Dr. Christine Ho
Postdoctoral Researcher, UCB Center for Entrepreneurship and Technology
September 28, 2010 | 12:30 to 01:30 | 540 Cory Hall, DOP Center Conference Room
Host: John Huggins
As electronic devices become smaller in volume and more specialized in functionality, a paradigm shift in energy storage design and manufacture is beginning to emerge and can be realized with the development of simple, low-cost, solutions-based processing methods to incorporate custom energy buffers directly onto a device. I will discuss the motivations and implications of this paradigm shift and how this affects the rules for comprehensive device design especially for miniature (< 1 cm^3), low power applications. For more than five years, I have been part of a research effort developing the materials and direct write fabrication methods for printing carbon based electrochemical capacitors and zinc batteries directly onto a substrate. Our materials investigations include the optimization of mechanical and ionic transport properties of ionic liquid gel electrolytes, and this has enabled the fabrication of completely printable "solid-state" capacitors and batteries, mitigating manufacturing and packaging concerns. Through a pneumatic dispenser printing system, the energy storage devices can be patterned and integrated directly on-chip. Comprehensive device characterization, including long-term cycling performance and rate behavior will also be presented.
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