TRS Project Workshop for Energy Storage 2017

Keynote Speech:

"Metal-organic-framework-derived functional nanomaterials for electrochemical energy storage and conversion"

Xiong Wen (David) Lou
School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
Email: xwlou@ntu.edu.sg

Abstract:

We use metal-organic frameworks (MOFs) as a unique platform to synthesize nanostructured functional materials with both controlled composition and structure. Due to the atomically arranged metal ions and organic ligands, as well as the wide variety of compositions and porous structures, MOFs can serve as unique precursors for easy preparation of metal-based materials, carbonaceous materials and nanocomposites with high porosity and tunable composition/structure. In this talk, I will briefly discuss some recent progress we have made in this area. Specifically, I will mention some examples of designed synthesis of nanostructured metal oxides, sulfides, nitrides, phosphides and carbides using MOF precursors. As a subclass of MOFs, zeolitic imidazolate frameworks (ZIFs) are used as a platform to construct N-doped carbon nanotube frameworks, Co₃O₄/NiCo₂O₄ double-shelled nanocages, and carbon-incorporated Ni-Co mixed metal phosphide nanoboxes. It is also possible to incorporate functional species into the MOF precursors. For example, starting from NENU-5 nano-octahedrons with in situ embedded Mo-POMs, mesoporous molybdenum carbide nano-octahedrons composed of ultrafine nanocrystallites are successfully prepared. All of these MOF-derived nanomaterials could retain the well-defined morphology of the initial MOFs and exhibit interesting electrochemical properties in batteries and electrocatalysts. Our studies provide some guidelines for the design and synthesis of nanostructured with enhanced electrochemical properties.

References:

1.  H. B. Wu, B. Y. Xia, L. Yu, X. Y. Yu, X. W. Lou,* Nat. Commun., 2015, 6, 6512

2.  H. Hu, B. Y. Guan, B. Y. Xia, X. W. Lou,* J. Am. Chem. Soc., 2015, 137, 5590 – 5595

3.   L. Han, X. Y. Yu, X. W. Lou,* Adv. Mater. 2016, 28, 4601 - 4605 

4.  B. Y. Xia, Y. Yan, N. Li, H. B. Wu, X. W. Lou,* X. Wang,* Nature Energy, 2016, 1, 15006

5.  P. L. He, X. Y. Yu, X. W. Lou,* Angew. Chem. Int. Ed. 2017, 56, 3897 - 3900.

Biography

Dr. David Lou received his B.Eng. (1^st 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 265 papers with a total citation of >39,500 (ISI) or >45,000 (Google scholar), and an h-index of ~119 (ISI) and ~125 (Google scholar) as of September 2017. Among which, about 128 papers are ESI highly cited papers.

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), 2015 (in both Materials Science & Chemistry) and 2016 (in Materials Science, Chemistry & Environment).  He is currently an Associate Editor for Science Advances.