Explores the kinetics of electrochemical reactions with discussion on thermodynamics, reaction fundamentals, and transport Covers battery and fuel cell characteristics, mechanisms, and system design Delves into the design and mechanics of hybrid and electric vehicles, including regenerative braking, start-stop hybrids, and fuel cell systems Examines electrodeposition, redox-flow batteries, electrolysis, regenerative fuel cells, semiconductors, and other applications of electrochemical engineering principles Overlapping chemical engineering, chemistry, material science, mechanical engineering, and electrical engineering, electrochemical engineering covers a diverse array of phenomena explained by some of the important scientific discoveries of our time. Electrochemical Engineering provides the critical understanding required to work effectively with these processes as they become increasingly central to global sustainability.
Download or read book Interfacial Phenomena Observed in Electrochemical Systems li ion Batteries Fuel Cells Dye Sensitized Solar Cells Causes Relevance and Enhancements written by Shabab Amiruddin and published by . This book was released on 2008 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
