Atomic Force Microscopy Webinars

In-Situ Studies of SEI Evolution in Li-Ion Batteries: Morphology, Mechanics, and Electrochemistry

In this joint Webinar with Brown University and General Motors, we report in situ and operando characterization of Li-Ion Batteries in a glovebox with < 1 ppm O2 and H2O stable environment.

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Explore Advanced AFM Applications in Battery Research

In this joint Webinar with Brown University and General Motors — In-Situ Studies of SEI Evolution in Li-Ion Batteries: Morphology, Mechanics, and Electrochemistry — Dr. Xingcheng Xiao and Ravi Kumar discuss their studies on in-situ and in-operando characterization of Li-Ion Batteries in a glovebox with < 1 ppm O2 and H2O stable environment.

The speakers are able to show, for the first time, the in-operando cracking of the SEI layer and its impact on surface morphology, mechanics, and electrochemistry. They then offer guidance on tailoring passivation layers for optimal performance of Li-Ion batteries.

Key Points

Watch to learn more about:

How the speakers investigated the formation, evolution and failure mechanisms of SEI layers.
Why PeakForce imaging with precise, stable force control enables AFM imaging on this previously highly challenging, fragile SEI layer.
How to use one of the key techniques employed — PeakForce SECM — to simultaneously characterize local topographical, mechanical, electrical and electrochemical information.

This webinar was presented on: November 16, 2016

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Dr. Xingcheng Xiao
Staff Scientist, General Motors Global R&D Center

Dr. Xingcheng Xiao is a staff scientist at General Motors Global R&D Center. He obtained his Ph.D degree from the Chinese Academy of Sciences. He worked as a research associate at the Argonne National Laboratory and Brown University before joining General Motors in 2006. He has published over 130 peer reviewed journal papers, and has 34 granted patents and over 30 pending patent applications in different fields. He is the recipient of Alexander von Humboldt Fellowship (2001), 2013 R&D 100 Award, 2013 SME Innovations That Could Change the Way We Manufacture, and 2015 R&D 100 Award Finalist.

Ravi Kumar
Brown University

Ravi Kumar is a PhD student in Materials Engineering at Brown University. He obtained his Bachelor’s degree from IIT Kanpur, India in 2008. After that he worked at Tata R&D in India for 3 years before joining Brown. The focus of his PhD thesis is on failure mechanisms of Li-ion batteries based on both thin film and practical composite architectures.