The Role of All-Solid-State Batteries for Grid Energy Storage

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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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  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.

  The research was successful in producing CMD from Artillery Peak resource material with low cation impurities and avoiding processing steps that are known to introduce metallic impurities in the final product. Cation impurities cause capacity fade, whereas metallic impurities are known to cause catastrophic failures (such as fire and explosions) in lithium ion batteries. Working rechargeable lithium ion coin cell battery prototypes were produced from the CMD material.

  This webinar will focus on the following key topics:

  • Catastrophic failure of Li Ion batteries caused by metallic impurities that may be introduced from the mining of raw materials
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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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  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:

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  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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  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 electrolyte

  Presenter
  Asma Sharafi – PhD Student with Jeff Sakamoto at University of Michigan

  Asma 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.

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