cfaed Seminar Series
cfaed Seminar Series
Prof. Hui-Ming Cheng, Prof. Shi-Zhang Qiao , Chinese Academy of Sciences, China, University of Adelaide, Australia
Minisymposium on Graphene Materials
, 15:00 - 17:00
TU Dresden, New Chemistry Building, Lecture Theatre CHE S89 , Bergstraße 66 , 01069 Dresden
Beginning at 3 p.m. Prof Hui-Ming Cheng is going to give a talk titled “Graphene Materials: Large-Scale Fabrication and Application Explorations”
Graphene has unique properties and is expected for various applications. There are challenges of how to realize large-scale fabrication of high-quality graphene materials and large-size single crystal graphene domains, which are essential for mass and device applications. In order to commercialize graphene materials, we developed a solid state intercalation-high temperature expansion-liquid phase exfoliation process. With a proto-type production line, 5 kg/day graphene material with high quality can be produced, which will have wide applications in composites, energy storage, conductive inks, etc. Second, we developed an ambient pressure CVD to synthesize millimeter-size single crystal graphene grains and films on Pt substrates, and invented an electrochemical bubbling method to transfer these grains and films, which is nondestructive to the Pt substrates that can be repeatedly used for graphene growth with no limit. The single crystal graphene grains have high crystallinity and high electrical mobility. The kinetics and edge control of the graphene grains were elucidated. In order to obtain graphene by CVD in a relatively large quantity, we tried to use Ni particles and Ni foams as substrates. With Ni foam as template, a 3D graphene macrostructure, which is called graphene foam (GF), can be synthesized. This porous graphene bulk material consists of an interconnected network of graphene, is flexible, and has outstanding electrical and mechanical properties. And it can be used in elastic conductors, sensors, flexible lithium ion batteries, Li-S batteries, and electromagnetic interference fielding materials.
Hui-Ming Cheng received his B. in Carbon Materials from Hunan University, China in 1984, and his M.Sc in Inorganic Non-metallic Materials and Ph.D in Metallic Materials from the Institute of Metal Research, Chinese Academy of Sciences (IMR CAS) in 1987 and 1992, respectively. He studied at Kyushu National Industrial Research Institute, AIST of Japan from 1990 to 1992, and worked at Nagasaki University in Japan from 1992 to 1993, and MIT, USA from 1997 to 1998. In 1993, he joined IMR and now is Professor and Director of Advanced Carbon Materials Division of Shenyang National Laboratory for Materials Science, IMR CAS.
His main scientific interests are concerned with fabrication and applications of carbon nanotubes, graphene, energy storage materials, photocatalytic semiconducting materials, and high-performance bulk carbon materials. He edited the first book on carbon nanotubes in Chinese, published over 450 scientific articles with a H-factor of 81, and is recognized as one of the Highly Cited Researchers in both chemistry and materials science fields by Thomson Reuters. He has received several international and national awards, including National Natural Science Award (2nd class) in 2006, the Charles E. Pettinos Award from American Carbon Society, USA in 2010, and the Prize for Scientific and Technological Progress of Ho Leung Ho Lee Foundation in 2010. He was the Editor of Carbon from 2000 to 2015 and the Editor-in-Chief of New Carbon Materials from 1998 to 2015, and is now Editor-in-Chief of Energy Storage Materials and Associate Editor of Science China Materials. He was the co-chairman of the World Conference on Carbon in 2002 (Beijing) and 2011 (Shanghai), has served as a member of organizing or scientific advisory committee of many conferences, and has given more than 80 plenary/keynote/invited talks in international conferences and symposia. He is an honorary or guest professor of a few domestic and foreign universities, and is a member of CAS and a fellow of the World Academy of Sciences (TWAS) for the advancement of science in developing countries.
Beginning at 4 p.m., Prof.Prof. Shi-Zhang Qiao is going to give a talk titled “Metal-free and Non-precious Metal Materials for Energy-relevant Electrocatalytic Processes”.
Replacement of precious metal catalysts by commercially available alternatives is of great importance among both fundamental and practical catalysis research. Nanostructured carbon-based and transition metal materials have demonstrated promising catalytic properties in a wide range of energy generation/storage applications. Specifically engineering graphene/porous carbon with guest metals/metal-free atoms can improve its catalytic activity for electrochemical oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), thus can be considered as potential substitutes for the expensive Pt/C or IrO2 catalysts in fuel cells, metal-air batteries and water splitting process. In this presentation, I will talk about the synthesis of nonprecious metal and metal free elements-doped graphene/porous carbon, and their application on electrocatalysis. The excellent ORR, OER and HER performance (high catalytic activity and efficiency) and reliable stability (much better than the commercial Pt/C or IrO2) indicate that new materials are promising highly efficient electrocatalysts for clean energy conversion.
Prof. Shi-Zhang Qiao received his PhD degree in chemical engineering from Hong Kong University of Science and Technology in 2000, and is currently a professor (Chair of Nanotechnology) at School of Chemical Engineering of the University of Adelaide, and an Honorary Professor at The University of Queensland, Australia. His research expertise is in nanomaterials and nanoporous materials for drug/gene delivery and new energy technologies. He has co-authored more than 220 papers in refereed journals (over 12000 citations with h-index 56), including Nature, Nature Communications, J. Am. Chem. Soc, Angew. Chem., Adv. Mater., and has filed several patents on novel nanomaterials that are promising for drug/gene delivery, fuel cells, photocatalysis and lithium ion battery.
Prof. Qiao was honoured with a prestigious ARC Discovery Outstanding Researcher Award (DORA, 2013), an Emerging Researcher Award (2013, ENFL Division of the American Chemical Society) and a UQ Foundation Research Excellence Award (2008). He has also been awarded an ARC ARF Fellowship, an ARC APD Fellowship and an inaugural UQ Mid-Career Research Fellowship. Professor Qiao is currently an Associate Editor of Journal of Materials Chemistry A.