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ADVANCE Seminar: Esther Takeuchi, "Longer Life Medical Batteries"
Thursday, February 20, 2014
11:00 a.m.
2108 Chem/Nuclear Engineering Bldg.
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ADVANCE Seminar Series
Toward the Bionic Human: New Cathode Materials for Longer Life Medical Batteries

Esther S. Takeuchi
SUNY Distinguished Professor
Materials Science and Engineering and Chemistry Depts.
Stony Brook University and Brookhaven National Laboratory
Member, National Academy of Engineering

Abstract
Batteries for implantable cardiac defibrillators (ICDs) are based on the Lithium/Silver vanadium oxide (SVO, Ag2V4O11) system. This system was first implanted in 1987 and over 20 years later remains the dominant system used in human implants. Hundreds of thousands of lives have been saved due to ICDs powered by Li/SVO batteries. A case study highlighting the rich chemistry and electrochemistry of the Li/SVO system providing battery characteristics favorable to the ICD application will be discussed including strategies critical to successful commercialization. We are currently investigating next generation materials with a general composition of MM’POx for possible application in biomedical batteries. Specifically, the first material under study is Ag2VO2PO4. Changes in the composition and structure of Ag2VO2PO4 with reduction, including the insitu formation of silver nanoparticles, are detailed to rationalize a 15,000 fold increase in conductivity with initial discharge. Additionally, mechanisms extending battery life are associated with Ag2VO2PO4 cathodes.

Biography
Esther S. Takeuchi is a material scientist and chemical engineer, working on energy storage systems and power sources for biomedical devices. She is also a member of the National Academy of Engineering, a Distinguished Professor at Stony Brook University and a Chief Scientist at Brookhaven National Laboratory. She holds more than 150 USpatents, the largest number for any woman in the United States. Takeuchi graduated from the Univ. Penn. in 1975 having majored in Chemistry and History. She then worked on her PhD in Organic Chemistry at the Ohio State Univ. until 1981. After completing postdoctoral training in electrochemistry, she worked at Greatbatch Inc. in Clarence NY for 22 years. It was here, under the funding of Wilson Greatbatch, that Takeuchi developed the Li/SVO battery. In 2007, she joined academia at the University of Buffalo as the Greatbatch Professor of Advanced Power Sources. She is currently a Distinguished Professor at Stony Brook University in the departments of Chemistry, and Material Science and Engineering. She was selected as the 2013 recipient of the E.V. Murphree Award in Industrial and Engineering Chemistry awarded by the American Chemical Society.

This Event is For: Graduate • Undergraduate • Faculty • Post-Docs • Alumni • Corporate

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