Summary: Improving energy density, power density, cycle life and safety and decreasing cost of current Li-ion batteries are highly desirable for...
Summary: Improving energy density, power density, cycle life and safety and decreasing cost of current Li-ion batteries are highly desirable for the applications of advanced portable electronic devices, electrical tools, electrical vehicles, storage batteries for renewable energy, and stationary batteries for smart grids. Understanding lithium storage mechanism and structure-property relationship across length scales are essential for rational design of new materials. Here we report our recent efforts on investigating the electrode materials, including Si anode, LiFePO4 and Li2MnO3 cathodes for Li-ion batteries, using force curve mode of SPM, synchrotron in situ/ex situ XAS and XRD, ABF-STEM, neutron diffraction techniques as well as first principles calculations. Much attention is focused on the variation of lattice and electronic structure of electrode materials during lithiation and delithiation and the multiple layer structure of the solid electrolyte interphase (SEI).
Hong Li is a Professor of Key Laboratory for Renewable Energy, Institute of Physics (IOP), Chinese Academy of Sciences (CAS), and a deputy director of Beijing National Laboratory for Condensed Matter Physics. He obtained his BS degree in physical chemistry from Lanzhou University in 1992, Master-degree in Electrochemistry in Changchun Institute of Applied Chemistry, CAS in 1995 and the PhD degree in condensed matter physics from IOP, CAS in 1999. He was a post-doctor in Max-Planck-Institute for Solid state Research from 2001 to 2003 and a visiting scholar in Brookhaven National Laboratory in 2007 and 2011. He has studied advanced materials and energy storage/conversion mechanisms in batteries and other solid state ionic devices. He has published over 140 papers in peer-reviewed SCI journals with over 4000 times citation and the H-index is 34. He has given invited 30 talks in international academic conferences. He has filed over 60 patents and over 20 have been granted.