【Speaker】    Xiong Wen (David ) Lou 
                   Nanyang Technological University, Singapore
【Time】        2016-9-27 16：00-17：30
【Venue】      Room 202, Lujiaxi Building

Abstract：
Hollow nanostructures are promising as electrode materials for electrochemical energy storage, including lithium-ion batteries, supercapacitors and lithium-sulfur batteries. In this talk, I will briefly discuss the design, synthesis and electrochemical properties of hollow nanostructures of metal oxides/sulfides. Specifically, we have been able to synthesize different hollow nanostructures of many binary metal oxides such as SnO₂, Fe₂O₃ and Fe₃O₄, and many mixed transition metal oxides/sulfides such as NiCo₂O₄ and NiCo₂S₄. We have also designed carbon hollow structures to fabricate advanced cathode materials for lithium-sulfur batteries. Most recently, we also designed some advanced hollow structures of carbon-metal oxide including MnOx-carbon and TiOx-carbon for lithium sulfur batteries.

References:
[1] Z. Y. Wang, L. Zhou, X. W. Lou, Metal oxide hollow nanostructures for lithium-ion batteries, Adv. Mater. 2012, 24, 1903 – 1911.
[2] L. F. Shen, L. Yu, H. B. Wu, X. Y. Yu, X. G. Zhang, X. W. Lou, Formation of nickel cobalt sulfide ball-in-ball hollow spheres with enhanced electrochemical pseudocapacitive properties, Nat. Commun., 2015, 6, 6694.
[3] Z. Li, J. T. Zhang, B. Y. Guan, D. Wang, L. M. Liu, X. W. Lou, A new sulfur host based on metallic and polar TiO@carbon hollow spheres for advanced lithium-sulfur batteries, Nat. Commun., 2016, in press.
[4] Z. Li, J. T. Zhang, X. W. Lou, Hollow carbon nanofibers filled with MnO2 nanosheets as a highly efficient sulfur host for lithium-sulfur batteries with high energy density and long cycle life, Angew. Chem. Int. Ed. 2015, 54, 12886 – 12890.
[5] H. Hu, B. Y. Guan, B. Y. Xia, X. W. Lou, Designed formation of Co3O4/NiCo2O4 double-shelled nanocages with enhanced pseudocapacitive and electrocatalytic properties, J. Am. Chem. Soc., 2015, 137, 5590 – 5595.