by Jinhyuk Lee, McGill University, Materials Engineering
With an ever-increasing demand for electrical energy storage for electric vehicles and large-scale renewable-energy storage, high-performance and low-cost Li-ion batteries (LIBs) have been intensively sought after in the past decades. Yet, the development of such batteries has been impeded by the absence of cheap and high-energy cathode materials. As one of the seven components of LIBs, the cathode is responsible for nearly 40% of the materials cost and is twice as heavy as the anode, making the LIB’s performance per weight and cost depend most heavily on the cathode material. This cathode issue mainly originates from that conventional cathodes have been designed from the so-called layered lithium transition metal oxides (e.g., LiCoO2, LiNi1/3Mn1/3Co1/3O2), which require the use of expensive, rare, and heavy transition metals, in particular Cobalt (Co), to stabilize their structure. In this talk, by discussing the recent development of the so-called disordered-rocksalt-type cathode materials with high energy density and a low cost, we will demonstrate how a combined experimental and theoretical research can accelerate the discovery of advanced Co-free cathodes for sustainable LIBs.
Dr. Jinhyuk Lee is an Assistant Professor of Materials Engineering at McGill University since January 2020. Before joining McGill, Dr. Lee performed postdoctoral research at MIT (Nuclear Science and Engineering) and UC Berkeley (Materials Science and Engineering). Dr. Lee received his Ph.D. in Materials Science and Engineering from MIT in 2015. Dr. Lee’s research interest is discovering sustainable battery materials based on experimental and theoretical materials research. His work on disordered rocksalt Li cathodes has paved a new avenue of materials development in the battery community. He was one of five finalists of the Science Award Electrochemistry 2019 by Volkswagen–BASF and is a 2020 recipient of the NSERC Discovery Accelerator Supplement, which is one of the most prestigious research grants in Canada.
For more information, please contact Vanessa Irizarry at [email protected]