About This Webinar
With an increasing demand for higher energy and power density of lithium ion batteries (LIBs), the coupled electrochemical-mechanical degradation of electrode materials becomes a more pressing problem. In
particular, fracture and delamination of electrodes can occur during repeated charging and discharging of LIBs. An improved understanding of the mechanical behaviour of electrode materials is therefore important. In this free webinar, Dr. Cheng will present three complementary measurement techniques: (1) in situ electrochemical nanoindentation, (2) peel adhesion and cohesion test, and (3) electrode curvature
measurement for battery R&D. Examples include silicon/polymer porous composite electrodes, lithium metal electrodes, and ceramic materials for the positive electrode and solid-state electrolyte. These characterization techniques may also be used to investigate the coupled electrochemical-
mechanical behaviour of a wide range of electrochemical energy storage materials under realistic working conditions.
About The Speaker
Dr. Cheng is the Frank J. Derbyshire Professor of Materials Science and Professor of Physics and Astronomy (joint appointment) at the University of Kentucky where he has worked since 2008. Previously, he was a Technical Fellow and Laboratory Group Manager for Engineered Surfaces and Functional Materials at the General Motors Research and Development Center. He graduated from the California Institute of Technology with a BS degree in physics/mathematics, and MS and PhD degrees in applied physics. He has published more than 250 papers and holds 48 US patents. He is a Fellow of the American Physical Society, Materials Research Society, and National Academy of Inventors.