Electrochemistry

Showing 21–30 of 39 results

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    Battery EIS Tutorial Course 4/4: Factors Affecting EIS Measurements – How to Check and Correct

    When performing an impedance measurement, it is necessary to ensure that the modulation is low enough such that the behavior of the system is linear. It should also be confirmed that the system does not vary in time, and that its stationary state is reached. Several strategies are given to check and correct these phenomena.

    This webinar will focus on the following key topics:

    • For reliable EIS measurements, it should be checked that the response of the system is linear, time-invariant and stationary
    • Several strategies are presented to perform reliable impedance measurements

    Presenter
    Dr. Nicolas Murer – Product Manager and Applications Engineer at Bio-Logic SAS, France

    Dr. Nicolas Murer is a Product Manager and Applications Engineer at Bio-Logic SAS, France, which designs and manufactures high performance research grade instrumentation and software : potentiostats/galvanostats with built-in Electrochemical Impedance Spectroscopy (EIS), Battery Cyclers, Frequency Response Analyzers for materials analysis, and scanning probe electrochemical workstations. Nicolas received his engineering diploma from Polytechnic Institute of Grenoble in electrochemistry and materials in 2003. He then received his Ph.D. at Université de Bourgogne in 2008. Prior to joining Bio-Logic, he was a post-doctorate at the Ohio State University, Columbus, Ohio (USA).

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    Electrochemical Impedance Spectroscopy (EIS) Quality Indicators

    The response of a linear and time invariant system to a sinusoidal stimulus of a given frequency is a sinus wave of the same frequency. The amplitude spectra obtained by the Fourier transform will reveal only one spectral line. In the case of a nonlinear system the amplitude spectra will contain several spectral lines called harmonics. The total harmonic distortion (THD) coefficient for N chosen harmonics can be used as an indicator of the system nonlinearity. In the case of a non-stationary system spectral lines appears in the vicinity of the main harmonic. The non-stationary distortion (NSD) coefficient calculated as the RMS ratio of amplitudes of the near-side frequencies to the amplitude of the fundamental can be used as an indicator for non-stationarity.

    Examples of THD and NSD calculations are given highlighting the quality of low frequency impedance measurements on batteries.

    This webinar will focus on the following key topics:

    • General requirements for good impedance measurements
    • Effects of non-linear systems on EIS measurements
    • Effects of non-stationary systems on EIS measurements
    • THD as an indicator of system non-linearity
    • NSD as an indicator of system non-stationarity

    Presenter
    Dr. Bogdan Petrescu – Senior Scientist at Bio-Logic SAS, France

    Bogdan Petrescu is a senior scientist at Bio-Logic Science Instruments. He received his Ph.D in both fields of electrochemistry and electronics in 2002 from the Polytechnic Institute of Grenoble and the Polytechnic University of Bucharest respectively. He was involved for many years in the development of the Bio-Logic potentiostats and battery cyclers. He has a strong expertise in the field of instrumentation for electrochemistry research and more particularly in the research and development of energy storage devices such as batteries and supercapacitors.

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    Preventing Li Ion Battery Failures From a Manufacturing and Design Perspective

    How can you be proactive and make sure your cell supplier is the right one and you don’t end up with thermal events and field failures? Is it enough to qualify a cell manufacturer according to industry standards? The answer is that the majority of compliance based testing is related to abuse tolerance. However, the vast majority of field failures do not occur under abuse scenarios, but happen under normal operating conditions due to manufacturing flaws or design and system tolerance issues that cause internal shorts. In this webinar, you will learn about common lithium ion battery failure modes and how to be proactive in preventing these.

    This webinar will focus on the following key topics:

    • Gain an understanding of lithium ion battery failure mechanisms and the pathway to thermal events
    • Learn how cell design impacts battery safety and reliability
    • Learn the basic steps in a lithium ion cell manufacturing process, and how the process controls affect safety and reliability
    • Come away with a checklist to qualify your cell manufacturer

    Presenter
    Vidyu Challa – Technical Director at DfR Solutions

    Vidyu Challa is Technical Director at DfR Solutions where she works on battery reliability and safety issues. Dr. Challa helps customers with their battery challenges including design reviews, manufacturing audits and supplier qualification. She obtained a PhD from CALCE Electronic Products and Systems Center at the
    University of Maryland. She has broad based expertise that includes engineering technology start-up experience, product development, R&D, and business development. Dr. Challa has published her work in journals, presented at conferences and written blog articles.

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    Avoid Battery Explosions and Fires – With Right Data and Better Designs

    Modern Li Ion batteries contain hazardous chemicals and heat up during use – this combination always has the potential to cause fires and explosions. This presentation will focus on improving the understanding of how such incidents occur, what can be done to avoid them and how the risk can be minimized during early stage design.

    The solution lies in knowledge of the heat generation rate during normal use, and information about safe boundaries such as temperature, discharge rate & overcharge in realistic situations that represent actual conditions of use. Data from commercial batteries of different types, including videos of batteries undergoing thermal runaway, will be used to illustrate these points.

    A relatively new technique will also be discussed with data, which allows total heat output during discharge to be measured on-line and this can be used both for design and battery modelling. Examples of the data will be provided.

    This webinar will focus on the following key topics:

    • Why battery fires and explosions occur
    • How to design safer batteries through understanding of heat generation
    • Video evidence of batteries under explosive conditions
    • How better thermal management systems can be designed – based on heat measurement from isothermal calorimetry
    • Laboratory instruments suitable for testing and data generation

    Presenter
    Dr. Jasbir Singh – Managing Director at Hazard Evaluation Laboratory

    Jasbir is a chemical engineer specializing in thermal hazards and calorimetry, traditionally for the chemical industry but now increasingly involved in battery safety, especially Li-ion EV and related types.

    A graduate of Imperial College (London), where he undertook PhD into combustion and explosions, his experience includes many years in process design for the chemical and petrochemical industries. He is currently developing test methods and instruments for use in design of battery thermal management systems.

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    Electrochemical Impedance Spectroscopy and Its Application to Battery Analysis

    Electrochemical Impedance Spectroscopy (EIS) is a well-established experimental technique that has applications in coatings, corrosion, sensors, electrochemical double layer capacitors, batteries among others. The power of EIS partly comes from its ability to access a very wide range of frequencies (typically from MHz to μHz). For batteries, parameters such as the internal resistance, electrode surface capacitance and leakage are accessible at different frequencies across the spectrum. This allows EIS to gather all the relevant information with a single measurement. In this webinar, we will briefly introduce EIS and cover its application to batteries. We will talk about how to analyze typical data and how to gather the relevant information. We will further talk about available instrumentation and their limitations.

    This webinar will focus on the following key topics:

    • What is impedance spectroscopy?
    • What can impedance spectroscopy do for Battery analysis?
    • How can capacitance, internal resistance and leakage be determined using EIS?
    • What are the instrumental requirements and limits?

    Presenter

    Chris Beasley – Gamry Instruments

    Chris Beasley received a BS in Chemistry from Kutztown University in 2000 and got a PhD in electrochemistry from University of North Carolina at Chapel Hill in 2010. His doctoral dissertation was on using redox-active nanoparticles as supercapacitors. Chris joined Gamry Instruments in 2010.

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    Understand and Prevent Battery Fires and Explosions – and Avoid Costly Failures Like the Samsung Note 7

    Modern batteries (eg Li-Ion) contain hazardous chemicals & they heat up during use: this combination always has the potential to cause fires & explosions. This presentation will focus on improving the understanding of how these incidents occur, what can be done to avoid them & how the risk can be minimized during early stage design.

    The Samsung Note 7 phone & Boeing Dreamliner airplane fires are very costly examples of how even large corporations fail to understand the potential fire risk of batteries.

    The solution lies in knowledge of heat generation rate during normal use & information about safe boundaries such as temperature, discharge rate & overcharge, in realistic situations that represent actual use conditions. Data from commercial batteries of different types will be used to illustrate these points.

    A relatively new technique will also be discussed with data, which allows total heat output during discharge to be measured on-line and this can be used both for design and battery modelling. Examples of the data will be provided.

    This webinar will focus on the following key topics:

    • Why battery fires & explosions occur
    • How to design safer batteries though understanding of heat generation
    • Video evidence of batteries under explosive conditions
    • How better thermal management systems can be designed – based on heat measurement from isothermal calorimetry
    • Laboratory instruments suitable for testing and data generation

    Presenter
    Dr. Jasbir Singh – Managing Director at Hazard Evaluation Laboratory

    Jasbir is a chemical engineer specializing in thermal hazards and calorimetry, traditionally for the chemical industry but now increasingly involved in battery safety, especially Li-ion EV and related types.

    A graduate of Imperial College (London), where he undertook PhD into combustion and explosions, his experience includes many years in process design for the chemical and petrochemical industries. He is currently developing test methods and instruments for use in design of battery thermal management systems.

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    Solid Electrolytes and Bulk Scale Solid-State Batteries

    Recently, the push to move beyond Li – ion battery technology has grown. Several advanced battery technologies & chemistries have been identified as promising candidates including i) solid-state batteries with Li metal anode, ii) Li – S chemistries, iii) Li – air(oxygen), and iv) flow batteries. Although an engineered solution using liquids may be possible for some of these options, a solid electrolyte is an enabling technology for each of these beyond Li – ion alternatives. This webinar will introduce the operating principles of each of these cell technologies and solid electrolytes will be discussed in this context. The requirements of a solid electrolyte will be outlined & several state of the art solid electrolytes will be compared. Recent technical progress towards the fabrication of solid-state batteries will be reviewed. Finally, an overview of market applications for solid-state will be presented.

    This webinar will focus on the following key topics:

    • Overview of beyond Li – ion battery technologies enabled by solid electrolytes
    • Comparison of state of the art solid electrolytes
    • Recent technical progress towards solid-state batteries
    • Review of market applications for solid-state batteries

    Presenter

    Travis Thompson – Post Doctorate Research Fellow at University of Michigan

    Travis received his B.S. in Mechanical Engineering in 2010 from California State Polytechnic University, Pomona, and his PhD in Materials Science at Michigan State University in 2014. His graduate work has focused on synthesis & processing of materials for direct thermal-to-electric energy conversion & storage. This includes ambient drying of silica aerogels, processing of oxide based thermoelectric materials, & electrochemical characterization of ceramic solid electrolytes for advanced batteries. He is now a Research Fellow at The University of Michigan and is exploring commercialization of Solid-State Batteries from his graduate work.

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    Determination of Battery Safety and Performance Parameters Using Adiabatic and Isothermal Calorimetry

    FREE Webinar – Thermal Hazard Technology is a proud sponsor of this event.

    This presentation describes two main types of calorimetry which can be used to carry out safety and performance testing on batteries. Isothermal calorimeters allow for direct heat measurement on cells during use, while adiabatic calorimeters can measure heat released from batteries during thermal runaway.

    Calorimetry can serve as a quantitative scientific method for evaluation of battery safety but it requires appropriate instrumentation. The principles of operation of both types of calorimeters are described along with specific applications within the field of battery testing.

    A combination of both technics allows for detailed thermal characterization of lithium-ion and other rechargeable cells, and differences due to chemistry, cell design, cell age, state of charge and cell size can be evaluated.

    This webinar will focus on the following key topics:

    • The principles of adiabatic and isothermal calorimetry
    • How calorimetry can be used in battery testing
    • Parameters established by adiabatic safety testing
    • Parameters established by isothermal performance testing
    • Pressure measurement and gas collection

    Presenter
    Danny Montgomery – Technical Performance Manager at Thermal Hazard Technology

    Danny Montgomery has worked at Thermal Hazard Technology for 9 years. His current role is Technical Performance Manager; overseeing the lab and technical aspects of instrumentation manufactured by THT. He joined the company in 2009 after graduating from Southampton University with a master’s degree in physics.

    Danny’s focus is primarily on lithium battery calorimetry; both adiabatic and isothermal. He oversees the use of calorimeters for customer sample testing as well as installing calorimeter systems and provided training for battery and automotive companies worldwide, such as Panasonic, BMW and Samsung. Danny works in Thermal Hazard Technology’s UK office in Milton Keynes.

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    Recycling of Lithium Ion Batteries From Electric Vehicles

    The recycling of lithium-ion batteries – from EVs and others – will be discussed in this webinar.

    Recently, the pilot plant of project LithoRec II could prove that a newly developed combination of process steps enables the recovery of a mass fraction of 75 % and more on a material recycling basis from lithium-ion batteries. This is supposed to be much better than state of the art. Combining different process steps like discharging, dismantling, shredding, sifting and air-jet separation the project partners were able to achieve their goal: proving that lithium-ion batteries can be recycled better. One interesting process dealing with the electrolyte came in a black box (which was actually white) and this was because of another ongoing patenting process of Lion Engineering. A modified and simplified process works to directly recycle scraps from the production of lithium-ion batteries – in order to protect both: the environment and the stakeholder’s money.

    This webinar will focus on the following key topics:

    • Recycling of Lithium Ion Batteries
    • Recycling Yields and how to regain 75% and more – on a material recycling basis
    • Direct Recycling of LIB-Production Scraps

    Presenter
    Christian Hanisch – CEO at Lion Engineering

    Christian studied Process Engineering at TU Braunschweig (Germany) and has worked in the research project LithoRec and designed LithoRec II at the Institute for Particle Technology / TU Braunschweig on the topic of Recycling of Lithium Ion Batteries. He developed and patented new recycling processes and led the project to the realization of a pilot plant. Recognizing the highest interest of industrial partners in this topic he co-founded the spin-off Lion Engineering GmbH with fellow PhD students and Professor Arno Kwade in 2011. Beginning in 2016, Christian started to focus full-time on being CEO of Lion Engineering.

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    Battery Ageing – How Modeling is Used to Predict Battery Life

    Battery modeling and simulation makes it possible to analyze multiple operating conditions and design parameters for batteries and other electrochemical systems and processes. By developing mathematical models you can begin to understand the interaction of electrochemical and chemical processes in the battery and how these processes affect the performance and life of the battery.

    In this presentation, we will take a look at the benefits of modeling and simulation in the design, selection, and operation of a lithium-ion battery. We will especially take a look at how modeling can be used together with testing. These results provide manufacturers and application experts with the data to not only predict battery life but to analyze the implications of design parameters and operating conditions to better understand the limitation of the battery.

    This webinar will focus on the following key topics:

    • Benefits of modeling and simulations in the design, selection, and operation of a lithium-ion battery
    • Implications of design parameters and operating conditions with respect to experimental observations of battery performance, aging, and battery safety
    • How battery modeling can be used together with testing

     Presenter

    Tom O’Hara – Global Business Manager, Intertek

    Tom O’Hara is the global business manager / advisory services for Intertek’s energy storage programs. Aside from his consulting role, Tom supports U.S. and European marketing and sales efforts and APAC CTIA certification efforts. As a 30-year veteran of the battery technology field, Tom has worked in Energizer Battery’s R&D sector and consulted with several start-up battery companies. He is also the co-inventor of the world’s first successful mercury-free zinc air button cell and holds seven U.S. patents. He obtained both a B.S. and M.S. in chemistry from Wake Forest University in North Carolina.

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