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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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