Tech Sheets SEVEN BERKELEY LAB ENERGY TECHS TO WATCH | Page 3

HIGH PERFORMANCE SiO ELECTRODES For Next Generation Lithium Ion Batteries BERKELEY LAB EXPERTISE NANOTECHNOLOGY ©Nanosys, Inc. BIOENGINEERING BATTERIES PAIN POINT Conventional graphite anode-based lithium ion batteries do not have the optimal specific capacity to meet growing consumer demand for high-performance smartphones and other devices or electric SEMICONDUCTORS vehicles. Silicon monoxide (SiO) materials have promise because of their high specific capacity, low volume expansion, and small initial specific surface area, but high loading SiO electrodes have been hampered by excessive volume change of the micron-size particles and consumption of lithium during the activation process. ENERGY EFFICIENCY Photo Courtesy of Nanosys, Inc. SOLUTION A low concentration of functional conductive polymer binder enhances the cycling stability of SiO electrodes and eliminates the need for conductive additives, increasing the loading of active HIGH PERFORMANCE COMPUTING materials and, subsequently, increasing battery energy density. The Berkeley Lab SiO electrode has capacity retention of over 90% after 500 cycles, translating into a 20% improvement over conventional lithium ion batteries. APPLICATIONS BATTERIES • Electric vehicles • Portable electronics ADVANTAGES LIFE SCIENCES • High energy density DEVELOPMENT STAGE Researcher publication in Journal of the American Chemical Society, 2015, 137 (7), 2656-2571. STATUS Patent pending. Available for licensing or collaborative research. For more details on this technology, go to http://ipo.lbl.gov/lbnl2014-048/ REFERENCE NUMBER 2014-048 CONTACT Shanshan Li, Technology Commercialization Associate [email protected] 510-486-5366 L AWR E NC E BE R KELEY N ATI O N A L LA B O RATORY • [email protected] All photos ©The Regents of the University of California through Lawrence Berkeley National Laboratory, except as noted. • Fast throughput process SENSORS/DETECTORS BIO-BASED FUELS & CHEMICALS IMAGING SOFTWARE SUBSURFACE