My research focuses on the synthesis and screening of lithium-ion battery electrolyte additives, studying the stability and reactivity of aromatic radical cations, and controlling release of aqueous solutions from microcapsules and hydrogels. Students and postdocs in my group have opportunities to use DFT calculations to predict geometry and electronic properties of organic compounds and their radical cations, as well as experimental techniques including organic synthesis, a variety of spectroscopic and electrochemical techniques, optical and electron microscopy, and battery fabrication and cycling.
Despite their prevalence in consumer electronics, which ranges from cell phones to laptops to electric vehicles, secondary Li-ion batteries need improvement in order to extend their lifetimes. Each time a Li-ion battery charges and discharges, the liquid electrolyte (often carbonate solvents with lithium salts) partially decomposes, contributing to the formation of a solid electrolyte interface (SEI) layer between the electrodes and electrolyte. The cause for decomposition is that the electrolyte solvents are unstable in the voltages of lithium ion battery operation, which are generally quite reducing. We are developing additives for protection during normal cycling and during battery overcharge, when the electrical potential one or more batteries in a series is raised beyond the end-of-charge potential of the cathode. Operating in this overcharge results in electrolyte oxidation and increased temperatures, which can lead battery failure.
In addition to the decrease in battery lifetime, this failure mechanism can be dangerous if batteries ignite, causing a cascade of thermal runaway events in neighboring batteries. Given the size of the batteries in electric and hybrid electric vehicles (about 200 kg), thermal runaway is a major safety concern due to the large amount of reactive material within one battery pack. We are therefore improving the stability and efficacy of electrolyte additives through structural modifications for steric protection of reactive groups and electronic modification through the introduction of electron donating or withdrawing substituents. Involvement in this project can range from the synthesis of new small molecules as electrolyte additives, battery fabrication, and characterization of battery cycling performance and additive reactivity.
In addition to increasing battery lifetimes and preventing failure, ultimately some batteries will fail, whether silently or violently. It is the violent failure mechanisms we need to prevent, both for cost and safety reasons. We are therefore working on the development of small molecule additives for shutdown of Li-ion mobility, either in response to increases in temperature or battery potentials that are beyond a certain threshhold. We are also interested in developing new separators – the microporous layer (often polymeric) between battery electrodes that keeps a battery from short circuiting – that would allow for temporary or permanent Li-ion battery shutdown when a battery is compromised.
My research projects use organic chemistry, polymer chemistry, and spectroscopy to solve problems in materials science and engineering. I endeavor to utilize information on the basic structure and electronic properties of conjugated organic molecules in systems that have relevance to applications in lithium-ion (Li-ion) batteries. My group uses information to assist in the design of new materials for critical applications. Members of my lab will have opportunities to synthesize small organic compounds and polymers, perform spectroscopic and analytical experiments, and incorporate successful materials Li-ion batteries. While I am an organic chemist by degree, my research experience has included spectroscopic characterization, the fabrication and testing of devices such as li-ion batteries and organic LEDs, and mechanical testing of polymers. I encourage my students to work collaborate with groups at the Center for Applied Energy Research and Argonne National Laboratory, among others, to help them understand the broader implications of their research and to learn new techniques.
University of Illinois
Abouimrane, A.; Odom, S.; Tavassool, H.; Schulmerich, M.C.; Bhargava, R.; Gewirth, A.A.; Moore, J.S.,* Amine, K.* "3-Hexylthiophene as a Stabilizing Additive for High Voltage Cathodes for Lithium-Ion Batteries." J. Electrochem. Soc. 2013, 160, A168-A277. DOI: 10.1149/2.039302jes
Odom, S.A.; Chayanupatkul, S; Blaiszik, B.J.; Jackson, A.C.; Braun, P.V.; Sottos, N.R.; White, S.R.;* Moore, J.S.* “A Self-Healing Conductive Ink.” Adv. Mater. 2012,24, 2578-2581.Cover Article. DOI: 10.1002/adma.201200196
Esser-Kahn, A.P.; Odom, S.A.; Sottos, N.R.; White, S.R.; Moore, J.S. “Triggered Release from Polymer Capsules.” Macromolecules, 2011, 44, 5539–5553, cover article. DOI: 10.1021/ma201014n
Odom, S.A.; Caruso, M.M.; Finke, A.D.; Prokup, A.R.; Ritchey, J.A.; Leonard, J.R.; White, S.R.; Sottos, N. R.; Moore, J. S. “TTF and TCNQ Microcapsules for Restoration of Conductivity to Mechanically Damaged Electronic Materials.” Adv. Funct. Mater. 2010, 20, 1721–1727. Cover Article. DOI: 10.1002/adfm.201000159
Kryger, M.J.; Ong, M.T.; Odom, S.A.; Sottos, N.R.; White, S.R.; Martinez, T.J.; Moore, J.S. “Masked Cyanoacrylates Unveiled by Mechanical Force.” J. Am. Chem. Soc. 2010, 132, 4558-4559. DOI:10.1021/ja910716s
Georgia Institute of Technology
Barlow, S.;* Risko, C.; Odom, S.A.; Zheng, S.; Beverina, L; Bredas, J.-L., Marder, S.R. “Tuning Delocalization in the Radical Cations of 1,4-Bis[4-(diarylamino)styryl]benzenes, 2,5-Bis[4-(diarylamino)styryl]thiophenes, and 2,5-Bis[4-(diarylamino)styryl]pyrroles through Substituent Effects.” J. Am. Chem. Soc., 2012, 134, 10146-10155. DOI: 10.1021/ja3023048
Barlow, S.; Odom, S.A.; Lancaster, K.; Getmanenko, Y.A.; Mason, R.J.; Coropceanu, V.; Brédas, J.-L.; Marder, S.R. “Electronic and Optical Properties of 4H-Cyclopenta[2,1-b:3,4-b′]bithiophene Derivatives and Their 4-Heteroatom-Substituted Analogues: A Joint Theoretical and Experimental Comparison.” J. Phys. Chem. B 2010, 114, 14397–14407. DOI: 10.1021/jp100774r
Sanchez-Carrera, R.S.; Odom, S.A.; Kinnibrugh, T.L.; Sajoto, T.; Kim, E.-G.; Timofeeva, T.V.; Barlow, S.; Coropceanu, V.; Marder, S.R.; Brédas, J.-L. “Electronic Properties of the 2,6-Diiododithieno[3,2-b:2’,3’-d]thiophene Molecule and Crystal: A Joint Experimental and Theoretical Study.” J. Phys. Chem. B 2010, 114, 749-755. DOI: 10.1021/jp909164w
Caruso, M.M.; Davis, D.A.; Shen, Q.; Odom, S.A.; Sottos, N.R.; White, S.R.; Moore, J.S. “Mechanically-Induced Chemical Changes in Polymeric Materials.” Chem. Rev. 2009, 109, 5755–5798. DOI:10.1021/cr9001353
Odom, S.A.; Kelley, R. F.; Ohira, S.; Ensley, T.; Huang, C.; Padilha, L.A.; Webster, S.; Coropceanu, V.; Barlow, S.; Hagan, D.; Van Stryland, E.W.; Brédas, J. L.; Anderson, H.L.; Wasielewski, M.R.; Marder, S.R. “Photophysical Properties of an Alkyne-Bridged Bis(Zinc Porphyrin)-Perylene Diimide Derivative.” J. Phys. Chem. A 2009, 113, 10826-10832. DOI: 10.1021/jp905214g
Odom, S.A.; Webster, S.; Padilha, L.A.; Peceli, D.; Hu, H.; Nootz, G.; Chung, S.-J.; Ohira, S.; Matichak, J.D.; Przhonska, O.V.; Kachkovski, A.D.; Barlow, S.; Brédas, J.-L.; Anderson, H.L.; Hagan, D.J.; Van Stryland, E.W.; Marder, S.R. “Synthesis and Two-Photon Spectrum of a Bis(Porphyrin)-Substituted Squaraine.” J. Am. Chem. Soc. 2009, 131, 7510-7511. DOI: 10.1021/ja901244e
An, Z.; Odom, S.A.; Kelley, R.; Huang, C.; Barlow, S.; Zhang, X.; Padilha, L.; Fu, J.; Webster, S.; Hagan, D.; Van Stryland, E.W.; Marder, S.R. “Synthesis and Photophysical Properties of Donor- and Acceptor-Substituted 1,7-Di(arylalkynyl)perylene-3,4:9,10-bis(dicarboximide)s.” J. Phys. Chem. A 2009, 113(19), 5585-5593.DOI: 10.1021/jp900152r
Lancaster, K.; Odom, S.A.; Jones, S.; Thayumanavan, S.; Marder, S.R.; Brédas, J.-L.; Coropceanu, V.; Barlow, S. “Intramolecular Electron-Transfer Rates in Mixed-Valence Triarylamines: Measurement by Variable-Temperature ESR Spectroscopy and Comparison with Optical Data.” J. Am. Chem. Soc. 2009, 131(5), 1717-1723. DOI: 10.1021/ja808465c
Odom, S.A.; Lancaster, K.; Beverina, L.; Lefler, K.M.; Thompson, N.J.; Coropceanu, V.; Brédas, J.-L.; Marder, S.R.; Barlow, S. “Bis(di-4-alkoxyphenyl)amino Derivatives of Dithienylethene, Bithiophene, Dithienothiophene, and Dithienopyrrole: Palladium-catalysed Synthesis and Highly Delocalised Racial Cations.” Chem. Eur. J. 2007, 13, 9637-9646. DOI: 10.1002/chem.200700668
University of Kentucky
Payne, M.M.; Odom, S.A.; Parkin, S.R.; Anthony, J.E. “Stable, Crystalline Acenedithiophenes with up to Seven Linearly Fused Rings.” Org. Lett. 2004, 6(19), 3325-3328. DOI: 10.1021/ol048686d
Odom, S.A.;Parkin, S.R.; Anthony, J.E.“Tetracene Derivatives as Potential Red Emitters for Organic LEDs.” Org. Lett. 2003, 5(23), 4245-4248. DOI: 10.1021/ol035415e