May 18, 2026 -  Ryan Hall, Room #4003

Northwestern University-Evanston Campus
10:30 - 11:30 AM Coffee & Seminar

No Registration Required!

Extremely fast-charging lithium-ion batteries are desired to reduce the charging time (<15 min) for electronics and electric vehicles. The low-cost and environmentally-friendly LiMn2O4 is one of the cathodes with the best ionic diffusivity due to the three-dimensional Li-ion diffusion channels. However, LiMn2O4 usually exhibits low rate-capacity and rapid structural degradation at high charging rates. Here, by introducing multiple additional cations to increase the entropy of LiMn2O4, we have significantly improved its rate performance and stability. As a result, the entropy-increased LiMn2O4 can now operate at 10C over 1000 cycles, reducing the charging time to just 6 minutes. Meanwhile, a brief introduction on the Nb2O5-based anode materials for fast-charging lithium-ion batteries will also be present

Speaker

Jingsong Wu Executive director of the Nanostructures Research Center at Wuhan University of Technology

"Nanostructured electrode materials for fast-charging lithium-ion batteries" Jinsong Wu, professor of the state key laboratory of advanced technology for materials synthesis and processing, is executive director of the Nanostructures Research Center at Wuhan University of Technology. He had worked at world-renowned electron microscopy centers in France, Germany, and the United States, in electron microscopy research for over 20 years. He is currently a council member of the Chinese Society of Electron Microscopy. He has primarily focused on advancing in-situ high-resolution electron microscopy, applying it to study the lithiation mechanisms of battery electrode materials and the resistive switching mechanisms of semiconductor memristors. He has published more than 300 scientific papers.