51福利

Engineered Electrodes for Safer Rechargeable Batteries

August 11, 2017
ME Lecture Hall
1300

Dr. Vilas Pol

Associate Professor of Chemical Engineering, Purdue University

Abstract

ViPER (Vilas Pol鈥檚 Energy Research) laboratory at Purdue University focuses efforts on the development of high capacity electrode materials and their engineering with long cycle life and improved safety. Considering the advantages and limitations of known synthesis techniques, a solvent-less, single step ViP processing technology has been developed to fabricate a variety of unique anode and cathode materials for lithium-ion, Na-ion, K-ion and Li-S batteries. The technique has particular merit for producing carbon cavities and metal-carbon composites from inexpensive starch-based precursors. This presentation will reveal selective results on the novel synthesis of 3-dimensional carbon hotels that accommodate electrochemically active, high capacity Sn, Co or Si based nanoguests. Around 300% expansion and contraction during lithiation and delithiation of Co and Si anodes is eff卢ectively accommodated in the rooms of conducting carbon hotels minimizing pulverization e-ffects. With the addition of electrolyte additives in Gen 2 electrolytes, high capacity and longer cycle life from these newly developed 3D electrodes are achieved. These carbon hotel rooms are also used to accommodate in-situ formed nanosulfur guest as a cathode of Li-S batteries in the presence of fluorinated ether-based electrolytes, achieving longer cycle life with higher capacities. ViPER鈥檚 recent eff卢orts on structural, morphological and electrochemical properties of various electro-chemistries will be demonstrated.

Biography

Dr. Vilas Pol is an Associate Professor at Purdue University鈥檚 School of Chemical Engineering, USA. He earned his B. Sc.,M.Sc., and M. Phil. degrees from Pune University, India, and later earned his Ph. D. from Bar-Ilan University of Israel. Before joining Purdue University, he was a materials scientist in the Chemical Sciences and Engineering Department at the Department of Energy鈥檚 Argonne National Laboratory, IL. Dr. Pol has 17 years of research experience in the fields of energy storage, materials chemistry, engineering and electrochemistry. He developed numerous synthetic approaches for the fabrication of various functional electrode materials, including anodes and cathodes of Li-ion batteries, K-ion, Na-ion and Li-S batteries. Dr. Pol鈥檚 scientific breakthroughs have been featured in various media outlets including New Scientist, Discovery, Popular Science, Smithsonian, USA Today, Forbes, ACS, MRS, DOE webpages, ABC7 news, Asia TV, Univision, and NOVA鈥檚 鈥渕aking stuff cleaner鈥� program. He has authored or co-authored more than 125 research publications (h index36), four book-chapters, and the associated inventor on 15 US patents/applications. Other achievements include an ACS Grand Prize winner, the Argonne National Laboratory鈥檚 distinguished 鈥楧irectors postdoctoral fellowship鈥� awardee, the MRS Science as Art first prize winner, Intel prize, Argonne鈥檚 Near Hit Safety award, 2013 British Carbon Society鈥檚 Brian Kelly award, and a 鈥楪old Medalist鈥� in Sports. In 2015, his sustainable 鈥榁ersatile Hard Carbon Microspheres Made from Plastic Waste鈥� technology was selected as one of the 100 most technologically significant new products of the year. In 2016, he received the American Institute of Chemical Engineer鈥檚 Sustainable Engineering Forum Research Award. Dr. Pol鈥檚 鈥楿p Carbon鈥� technology developed at Purdue University was a finalist for the 2016 鈥淩 and D 100 award鈥�.

POC

Dr. Daniel A. Nussbaum
51福利 
Principal, Energy Academic Group
Monterey CA 93943
Phone: 831-656-2387
Mobile: 831-324-3228
Email: dnussbaum@nps.edu