Asia-Pacific Conference on Engineering and Applied Sciences
August 25-27, 2015 in Osaka, Japan

- Keynote Lecture -

Kwun Nam Hui (K.N. Hui)

School of Materials Science and Engineering,
Pusan National University

Topic: Design of Carbon Materials for Energy Conversion and Storage
To effectively utilize renewable energy, energy conversion and storage devices such as fuel cells and supercapacitors (SCs) have attracted tremendous attention in recent years. Fuel cells has demonstrated as the upcoming alternative energy source due to its highest energy density among energy conversion and storage devices, while SCs has shown to be a promising energy storage device owing to the merits of high power density (>10 kW kg-1), long cycle life (>10 years), fast charging/discharging (within seconds), high reliability, and low maintenance cost. Fuel cell and SCs have been used in advanced applications, such as portable electronic devices, hybrid electric vehicles, integration with fuel cell and battery, and emergency doors on the Airbus A380. However, despite significant advances in electrode materials, practical applications of fuel cells are hindered by using expensive noble metals such as platinum (Pt), palladium (Pd), ruthenium (Ru) as electrocatalyst. For SCs, the current challenge is the low specific capacitance of carbon-based materials. More research is needed to improve the electrochemical performance of electrode materials in order to support the development of next generation of energy conversion and storage devices.

In this talk, the speaker presents his recent work in the development and applications of carbon/graphene materials for fuel cells and SCs. First, he describes how to use the three-dimensional architectures of graphene aerogel to enhance the oxygen reduction reaction in fuel cells. Second, he proposes effective methods of fabricating hierarchical porous carbon/graphene aerogel materials with surface functional group modification to achieve high specific capacitance.

Introduction of Lecturer

Dr. Kwun Nam HUI is an associate professor at the Department of Materials Science and Engineering of Pusan National University (PNU) in South Korea. He obtained his B.Sc. degree in Physics from the Hong Kong University of Science and Technology in 2003 and his M.Phil. and Ph.D. degrees in Electrical and Electronic Engineering from the University of Hong Kong in 2007 and 2009, respectively. He worked as a postdoctoral associate in 2009 at the Institute of Advanced Materials, Devices, and Nanotechnology, Rutgers, The State University of New Jersey. He contributed to the development of the ultrafast photonic crystal waveguide modulator for communication. He joined Pusan National University in the fall of 2009. Thus far, he has conducted research in different areas related to energy and the environment, including Li-ion battery, supercapacitor, and electrode materials for direct methanol/direct hydrogen peroxide fuel cell, hydrogen production by methanol steam reforming, solid-state lighting, desiccant cooling, removal of volatile organic compounds in air, and wastewater treatment. His major contributions include the use of fluorescent nanospheres for proprietary white-light LEDs, design and implementation of proprietary vertically stacked polychromatic LED structure for color-tunable LEDs, first report of UV-stimulated emission from pivoted GaN-on Si microcavities, first demonstration of UV lasing of GaN nanopillar structure at room temperature, first demonstration of synergetic effects of MnO2/graphene composite to improve catalytic ozonation of gaseous toluene, development of reusable catalyst chip for wastewater treatment, green method for synthesizing graphene, metal (oxide)/graphene composite for fuel cell applications, and production of hierarchical N-doped porous carbon from biowastes as electrode materials for supercapacitors. As principal investigator, he has managed 12 research projects with a total research grant of USD 0.5 million. His research has led to one US patent, eleven Korea patents, four review papers, three book chapters, >90 peer-reviewed SCI journal papers, and >50 conference papers. He has served as lead guest editor/guest editor/member of the editorial board of a number of journals, such as Frontier, Reviews in Advanced Sciences and Engineering, Journal of Nanomaterials, Current Nanoscience, The Scientific World Journal, and Scientific Journals International. He was in the organizing committee of the 4th Conference on New Energy and Sustainable Development. His current research focuses on synthesis of hierarchical carbon/graphene materials as well as on the development of 3D hierarchical layered double hydroxide materials as advanced electrode materials for energy storage and conversion applications.
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