Greg Coffey

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352
(509) 375-6602
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Biography

Greg Coffey is a scientist in the Electrochemical Materials & Systems group. He received a BA, and MS in Materials Science and Engineering from Washington State University.

Research Interests

High temperature electrochemistry (600-1000C)
SOFC fuel cell, NO_X, / O₂ automotive exhaust sensors, environmental degradation
High pressure phase equilibria (+50KSI)
Diesel fuel, and synthetic analog wax/crystallite formation
Corrosion at elevated temperatures/pressures (300C,2000PSI)
Mechanistic studies of Zircalloy corrosion
Ionic conduction
H⁺, O^-2 conduction in dense oxide electrolytes
Energy storage
Lithium, Nickle, Sodium, Lead acid

Education and Credentials

B.A. Materials Science and Engineering
M.S. Materials Science and Engineering

PNNL Patents

U.S. Patent No. 9,444,091, September 13, 2016, "Apparatuses for Making Cathodes for High-temperature, Rechargeable Batteries".
U.S. Patent No. 8,728,174, May 20, 2014, " Methods and apparatuses for making cathodes for high-temperature, rechargeable batteries".
U.S. Patent No. 7,758,992, July 20, 2010, "Copper Substituted Perovskite Compositions for Solid Oxide Fuel Cell Cathodes and Oxygen Reduction Electrodes in other Electrochemical Devices".

PNNL Publications

2022

Bays J.T., R. Gieleciak, M.B. Viola, R.P. Lewis, J.R. Cort, K.B. Campbell, and G.W. Coffey, et al. 2022. "Detailed Compositional Comparison of Hydrogenated Vegetable Oil with Several Diesel Fuels and their Effect on Engine Emissions." SAE International Journal of Fuels and Lubricants 16, no. 3. PNNL-SA-166133. doi:10.4271/04-16-03-0015
Prabhakaran R., G.W. Coffey, O.A. Marina, J.S. Hardy, D.J. Edwards, and A.M. Casella. 2022. Final Report: Improved Understanding of Zircaloy Hydrogen Pickup Mechanisms in BWRs. NSUF Report. PNNL-32984. Richland, WA: Pacific Northwest National Laboratory. Final Report: Improved Understanding of Zircaloy Hydrogen Pickup Mechanisms in BWRs. NSUF Report

2020

Jones M.C., K.B. Campbell, M.J. Coffey, O.A. Marina, G.W. Coffey, A. Heredia-Langner, and J.C. Linehan, et al. 2020. "High-Pressure Apparatus for Monitoring Solid-Liquid Phase Transitions." Review of Scientific Instruments 91, no. 9:Article No. 094102. PNNL-SA-148023. doi:10.1063/5.0015518

2019

Hardy J.S., G.W. Coffey, C.A. Coyle, and N.L. Canfield. 2019. Mechanofusion for Improved Control of Cermet TPBAR Pellet Microstructure. PNNL-29287. Richland, WA: Pacific Northwest National Laboratory. Mechanofusion for Improved Control of Cermet TPBAR Pellet Microstructure
Polikarpov E., C.A. Fernandez, G.W. Coffey, S.K. Nune, A.J. Karkamkar, B.J. Garcia, and T.L. Lemmon, et al. 2019. "Toward Polarization-Switched Molecular Pumps." ACS Applied Energy Materials 2, no. 6:4092-4097. PNNL-SA-138089. doi:10.1021/acsaem.9b00252

2018

Overman N.R., X. Jiang, R.K. Kukkadapu, T. Clark, T.J. Roosendaal, G.W. Coffey, and J.E. Shield, et al. 2018. "Physical and electrical properties of melt-spun Fe-Si (3-8 wt%) soft magnetic ribbons." Materials Characterization 136. PNNL-SA-129219. doi:10.1016/j.matchar.2017.12.019

2014

Viswanathan V.V., A.J. Crawford, D.E. Stephenson, S. Kim, W. Wang, B. Li, and G.W. Coffey, et al. 2014. "Cost and Performance Model for Redox Flow Batteries." Journal of Power Sources 247. PNNL-SA-91534. doi:10.1016/j.jpowsour.2012.12.023

2013

Kim S., E.C. Thomsen, G. Xia, Z. Nie, J. Bao, K.P. Recknagle, and W. Wang, et al. 2013. "1 kW / 1kWh Advanced Vanadium Redox Flow Battery Utilizing Mixed Acid Electrolytes." Journal of Power Sources 237. PNNL-SA-92689. doi:10.1016/j.jpowsour.2013.02.045
Reed D.M., G.W. Coffey, E.S. Mast, N.L. Canfield, J. Mansurov, X. Lu, and V.L. Sprenkle. 2013. "Wetting of Sodium on ß?-Al2O3/YSZ Composites for Low Temperature Planar Sodium-Metal Halide Batteries." Journal of Power Sources 227. PNNL-SA-89519. doi:10.1016/j.jpowsour.2012.11.034
Vilayur Ganapathy S., M.I. Nandasiri, A.G. Joly, P.Z. El-Khoury, T. Varga, G.W. Coffey, and B. Schwenzer, et al. 2013. "Silver nanorod arrays for photocathode applications." Applied Physics Letters 103, no. 16:Article No. 161112. PNNL-SA-97756. doi:10.1063/1.4825262

2010

Lu X., G.W. Coffey, K.D. Meinhardt, V.L. Sprenkle, Z. Yang, and J.P. Lemmon. 2010. "High Power Planar Sodium-Nickel Chloride Battery." ECS Transactions 28, no. 22:7-13. PNNL-SA-73438. doi:10.1149/1.3492326
Marina O.A., C.A. Coyle, E.C. Thomsen, D.J. Edwards, G.W. Coffey, and L.R. Pederson. 2010. "Degradation Mechanisms of SOFC Anodes in Coal Gas Containing Phosphorus." Solid State Ionics 181, no. 8-10:430-440. PNNL-SA-67342.
Yoon K.J., C.N. Cramer, E.C. Thomsen, C.A. Coyle, G.W. Coffey, and O.A. Marina. 2010. "Calcium- and Cobalt-doped Yttrium Chromites as an Interconnect Material for Solid Oxide Fuel Cells." Journal of the Electrochemical Society 157, no. 6:B856-B861. PNNL-SA-69520.

2009

Coyle C.A., O.A. Marina, E.C. Thomsen, D.J. Edwards, C.N. Cramer, G.W. Coffey, and L.R. Pederson. 2009. "Interactions of nickel/zirconia solid oxide fuel cell anodes with coal gas containing arsenic." Journal of Power Sources 193, no. 2:730-738. PNNL-SA-65571. doi:10.1016/j.jpowsour.2009.04.042
Marina O.A., L.R. Pederson, C.A. Coyle, E.C. Thomsen, and G.W. Coffey. 2009. "Ni/YSZ Anode Interactions with Impurities in Coal Gas." ECS Transactions 25, no. 2:2125-2130. PNNL-SA-67224. doi:10.1149/1.3205760
Thomsen E.C., G.W. Coffey, L.R. Pederson, and O.A. Marina. 2009. "Performance of Lanthanum Strontium Manganite Electrodes at High Pressure." Journal of Power Sources 191, no. 2:217-224. PNNL-SA-62574.

2008

Zhou X.D., L.R. Pederson, E.C. Thomsen, Z. Nie, and G.W. Coffey. 2008. "Nonstoichiometry and Transport Properties of Ca3Co4�xO9+d (x = 0 - 0.4)." Electrochemical and Solid-State Letters 12, no. 2:F1-F3. PNNL-SA-63405. doi:10.1149/1.3039948

2007

Coffey G.W., L.R. Pederson, D.M. Ponds, P.C. Rieke, and E.C. Thomsen. 2007. "Fabrication and Characterization of a Novel Luggin Capillary Reference Electrode for use in Solid State Electrolytes." Solid State Ionics 178, no. 11-12:827-832. PNNL-SA-54159.
Marina O.A., L.R. Pederson, M.C. Williams, G.W. Coffey, K.D. Meinhardt, C.D. Nguyen, and E.C. Thomsen. 2007. "Electrode Performance in Reversible Solid Oxide Fuel Cells." Journal of the Electrochemical Society 154, no. 5:B452-B459. PNNL-SA-50946.
McCarthy B., L.R. Pederson, H.U. Anderson, X.D. Zhou, P. Singh, G.W. Coffey, and E.C. Thomsen. 2007. "Enhanced Shrinkage of Lanthanum Strontium Manganite (La0.90Sr0.10MnO3+d) Resulting from Thermal and Oxygen Partial Pressure Cycling." Journal of the American Ceramic Society 90, no. 10:3255-3262. PNNL-SA-53837. doi:10.1111/j.1551-2916.2007.01890.x

2006

Yang Z., G.W. Coffey, J.P. Rice, P. Singh, J.W. Stevenson, and G. Xia. 2006. "High Temperature Corrosion Behavior of Oxidation Resistant Alloys under SOFC Interconnect Dual Exposures." In Advances in Solid Oxide Fuel Cells II: Ceramic Engineering and Science Proceedings, edited by NP Bansal, A Wereszczak and E Lara-Curzio, 27, 211-221. Westerville, Ohio:American Ceramic Society. PNNL-SA-48342. doi:10.1002/9780470291337.ch21
Zhou X.D., J. Yang, E.C. Thomsen, Q. Cai, B.J. Scarfino, Z. Nie, and G.W. Coffey, et al. 2006. "Electrical, Thermoelectric, and Structural Properties of La(MxFe1-x)O3 (M=Mn, Ni, Cu)." Journal of the Electrochemical Society 153, no. 12:J133-J138. PNNL-SA-50730.

2005

Coffey G.W., J.S. Hardy, O.A. Marina, L.R. Pederson, P.C. Rieke, and E.C. Thomsen. 2005. "Copper Doped Lanthanum Strontium Ferrite for Reduced Temperature Solid Oxide Fuel Cells." In Fourteenth International Conference on Solid State Ionics, Jun 22-27 2003, Monterey, CA., USA. Published in Solid State Ionics, 175, 73-78. Amsterdam:Elsevier. PNNL-SA-44931.

2004

Coffey G.W., J.S. Hardy, O.A. Marina, L.R. Pederson, P.C. Rieke, and E.C. Thomsen. 2004. "Copper Doped Lanthanum Strontium Ferrite for Reduced Temperature Solid Oxide Fuel Cells." Solid State Ionics 175, no. 1-4:73-78. PNNL-SA-46526. doi:10.1016/j.ssi.2004.09.015
Marina O.A., G.W. Coffey, L.R. Pederson, P.C. Rieke, E.C. Thomsen, and M.C. Williams. 2004. "ELECTRODE DEVELOPMENT FOR REVERSIBLE SOLID OXIDE FUEL CELLS." In 2004 Joint International Meeting, Fifth International Symposium on Ionic and Mixed Conducting Ceramics, 368-381. Pennington, New Jersey:Electrochemical Society. PNNL-SA-42319.

2003

Coffey G.W., J.S. Hardy, L.R. Pederson, P.C. Rieke, and E.C. Thomsen. 2003. "Oxygen Reduction Activity of Lanthanum Strontium Nickel Ferrite." Electrochemical and Solid-State Letters 6, no. 6:A121-A124. PNNL-SA-38106.
Coffey G.W., J.S. Hardy, L.R. Pederson, P.C. Rieke, E.C. Thomsen, and M.B. Walpole. 2003. "Electrochemical Properties of Lanthanum Strontium Aluminum Ferrites for the Oxygen Reduction Reaction." Solid State Ionics 158, no. 1-2:1-9. PNNL-SA-36085.
Coffey G.W., L.R. Pederson, and P.C. Rieke. 2003. "Competition Between Bulk and Surface Pathways in Mixed Ionic Electronic Conducting Oxygen Electrodes." Journal of the Electrochemical Society 150, no. 8:A1139-A1151. PNNL-SA-36866.

2002

Coffey G.W., J.S. Hardy, K.D. Meinhardt, O.A. Marina, and S.P. Simner. 2002. "All-Ceramic SOFC Tolerant to Oxygen, Carbon and Sulfur." In 2002 Fuel Cell Seminar: Fuel Cells - Reliable, Clean Energy for the World, November 19-21, 2002, Palm Springs, California., 295-298. Washington, District Of Columbia:Fuel Cell Seminar. PNNL-SA-39163.