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Bingqing Wei

Bingqing Wei

University of Delaware, USA

Title: Stretchable energy storage systems enabled by engineering nanostructured carbon


Bingqing Wei is currently a Full Professor in the Department of Mechanical Engineering at the University of Delaware. He was an Assistant Professor in the Department of Electrical and Computer Engineering and Center for Computation and Technology at Louisiana State University from 2003 to 2007. He had worked as a Research Scientist at Rensselaer Polytechnic Institute, Department of Materials Science and Engineering and Rensselaer Nanotechnology Center from 2000 to 2003. He was a Visiting Scientist for Max-Planck Institut für Metallforschung, Stuttgart, Germany in 1998 and 1999. From 1992 to 2001, he was a Faculty Member at Tsinghua University in Beijing, where he received his Bachelor’s degree (1987), MS (1989), and PhD (1992) in Mechanical Engineering. He is a Member of The Materials Research Society (MRS), The Electrochemical Society (ECS), The American Chemical Society (ACS), and The American Society of Mechanical Engineering (ASME).


Renewable energy sources such as solar energy and wind power are intermittent in nature, reliable electrochemical energy storage systems, mainly including rechargeable batteries and electrochemical capacitors (supercapacitors), are purposely explored to promote efficient utilization of these energy sources and are a growing challenge. In the meantime, flexible/stretchable electronics have attracted considerable attention very recent years and have opened the door to many important applications that current, rigid electronics cannot achieve. In order to accommodate these needs, energy source devices must be flexible and stretchable in addition to their high energy and power density, light weight, miniaturization in size and safety requirements. The development of stretchable energy storage devices has been one of the most important research areas in recent years and relies mostly on the successful fabrication of electrode materials. Utilizing nanomaterials and nanostructures such as carbon nanotubes (CNTs) for various energy storage applications such as electrodes for lithium ion batteries and supercapacitors and as catalyst supports in fuel cells are under scrutiny because of their improved electrochemical activity, cost effectiveness, environmental benign nature, and promising electrochemical performance. In this presentation, I will report our research efforts in the fabrication of stretchable supercapacitors based on CNT macrofilms, including stretchable double layer supercapacitors, pseudocapacitors, and asymmetric supercapacitors that can stably be operated under both static and dynamic modes.