Transforming Energy Lectures


Tuesday, January 10, 2017, 10AM
1202 Martin Hall
Dr. Yuki Katoh

Senior Manager and Scientist, Toyota
“Sulfate-based Solid-State Batteries”

Large-scale batteries are in high demand for applications such as plug-in electric hybrid or electric vehicles, and smart electric power grids. The all-solid-state battery is the most promising candidate for future battery systems, due to the high energy density obtaining by direct-series-stacking of the battery cells.  However, the poor electrochemical characteristics of the all-solid-state battery, due to higher cell-resistivity than conventional liquid electrolyte batteries, still remain as an unsolved issue. We will demonstrate an all-solid-state battery with extremely high power performance that employs the superionic conductors having the Li10GeP2S12-type crystal structure. The battery can operate over a wide temperature range with extremely high current drains of 3 mAcm-2 (−30 ºC), 100 mAcm-2 (25 ºC), and 1000 mAcm-2 (100 ºC).  Careful electrochemical examination of the all-solid-state battery with the same battery configuration as a liquid electrolyte system revealed that the rate characteristics are simply dependent on the difference in state of electrolyte. The vert high power characteristics of solid state battery comes from intrinsic ion transportation mechanism of solid electrolyte.

more information here


The Energy Research Center sponsors the Transforming Energy Lecture Series to facilitate a broad discussion on the engineering challenges of developing breakthrough energy technology for a sustainable future.  In partnership with the Clark School of Engineering, UMERC hosts leading thinkers and technologists from academia, industry, and government.  These lectures provide viewpoints on energy challenges and discuss exciting new scientific and engineering breakthroughs that may impact the future development of a sustainable energy infrastructure for our nation. The lectures, held once per monthl on the University of Maryland campus, are open to all interested parties in the D.C. area.

The nation's security and economic health are dependent upon access to stable, secure sources of affordable energy. Increasing global demand for energy and the looming peak in global production of readily accessible fossil fuels (other than coal) present the greatest of engineering challenges — to develop a future sustainable energy infrastructure. For our nation, the development of breakthrough energy technologies provides the best hope for achieving both a sustainable energy infrastructure and increased independence from foreign fuel sources. Investments in energy science and engineering will be critical for establishing sustainable domestic fuel supplies and improved efficiency for environmentally-friendly energy conversion devices while sustaining our economic health. Such "solutions" to the energy crisis will almost certainly require implementation of multiple emerging technologies (e.g. biomass, solar technology, advanced nuclear reactors, fuel cells, etc.) that will impact specific energy sectors in different ways.

Past Speakers - link

All are welcome to attend the Transforming Energy Lectures, no RSVP is required.  Please email or call 301-405-4799 with your questions.  Directions to campus can be found here, use the University of Maryland's TerpNav interactive map to find your way to the lecture buildings.