Not Just Graphene - the Wonderful World of Carbon (and related) Nanomaterials
Wednesday, November 5, 2014
11:30 am - 1:30 pm
125 Hudson Hall
Prof. Yury Gogotsi
Department of Materials Science and Engineering and A.J. Drexel Nanomaterials Institute
Drexel University, Philadelphia, PA 19104, USA
Carbon, with its variety of allotropes and forms, is the most versatile material and virtually any combination of mechanical, optical, electrical or chemical properties can be achieved by controlling its structure and surface chemistry. While graphite, carbon fibers, glassy carbon, activated carbons, carbon black, and diamond are widely used nowadays, fullerenes (also polymerized, endohedral and exohedral fullerides), carbon onions (multi-shell fullerenes), nanotubes (dozens of varieties), whiskers, nanofibers, cones, nanohorns, nanodiamonds and other nanoscale carbons have been attracting much attention in the past 20-30 years. Graphene is the latest example and is the most widely researched one now. There are already thousands of carbon nanomaterials to choose from. And we need different materials to meet a variety of performance requirements. It will be shown on an example of supercapacitor electrodes that 0D and 1D nanoparticles, such as onions and nanotubes, deliver very high power due to fast ion sorption/desorption on their outer surfaces. 2D graphene offers higher charge-discharge rates compared to porous carbons and high volumetric energy density. 3D porous activated, carbide-derived and templated carbon networks, having a high surface area and porosity in the Ångrtöms or nanometers range, can provide high energy density if the pore size is matched with the electrolyte ion size. Finally, carbon-based nanostructures further expand the range of available to us nanomaterials - recently discovered 2D transition metal carbides (MXenes) have already grown into a family with a dozen of members in less than 3 year and they can challenge graphene in some applications.
Dr. Yury Gogotsi is Distinguished University Professor and Trustee Chair in the Department of Materials Science and Engineering at Drexel University. He also holds courtesy appointments in the Departments of Chemistry and Mechanical Engineering and Mechanics at Drexel University, and serves as Director of the A.J. Drexel Nanomaterial Institute. He served as Associate Dean of the College of Engineering from 2003 to 2007. He received his M.S. (1984) and Ph.D. (1986) degrees from Kiev Polytechnic and a D.Sc. degree from the Ukrainian Academy of Science in 1995, as well Dr.h.c. from Paul Sabatier University, Toulouse, France, in 2014. He has co-authored 2 books, edited 13 books, obtained more than 50 patents and authored more than 400 peer-reviewed papers, being listed as a Highly Cited Researcher by Thomson-Reuters in 2014. His research has been recognized with a Kavli Distinguished Lectureship (MRS), Chang Jiang Scholar Award, European Carbon Association Award, S. Somiya Award from the International Union of Materials Research Societies, G.C. Kuczynski Prize from the International Institute for the Science of Sintering, Purdy Award and Roland Snow Award from the American Ceramic Society, NANOSMAT Prize, I.N. Frantsevich Prize from the Ukrainian Academy of Science, R&D 100 Award from R&D Magazine (twice) and two Nano 50TM Awards from NASA Nanotech Briefs. He has been elected a Fellow of the AAAS, Materials Research Society, American Ceramic Society, The Electrochemical Society, as well as Academician of the World Academy of Ceramics and Full Member of the International Institute for the Science of Sintering. He is currently serving as Associate Editor of ACS Nano.