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Olt Emil Geiculescu

Olt Emil GeiculescuLecturer
General Chemistry

Phone: (864) 656-5021
Office: 271 Hunter Laboratories
E-mail: oltg@clemson.edu

 

Dr. Geiculescu graduated from “Politehnica” University of Bucharest with a B.S./M.S. degree in Industrial Chemical Technology, field Organic Chemistry, then later on earned a M.S. in Chemical Engineering from Clemson University, a Ph.D. in Chemical Engineering from “Politehnica” University of Bucharest under Prof. Floarea Octavian, and a Ph.D. in Chemistry, from Clemson University in 2004 under Prof. Stephen Creager.

Worked first as a process chemical engineer at the Petrochemical Plant Brazi, Ploiesti, Romania, for several years where he supervised and improved the implementation of Methanol-to-Gasoline (MTG) and Methanol-to-Olefins (MTO) technologies for synthetic fuels preparation in a pilot-scale plant, which resulted in the successful completion of several research reports for synthetic fuels synthesis.

After that, for 8 years as a scientist at the Chemical and Biochemical Energetics Institute (IECB), later ZECASIN S.A., Bucharest, Romania, he studied the thermodynamics and kinetics of Fischer-Tropsch (FT) processes using inferior coal (lignite) or biomass as raw materials to produce liquid hydrocarbons rich in a-olefins or gasoline or BTX. Also, he supervised the design and experimentation of the lab-scale installation for the above processes and organized and participated to the development of two pilot-scale plants using FT processes.

At Clemson Olt Geiculescu spent several years of postdoc with Prof. D.D. DesMarteau and Prof. S.E. Creager continuing the work on novel lithium sulfonimide salts-based electrolytes (solid polymer electrolytes, ionic melts and ionic liquids) for rechargeable lithium-ion batteries for hybrid/electrical vehicles that started in his graduate years. In 2009 started a 2-year collaboration with General Motors on novel partially fluorinated electrolytes (vitreous binary eutectics) and fluorinated additives (lithium fluorinated ester borates) which translated into two patent applications awarded. Also, he consulted for Michelin and Whirlpool.

As an adjunct professor he began teaching early on some seminars, labs and projects of transport phenomena at “Politehnica” University of Bucharest, and later some seminars of organic chemistry at “Dimitrie Cantemir” University.  He joined the General Chemistry group in the Fall of 2012.

The scientific activity translates into 21 journal publications, 90 oral communications and posters at engineering conferences and scientific meetings, one book chapter (Chapter 10 in “Fluorinated Materials for Energy Conversion”, eds. T. Nakajima and H. Groult, 2005) and 7 awarded patents.

Publications:

"Novel binary deep eutectic electrolytes for rechargeable Li-ion batteries based on mixtures of alkyl sulfonamides and lithium perfluoroalkylsulfonimide salts", O.E. Geiculescu, D.D. DesMarteau, S.E. Creager, O. Haik, D. Hirshberg, Y. Shilina, E. Zinigrad, M.D. Levi, D. Aurbach, I.C. Halalay, Journal of Power Sources 307, (2016): 519-525

"Solid Polymer Electrolytes from Lithium (Perfluorovinylether) Sulfonate - Derived Salts Dissolved in High-Molecular-Weight Poly(ethylene oxide)", Olt E.Geiculescu, Milena Stanga, Walter Navarrini, Stephen E. Creager, Darryl D. DesMarteau, Journal of Fluorine Chemistry 183, (2016): 14-22

“A Lithium Ion Battery Electrolyte Including a Vitreous Eutectic Mixture”, Ion C. Halalay, Damon R. Frisch, Olt E. Geiculescu, Darryl D. Desmarteau, Stephen E. Creager, Changqing Lu, US Patent 8,802,301 B2 August 12, 2014

“The Effect of Low Molecular Weight Polyethers as Plasticizers on the Transport Properties and Rheology of Fluorosulfonimide Ionic Melts”, O.E. Geiculescu, B.B. Hallac, R.V. Rajagopal, S.E. Creager, D.D. DesMarteau, O. Borodin, G.D. Smith, Journal of Physical Chemistry B 118, (2014):5135-5143

“Lithium salts of fluorinated borate esters for lithium-ion batteries”, Olt E. Geiculescu, Ion C. Halalay, Darryl D. Desmarteau, Stephen E. Creager, US Patent 8,394,539 B2 March 12, 2013

“Mesoporous Carbon/Zirconia Composites: A Potential Route to Chemically-Functionalized Ellectrically-Conductive Mesoporous Materials”, Jung-Min Oh, Amar Kumbhar, Olt Geiculescu, Stephen Creager, Langmuir 28 (6/2012): 3259-3270

“Ionomer Binders can Improve Discharge Rate Capability in Lthium-Ion Battery Cathodes”, Jung-Min Oh, Olt Geiculescu, Darryl DesMarteau, Stephen Creager, Journal of The Electrochemical Society 158 (2/2011): 1-8

“Er-doped Y2O3 Nanoparticles: A Comparison of Different Synthesis Methods”, Basak Yazgan Kokuoz, Karn Serivalsatit, Baris Kokuoz, Olt Geiculescu, Exley McCormick, John Ballato, Journal of the American Ceramic Society 92 (10/2009): 2247-2253

“Polyether-Based Arylfluorosulfonimides as Lithium Battery Electrolytes”, M. Herat, O.E. Geiculescu, R.V. Rajagopal, S.E. Creager, D.D. DesMarteau, Electrochimica Acta 54 (2009): 5877-5883

“Solid Polymer Electrolytes from cross-linked PEG and Dilithium Bis[(perfluoroalkyl)sulfonyl]diimide salts”, O.E. Geiculescu, R.V. Rajagopal, E.C. Mladin, S.E. Creager, D.D. DesMarteau, Collection of Czechoslovak Chemical Communications 73 (12/2008): 1777-1798

PEGME-based Zwitterionic RTILs Functionalized with Imidazole-modified Lithium Fluorosulfonate/Fluorosulfonimide Pendants”, O.E. Geiculescu, R.V. Rajagopal, Jung Min Oh, S.E. Creager and D.D. DesMarteau, PMSE preprints, vol. 99, 775-776, 236th ACS Proceedings, Philadelphia August 2008

“Lithium-conducting Ionic Melt Electrolytes from Polyether-functionalized Fluorosulfonimide Anions”, B.H. Hallac, O.E. Geiculescu, R.V. Rajagopal, S.E. Creager, D.D. DesMarteau, Electrochimica Acta 53 (20/2008): 5985-5991

“Lithium-conducting ionic melt electrolytes from polyether-functionalized fluorosulfonimide anions”, S.E. Creager, P. Hallac, O.E. Geiculescu, R.V. Rajagopal, D.D. DesMarteau, ECS Transactions  (2007),  3(27), Lithium-Ion Batteries, 69-73

“Ionic melt electrolytes for lithium battery applications”, S.E. Creager, P. Hallac, O.E. Geiculescu, R.V. Rajagopal, M. Herath, D.D. Marteau, ECS Transactions  (2007), 3(35),  181-185

“Ionic Melt Electrolytes Based on Oligomeric PEG Functionalized with Lithium Fluorosulfonates or Fluorosulfonimide Pendants”, B.H. Hallac, O.E. Geiculescu, R.V. Rajagopal, C. Topping, S.E. Creager, D.D. DesMarteau, Chimica Oggi / Chemistry Today 25 (3/2007): 36-40

 “Li+ Transport in Lithium Sulfonylimide-Oligo(ethylene oxide) Ionic Liquids and Oligo(ethylene oxide) Doped with LiTFSI”, O. Borodin, G.D. Smith, O.E. Geiculescu, S.E. Creager, B. Hallac, D.D. DesMarteau, Journal of Physical Chemistry B 110 (47/2006): 24266-24274

“Transport Properties of Solid Polymer Electrolytes Prepared from Oligomeric Fluorosulfonimide Lithium Salts Dissolved in High-Molecular-Weight Polyethylene Oxide”, O.E. Geiculescu, R.V. Rajagopal, S.E. Creager, D.D. DesMarteau, X. Zhang, P. Fedkiw, Journal of Physical Chemistry B 110 (46/2006): 23130-23135

Fluorinated Electrolytes Based on Lithium Salts of Strong Brønsted Acids”, Olt E. Geiculescu, Stephen E. Creager, Darryl D. DesMarteau (Chapter 10 in “Fluorinated Materials for Energy Conversion”, eds. T. Nakajima and H. Groult, 592 pages, Elsevier Science Ltd., ISBN: 0-08-044472-5, 2005)

“Solid Polymer Electrolytes from New Lithium Polyanionic Salts Based on LiTFSI Motifs”, O. E. Geiculescu, Jin Yang, Shuang Zhou, G. Shafer, W. T. Pennington, S. E. Creager, D. D. DesMarteau, Journal of The Electrochemical Society 151 (9/2004): A1363-A1368

Dilithium Bis[(perfluoroalkyl)sulfonyl]diimide Salts as Electrolytes for Rechargeable Lithium Batteries”, O.E.Geiculescu, Yuan Xie, R. Rajagopal, S. E. Creager, D.D. DesMarteau, Journal of Fluorine Chemistry, 125 (8/2004): 1179-1185

“Salt Diffusion in Solid Polymer Electrolytes Prepared Using Oligomeric Lithium Bis[(perfluoroalkyl)sulfonyl]imide  Salts in Polyether Hosts”, O.E. Geiculescu, Shuang Zhou, S. E. Creager, D.D. DesMarteau, Proceedings – Electrochemical Society of the 204th Meeting of ECS, Orlando, FL, October 12-16, 2003 (2004):368-375

“Solid Polymer Electrolytes from Dilithium Salts Based on New Bis[(perfluoroalkyl) sulfonyl]diimide Dianions. Preparation and Electrical Characterization”, O. E. Geiculescu, Jin Yang, H. Blau, R. Bailey-Walsh, S. Creager, W. T. Pennington, D. D. DesMarteau, Solid State Ionics 148 (1-2/2002): 173-183

“Enzymatic Reduction of Methylene Blue – A Potential Source for Chemical Regeneration of Nicotinamide Adenine Dinucleotide (NAD+)”, M. Tudorascu, O. E. Geiculescu, M. Pop, S. Tudorascu, C. Ghebuta, Progress in Catalysis, 1 (1/1992): 67-74

“Process for selective conversion of synthesis gas into high octane gasoline”, I.L. Ilie, E. Zamfirescu, O.E. Geiculescu, C. Teodorescu, A. Milea, G. Pop, E. Pop, C.E. Munteanu, P. Tomi, V. Ciobotaru, RO Patent 96838 April 28, 1989

 “Preparation process of an alkaline promoted iron catalyst for the selective conversion of the synthesis gas to a-olefins”, O. Carp, I.L. Ilie, E. Zamfirescu, O.E. Geiculescu, C. Teodorescu, C.E. Munteanu, V. Ciobotaru, G. Pop, C. Ciobanu, RO Patent 97225 November 29, 1988

“Process for selective conversion of synthesis gas into a mixture rich in aromatic hydrocarbons”, I.L. Ilie, O. Carp, E. Zamfirescu, O.E. Geiculescu, C. Teodorescu, C.E. Munteanu, V. Ciobotaru, G. Filoti, V.C. Spanu, E. Pop, G. Pop, P. Tomi, RO Patent 96839 November 14, 1988

“Preparation of a mixture of liquid hydrocarbons with high a-olefins content”, C. Ciobanu, I.L. Ilie, P. Tomi, E. Zamfirescu, O.E. Geiculescu, O. Carp, A. Milea, G. Pop, G. Musca, RO Patent 95052 December 26, 1987