题目：Electrochemical Routes to Fabricate Materials for Energy: High-Performance Li-ion Batteries, and Micro-Optics for Displays and Solar Energy
报告人：Prof. Paul V. Braun, Director of MRL, University of Illinois at Urbana-Champaign
摘要：New synthetic routes often provide opportunities for innovation. Recently we have made considerable advances in the electrodeposition of high performance Li-ion anode and cathode materials both as solid films, and on 3D mesostructured templates. The capacities are often near-theoretical, and in some cases the materials also exhibit high rate performance. The electrodeposition method significantly broadens the scope of battery form factors and functionalities, enabling a variety of highly desirable battery properties including microbatteries, and high energy, high power, and flexible designs. Also using electrochemistry, both 3D gradient refractive index optics and 3D photonic crystals were formed For example, via electrochemical etching of silicon, followed by materials conversion, 3D gradient refractive index micro-optics, were formed. Elements including flat lenses, Bragg mirrors, polarization sensitive optical splitters and structures with nearly arbitrary refractive index distributions were formed with a particular focus on micro-optics important for solar energy harvesting and flat panel displays.
报告人简介：Paul V. Braun is the Director of the Frederick Seitz Materials Research Laboratory (MRL), the Ivan Racheff Professor of Materials Science and Engineering, and a Professor in Chemistry. Prof. Braun’s research focuses on the synthesis and properties of 3D architectures with a focus on materials with unique optical, electrochemical, thermal, and mechanical properties. Prof. Braun received his B.S. degree with distinction from Cornell University in 1993, and his Ph.D. in Materials Science and Engineering from Illinois in 1998. Following a postdoctoral appointment at Bell Labs, Lucent Technologies, he joined the faculty at Illinois in 1999. Prof. Braun has co-authored a book, authored over 200 peer-reviewed publications, been awarded multiple patents, and has co-founded two companies. He is the recipient of the Young Alumnus Award (2011), the Friedrich Wilhelm Bessel Research Award (2010), the Stanley H. Pierce Faculty Award (2010), Beckman Young Investigator Award (2001), a 3M Nontenured Faculty Award, the 2002 Robert Lansing Hardy Award from TMS, the Xerox Award for Faculty Research (2004, 2009), and multiple teaching awards. In 2006, he was named a University Scholar by the University of Illinois, and in 2011 was named the Ivan Racheff Professor of Materials Science and Engineering.