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Lithium-sulfur batteries can displace lithium-ion by delivering higher specific energy at a lower cost. Presently, however, the superior energy performance fades rapidly due to instability issues of the electrodes and the electrolyte. Extensive research and considerable progress over the past ten years have solved the instability issue of the sulfur electrode to a large extent. However, the formidable challenges of the more difficult electrode, lithium metal, (safety and cyclability) are yet to be resolved. Therefore, Lithium-Sulfur battery research programs should have at their heart, stabilizing the lithium electrode, as addressing it is predicted to ensure a rapid transition to commercial level life-spans. After all, the highest specific energy can be achieved by battery chemistries that utilize lithium metal as the negative electrode.
This webinar will focus on the following key topics:
• What’s so good about sulfur?
• Great capacity brings great stress!
• Will we see the revolutionary return of Lithium metal?
• Electrolyte challenges (we need too much of it but it’s heavy!)
• Current status and future prospects
Presenter
Dr. Mahdokht Shaibani – Research Fellow at Monash University
Dr. Mahdokht Shaibani has expertise in materials synthesis, engineering, and scale-up for next-generation energy storage systems including lithium-sulfur batteries, silicon anodes, flow batteries, supercapacitors, and lithium-ion capacitors. She has conducted research in developing expansion-tolerant architectures for high capacity electrodes such as sulfur and silicon, fabrication of separators, synthesis of graphene and carbon materials for supercapacitors, and exploring the use of lithium-sulfur batteries for more sustainable and clean transportation and grid storage. Mahdokht has a PhD in Mechanical Engineering, with a focus on energy storage from Monash University, Australia.
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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.
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Chris Beasley – Gamry Instruments
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Advancing Mining Processes to Make Better Materials for Use in Lithium Ion Batteries
American Manganese Inc has developed a low-cost, environmentally friendly hydrometallurgical process to recover manganese (Mn) from lower grade resources. American Manganese has applied for a patent for their hydrometallurgical process that produces electrolytic manganese metal with low energy and water consumption. American Manganese commissioned R&D contractor, Kemetco Research Inc to determine uses of Artillery Peak manganese resource material to generate high value alternative products. Chemical manganese dioxide (CMD) and lithiated manganese oxide (LixMn2O4) for use in rechargeable batteries were the areas researched.
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Norman Chow – President – Kemetco Research, Inc.Norman earned a B.A.Sc. and M.A.Sc. in Metals and Materials Engineering from University of British Columbia. He is a Registered Professional Engineer (P. Eng.) in British Columbia. He has over 15 years of technology development and contract research experience. He is the President of Kemetco Research Inc., which he formed after acquiring the Industrial Process Division of BC Research Inc. BC Research had been in operation for over 60 years as an R&D contractor.
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