A Brief introduction of the Speaker
Dr. Guannan Xu, an Associate Professor at the Institute of Applied Physics and Materials Engineering, University of Macau, and a Fellow of the Royal Society of Chemistry, has been consistently recognized as one of the top 2% of scientists globally by Stanford University/Elsevier since 2021. Dr. Xu obtained his Ph.D. in Electrical and Electronic Engineering from the University of Hong Kong in 2009. He subsequently conducted postdoctoral research in the Department of Electrical and Computer Engineering at Rutgers, The State University of New Jersey, USA, and joined the School of Materials Science and Engineering at Pusan National University, South Korea, in 2009. Dr. Xu has published over 250 SCI-indexed papers in internationally renowned journals, including Angewandte Chemie International Edition, Advanced Materials, and Advanced Energy Materials. His research has been cited more than 13,600 times, with an H-index of 65. He holds 36 authorized patents. Currently, Dr. Xu serves as an Associate Editor for journals such as Frontiers in Materials, Smart Materials and Devices, and Material Science & Engineering International Journal.
Abstract
Potassium ion batteries (PIBS) are strong competitors to lithium-ion batteries (LIBS) in building large-scale, sustainable, environmentally friendly, and safe energy storage systems. This report will focus on the application of phosphorus-based electrodes in PIBS, and explore strategies to enhance the capacity of phosphorus-based electrodes, improve cycling stability, and enhance the electrolyte safety of PIBs. In addition, X-ray photoelectron spectroscopy (XPS) and other detection methods will be emphatically introduced to reveal the dynamic evolution process of the solid electrolyte facial mask (SEI film) on the surface of the phosphorus-based anode in the organic phosphate electrolyte. This approach provides an explanation for the extended cycling stability observed in these systems. Lastly, approaches to enhance the cathode electrode for PIBs will also be discussed.
