Beyond Li Ion

Showing 1–4 of 15 results

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  Electrolyte Flow Control to Reduce Dendrite and SEI Growth in Lithium Metal Batteries

  Dendrite growth in lithium metal batteries often leads to accelerated failure. SEI growth, breakage under excessive stress around dendrite tips, and re-growth on freshly exposed Li-surfaces leads to rapid capacity deterioration. Till date, a tough, mechanically stable SEI has been thought of as a necessity to prevent further SEI growth and to suppress dendrites. In this presentation, we will demonstrate that electrolyte flow can possibly eliminate dendrite growth, and also reduce SEI growth significantly, thus increasing stability and coulombic efficiency. The required electrolyte flow rates are low enough to be practically achieved by microfluidic pumping techniques.

  This webinar will focus on the following key topics:

  • Creeping normal electrolyte flow can eliminate dendrite growth
  • Creeping normal electrolyte flow increases the columbic efficiency and reduces SEI growth
  • Creeping parallel electrolyte flow significantly reduces dendrite growth
  • A mechanically stable tough SEI layer is not a necessity for stable dendrite free electroplating
  • Required flow rates may be achieved practically
  
  Presenter
  Mihir Parekh – PhD Candidate, Penn State University

  Mihir got his Bachelor and Master of Technology degrees (B. Tech and M. Tech) in Energy Science and Engineering from Department of Energy Science and Engineering at IIT Bombay, India. Currently he is a PhD candidate in Mechanical Engineering at Penn State University in Dr. Christopher Rahn’s group. He is studying the effect of electrolyte flow on dendrite and SEI growth in lithium metal batteries. During his undergrad, he has worked on Vanadium Redox flow batteries, and his Master’s thesis was on designing a heat exchanger for cooling a nuclear reactor spent fuel pool.

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  Will Lithium-Sulfur Batteries be Part of the Future of Energy Storage?

  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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  All Solid-State Batteries and the Future of Energy Storage

  The development of all solid-state batteries (ASSBs) has seen tremendous progress in recent years. However, several barriers still need to be overcome before ASSBs can be commercialized. These obstacles include poor interfacial stability, scalability challenges as well as the difficulty to precisely diagnose problems within the cell. Additionally, efforts to develop sustainable recyclability in lithium ion batteries are still lacking. In this webinar, we discuss SSEs chemistries and its implications on interfacial stability. We also cover the current state-of-the-art characterization techniques and evaluate future ASSB prototyping strategies. Finally, we hope to discuss potential strategies toward a sustainable ASSB recycling model to address the growing lithium ion battery waste problem.

  This webinar will focus on the following key topics:

  • Overview of solid-state batteries and solid-state electrolyte research
  • Importance of interfacial stability – correlate chemical, electrochemical and mechanical-induced reactions
  • Challenges for diagnosis / characterization of buried interfaces and lithium dendrites
  • Scalable fabrication considerations of commercialized all-solid-state batteries
  • Sustainability – Battery recycling concerns of Cost, Efficiency and the Environment

  Presenters
  Dr. Y. Shirley Meng – Professor at University of California San Diego
  Darren Tan – Founder and CTO at Unigrid Pte. Ltd.

  Dr. Y. Shirley Meng holds the Zable Endowed Chair Professor in Energy Technologies and is professor in NanoEngineering at UC San Diego. Shirley is the principal investigator of the research group – Laboratory for Energy Storage and Conversion (LESC). She is the founding Director of Sustainable Power and Energy Center (SPEC).

  Darren Tan is a founder and CTO of Unigrid Pte. Ltd. He is also a Chemical Engineering PhD student working at UC San Diego with the LESC group.

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  Solid-State Li-Ion Batteries – Key Technology Approaches & Time-to-Market

  Attendees will learn which solid-state batteries have been launched already into beachhead markets, and which technology barriers for now prevent deployment in mass EV applications. Risks & opportunities identified in IP portfolios by large battery & automotive manufacturers and key startups will be compared with go-to-market & technology readiness statements. Finally, we will explain why hybrid battery packs or cells based on both liquid and solid electrolytes could potentially accelerate the automotive adoption of solid-state batteries.

  This webinar will focus on the following key topics:

  • Solid-state Li-ion batteries
  • Key innovation approaches & global patent literature
  • Time-to-market with respect to key applications: electronics/IoT, medical implants, automotive/rolling stock, stationary energy storage
  • Examples of solid electrolyte, cathode & anode selection
  • Combination of solid electrolytes with liquid electrolytes at the pack or cell level

  Presenter
  Dr. Pirmin Ulmann – Co-Founder & CEO, B-Science.net

  Dr. Pirmin Ulmann is co-founder and CEO of b-science.net, an information service for the battery patent literature that is based on a supervised machine learning approach. Pirmin obtained a diploma in chemistry from ETH Zurich (Switzerland) in 2004 and a PhD from Northwestern University (USA) in 2009, followed by a postdoc at Tokyo University (Japan). From 2010 to 2016, while working at a major Li-ion battery materials manufacturer, he was a co-inventor of 7 patent families. He holds the credential Stanford Certified Project Manager and has co-authored scientific publications with more than 1,500 citations.

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