$0.00
As a sustainable power source for automobiles, PEFC (Polymer Electrolyte Fuel Cells) have been investigated for further improvement of their durability. In general, the degradation of PEFCs is caused by various factors under operation. Thus, a comprehensive analysis is required to understand these important degradation factors.
This presentation will share evaluation by multi-analysis method of degraded PEFCs after their cycling. It was found that Si was contaminated in the cathode catalyst layer, and that Pt particles were enlarged in the cathode catalyst layer near the cathode gas outlet area. In addition, it was found that the degradation of the ionomer was more likely to occur near the cathode gas inlet area.
This webinar will focus on the following key topics:
• Polymer electrolyte fuel cells (PEFCs)
• Durability test
• Ionomer
• Comprehensive degradation analysis
Presenter
Tomohiro Sakata – Senior Research Chemist at Toray Research Center
Tomohiro Sakata is senior research chemist using photoelectron spectroscopy at Toray Research Center. He received Ph.D. in surface physics in 2014. He worked at Innovation Research center for fuel cells, the University of Electro-Communications after postdoc at RWTH Aachen university. His area of expertise is in the analysis of semiconductors using photoelectron spectroscopy and fuel cells using X-ray absorption fine structure.
Toray Research Center, Inc. is a proud sponsor of this event.
Related products
-
Battery Selection Tutorial Course 3/3: Integrating Your Battery Into Your Product – Designing for Worst-Case Scenarios
The last part in Exponent’s three-part series, this webinar will focus on the finished product from the viewpoint of the battery. How can you best protect your battery within your device? Is your battery going to be user-replaceable? If you’re creating multi-cell packs, how should they be separated from (yet still connected to) each other? Should a thermal event occur, how can you prevent that from cascading through the whole pack? This webinar will help to answer many of those questions, and discuss design questions to help safeguard your battery pack throughout its entire lifecycle.
This webinar will focus on the following key topics:
• Creating multi-cell packs
• Containing thermal runaway eventsPresenter
Buy Now
Exponent – a multidisciplinary engineering and scientific consulting firm with significant experience in various aspects of battery design, safety testing and failure analysis. -
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.
Buy Now -
Non-Destructive Testing: Insuring Safety, Reliability, and Reducing Cost of Li Batteries
Non-destructive non-contact electromagnetic, ultrasonic, holographic interferometry, gas discharge visualization, and combined methods are innovative tools for successful coordination of stages of R&D, manufacturing, and applications of Li batteries. Deployment of automated non-destructive quality assurance technology at every stage of the manufacturing process will increase the reliability and safety of batteries, while lowering overall manufacturing costs.
This webinar will focus on the following key topics:
• Physical principles of the non-destructive & non-contact methods for evaluation and testing of Li batteries during production:
– Initial materials, including nano-structured powders of electrode materials
– Polymer and solid inorganic electrolytes
– Properties of electrodes during coating, including the resistance of interface between current collectors and electrode mass
– Multi-layered electrode structures, as Jelly roll dry electrode structure
– Final product
• Design of equipment for non-destructive testing
• Examples of using the non-destructive methods in Li batteries, super-capacitors, solar cells, chemical industry, and other industries (example – evaluating the properties of the cement)
• Benchmarking, and the market of application for non-destructive, non-contact testingPresenter
Dr. Elena Shembel – Chairman & CEO at Enerize CorporationDr. Shembel is co-inventor of more than 50 patents and patent applications worldwide, including 15 US Patents and 1 Great Britain patent during last 8 years in the areas of batteries, solar cells, fuel cells, and non-destructive methods of testing. She earned PhD in “Electrochemical processes for systems with porous matrices for space systems”, and degree of Doctor of Chemical Sciences at the FSU Academy of Sciences Institute of Electrochemistry, Moscow for her work in processes and optimization of lithium batteries.
-
Stability of Li7La3Zr2O12 Garnet Solid-State Electrolyte Against Metallic Lithium
Energy storage demands will require safer, cheaper and higher performance electrochemical energy storage. While the primary strategy for improving performance has focused on state-of-the-art Li-ion batteries, this work seeks to develop solid-state batteries employing metallic Li anode. Recently, the ceramic electrolyte, Li7La3Zr2O12 (LLZO) cubic garnet, has shown promise owing to its unique combination of properties such as high Li-ion conductivity and electrochemical stability. Generally, LLZO is synthesized through powder processing and sintering at high temperature to produce dense membrane. Processing of the ceramic materials produces internal and surface flaws which will inhibit lithium transport creating localized current density and control the stability against Li dendrite propagation. This presentation will discuss new improvement in methodology to evaluate the integrity of LLZO membrane.
This webinar will focus on the following key topics:
• Methodology to evaluate the integrity of LLZO by identifying the microstructural flaws and their impact on mechanical properties
• DC cycling, EIS, XPS will be shown to determine the reactions that govern the maximum current density
• Correlate the electrochemical stability and critical current density with defects in polycrystalline solid state LLZO electrolytePresenter
Asma Sharafi – PhD Student with Jeff Sakamoto at University of MichiganAsma received her MS in Chemistry (material science) in 2013 at University of Georgia. Currently, she is a PhD student in Mechanical Engineering at University of Michigan under Jeff Sakamoto’s supervision. The primary focus of her research is on the development of new solid state electrolyte (SSE) with the garnet structure (Li7La3Zr2O12) that offer unprecedented safety and durability.
Buy Now