Conference Speakers

Prof. Dennis Y.C. Leung (Keynote Speaker)

Hong Kong University, Hong Kong












Keynote Lecture: New development in microfluidic and paper based Al-air batteries for portable devices

Abstract: Aluminum-air (Al-air) battery has been invented for more than 50 years, which is well-known for its high energy density and excellent power output. Nevertheless, the application of this technology is still restricted to large-systems with high cost due to its complexity, while its application in portable devices is barely reported. This is because of its requirement of high-purity Al anode and complex electrolyte management, which lead to poor market competitiveness and system redundancy. Inspired by the ever-growing research on paper-based power sources, novel paper-based Al-air battery has been developed to bring this conventional technology to the enormous miniwatt market. By using cellulose paper as electrolyte channel, the whole system can be greatly simplified without the need for bulky liquid storage or active electrolyte delivery. More importantly, the restricted electrolyte transport and ion diffusion inside the porous and tortuous paper enables the direct utilization of low-purity Al (<98%) in alkaline electrolyte with specific capacity reaching more than 1700 mAhg-1. The intrinsic flexibility and printability of paper can enable the fabrication of flexible and printable Al-air batteries, which are more lightweight and versatile. This novel design exhibits a great development potential for a much smarter and more economic battery application prospect for the emerging miniwatt market such as wearable electronics, point-of-care diagnostic assays, biosensors, smart packages, etc. In this talk conventional and the newly developed novel batteries for portable devices and sensors will be introduced.

Biography: Prof. Dennis Y.C. Leung received his BEng (1982) and PhD (1988) from the Department of Mechanical Engineering at the University of Hong Kong.  He had worked with the Hongkong Electric Co., Ltd. for five years heading the air pollution section of the company before joining the University of Hong Kong in 1993. Professor Leung is now a full professor and associate head of the Department of Mechanical Engineering specializing in environmental pollution control and renewable & clean energy development. He has published more than 450 articles in this area including 280+ peer reviewed top SCI journal papers.  His current h-index is 65 and total citations are more than 23000. He is one of the top 1% highly cited scientists in the world in energy field since 2010 (Essential Science Indicators) and named as a Highly Cited Researcher by Clarivate Analytics in 2017 and 2018.  Prof. Leung has delivered more than 60 keynote and invited lectures in many conferences. 
Prof. Leung is a chartered engineer, a fellow of the IMechE and Energy Institute. He was also the Past Chairman of the Institute of Energy (HK Branch), and currently serves as an editorial board member of a number of journals including Applied Energy, Energy Conversion and Management, Applied Sciences, and Associate Editor of Progress in Energy. Prof. Leung also serves as a board member of the Hong Kong Institution of Science, chairman and member of a few committees of the HKSAR government and government’s appeal board panels related to sustainable energy and environment.

Prof. Chan Siew Hwa (Keynote Speaker)

Nanyang Technologcal Uuniversity, Singapore










Keynote Lecture: Hydrogen Production Using Solid Oxide Electrolysis Cell

Abstract: Large quantities of hydrogen are needed in the petroleum and chemical industries. The largest application of hydrogen is in the processing of fossil fuels in oil refinery, and in the production of ammonia for fertilizer market. Traditionally, hydrogen is produced by steam methane reforming or SMR. However, unless the CO2 in SMR is captured effectively, otherwise the production of hydrogen cannot be considered as green. This talk will cover different types of electrolysis technologies, with special focus on solid oxide electrolysis cell. Due to its high operating temperatures, direct seawater electrolysis is possible and its electrical to chemical energy efficiency can be as high as 100% if not higher when waste heat recovery is available. The talk will also cover novel electrolysis technology where hydrogen and syngas are produced concurrently.  

Biography: Dr. Chan joined NTU as a Lecturer in 1991 after obtaining his PhD and subsequently working as a postdoctoral researcher at Imperial College London. He is now a Professor in the School of Mechanical and Aerospace Engineering. Prof. Chan is a Director of Maz Energy Pte Ltd, where he provides technical advices to the Board since 2004. He is also a Director of a new start-up Company, Xin Xiang (Guangzhou) Hydrogen Technologies, with a major business in manufacturing key components for PEMFC. He was a member of the Management Board of Energy Studies Institute (SGP); Advisor to Total SA (France), Horizon Energy Systems (SGP) and Wuhan Koleal (China). Prof. Chan’s research is inclined Fuel Cells and Hydrogen Technology. He was the Conference Chair of the 1st World Hydrogen Technologies Convention (WHTC) in 2005 and was also the Conference Chair of HYPOTHESIS XIII in 2018. His research has gained him a number of recognitions, such as George-Stephenson Medal from the Institution of Mechanical Engineers (UK), Scientific Achievement Award from International Association of Hydrogen Energy (USA), “The World’s Most Influential Scientific Minds 2014” (Thomson-Reuters), Nanyang Award (Research Excellence), Nanyang Award (Teaching Excellence), Nanyang Award (Innovation and Entrepreneurship), and lately “Star of Innovation Talent” from Guangzhou Government. He is also the President’s Chair in Energy, a Chair Professorship for one who contributes greatly in the field of Energy. He has received the National Day’s Medal from the President of Singapore in 2017 and 2018, respectively. He is the editorial board member of “Fuel Cells – from fundamentals to systems”, “Journal of Power Technologies”, “Energy Conversion and Management” and “International Journal of Energy Research”.