CNT sponge Host for Stable Lithium Metal Anode
Xi’an Jiaotong Unviersity
Abstract: Lithium (Li) metal anode has been regarded as “Holy Grail” for lithium-ion based batteries due to its light-weight and high specific capacity. However, the issues of Li dendrite formation and infinite volume expansion should be overcome before its practical application. This presentation will propose a strategy with three-dimensional (3D) CNT host to restrict the dendrite formation and volume change effectively. The 3D host was prepared by CVD growth of CNT sponge on Cu foil. In this way, excellent performance was achieved for the Li metal anode with high Coulombic efficiency ~99% at current density of 1 mA/cm2 over 250 cycles.
Biography: Dr. Xiaogang Han is a professor in Xi’an Jiaotong University (XJTU) in China. He graduated from Shanxi University with a bachelor degree in material chemistry in 2000, and later on pursued his doctoral studies with Prof. Zhaoxiang Deng at the University of Science and Technology of China. After obtaining his Ph.D. degree in 2009, he continued to work on inorganic nanomaterial synthesis and application in the next two years as a postdoc with Prof. Yadong Yin at the University of California, Riverside. Then, Dr. Han joined in Prof. Liangbing Hu’ research group at University of Maryland at College Park where he started his researches on electrochemical energy storage. In 2015, he became an Assistant Research Scientist at the University of Maryland. In 2016, he started to work at XJTU with a Young Talent Support Plan, mainly focusing on the studies of solid-state lithium batteries, lithium metal protection, and holey graphene applications. He so far has published about 50 research papers on scientific journals including Nat. Mater, J. Am. Chem. Soc., Adv. Mater., Nano Lett., and ACS Nano. From 2016, he has been an executive director for Xi’an nanotechnology and nanoscience society, and also associate editor for Frontier-Energy Research.