报告人：Prof. Dr. Xiong Wen (David) Lou
School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
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.
Z. Y. Wang, L. Zhou, X. W. Lou, Metal oxide hollow nanostructures for lithium-ion batteries, Adv. Mater. 2012, 24, 1903-1911. 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. 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, 7, 13065. 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. 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.
Dr.David Lou received his B.Eng. (1st class honors) (2002) and M.Eng. (2004) degrees from the National University of Singapore. He obtained his Ph.D. degree in chemical engineering from Cornell University in 2008. Right after graduation, he joined Nanyang Technological University (NTU) as an Assistant Professor. He was promoted to Associate Professor since September 2013, and to Full Professor since September 2015. He has published about 240 papers with a total citation of >31,500 (ISI) or >37,000 (Google scholar), and an h-index of 104 (ISI) and 113 (Google scholar). His main research interest is on designed synthesis of nanostructured materials for energy and environmental applications. In particular, he has strong interest on synthesis of hollow nanostructures for different applications, such as, lithium-ion batteries and supercapacitors. He also explores the applications of novel nanostructured materials for electrocatalysis and photocatalysis. He has received several important awards including the Young Scientist Award 2012 by National Academy of Science of Singapore. He also received the Nanyang Research Award 2012 by Nanyang Technological University. He was listed as a Highly Cited Researcher by Thomson Reuters in 2014 (in Materials Science) and 2015 (in both Materials Science & Chemistry) and 2016 (in Materials Science, Chemistry & Environment). He is currently an Associate Editor for Journal of Materials Chemistry A.