Research interests Christopher Hahn completed his doctorate at the University of California Berkeley in 2012, where he studied bandgap engineering of 1-dimensional nitride and oxynitride materials for solar water splitting. After receiving his Ph.D., he conducted his postdoctoral research on catalyst discovery for electrochemical CO2 reduction at Stanford University within the SUNCAT Center. He transitioned to a Staff Scientist position at SLAC National Accelerator Laboratory in 2015, where he was a Principal Investigator in the SUNCAT Center. He was also a Scientific Program Lead for the Durability Team of the Liquid Sunlight Alliance, a Department of Energy Solar Fuels Hub. He received the 2020 ECS Energy Technology Division Young Investigator Award for his contributions to the fields of CO2 and CO electrolysis. In 2021, he moved to Lawrence Livermore National Laboratory where he is a Deputy Group Leader of the Materials for Energy and Climate Security Group and leads projects on CO2 electrolyzer scale-up, reactive capture, and biomass conversion. He is also the Deputy Director of the Laboratory for Energy Applications for the Future (LEAF) Center at LLNL, and the Center for Closing the Carbon Cycle, an Energy Frontier Research Center sponsored by the Department of Energy. Current position(s) Staff Scientist Deputy Group Leader of the Materials for Energy and Climate Security Group Deputy Director of the Laboratory for Energy Applications for the Future (LEAF) Center Deputy Director of the Center for Closing the Carbon Cycle (4C) Career path Staff Scientist, SLAC National Accelerator Laboratory (2016-2021) Scientific Program Lead for Durability, Liquid Sunlight Alliance (LiSA, 2020-2021) Postdoctoral Scholar, Stanford University (2013-2015) Subject Matter Expertise carbon utilization; materials chemistry; electrocatalysis; in situ characterization

PhD, Chemistry, University of California, Berkeley, 2012

BS, Chemistry, University of California, Berkeley, 2007

Selected publications

Moore, T.; Oyarzun, D.I.; Li, W.; Lin, T.Y.; Goldman, M.; Wong, A.A.; Jaffer, S.A.; Sarkar, A.; Baker, S.E., Duoss, E.B.; Hahn, C., Electrolyzer energy dominates separation costs in state-of-the-art CO₂ electrolyzers: Implications for single-pass CO₂ utilization, Joule, 2023, 7, 782-796.

Goldman, M.; Prajapati, A.; Duoss, E.; Baker, S., Hahn, C., Bridging Fundamental Science and Applied Science to Accelerate CO₂ Electrolyzer Scale-up, Current Opinion in Electrochemistry, 2023, 39, 101248.

Wei, L.; Hossain, M.D.; Boyd, M.J.; Avilés Acosta, J.E.; Kreider, M.E.; Nielander, A.C.; Burke Stevens, M.; Jaramillo, T.F.; Bajdich, M.; Hahn, C., Insights into active sites and mechanisms of benzyl alcohol oxidation on nickel iron oxyhydroxide electrodes, ACS Catalysis, 2023, 13, 4272-4282.

Wakerley, D.; Lamaison, S.; Wicks, J.; Clemens, A.; Feaster, J.; Corral, D.; Jaffer, S.A.; Sarkar, A.; Fontecave, M.; Duoss, E.B.; Baker, S.; Sargent, E.H.; Jaramillo, T.F., Hahn, C., Gas diffusion electrodes, reactor designs and key metrics of low-temperature CO₂ electrolysers, Nature Energy, 2022, 7, 130-143.

Lamaison, S.; Wakerley, D.; Kracke, F.; Moore, T.; Zhou, L.; Lee, D.; Wang, L.; Hubert, M.; Aviles Acosta, J.E.; Gregoire, J.M.; Duoss, E.B.; Baker, S.; Beck, V.; Spormann, A.; Fontecave, M.; Hahn, C.; Jaramillo, T.F., Designing a Zn-Ag catalyst matrix and electrolyser system for CO₂ conversion to CO and beyond, Advanced Materials, 2022, 34, 2103963.

Wang, L.; Peng, H.; Lamaison, S.; Qi, Z.; Koshy, D.M.; Burke Stevens, M.; Wakerley, D.; Zamora Zeledón, J.A.; King, L.A.; Zhou, L.; Lai, Y.; Fontecave, M.; Gregoire, J.; Abild-Pedersen, F.; Jaramillo, T.F.; Hahn, C., Bimetallic Effects on Zn-Cu Electrocatalysts Enhance Activity and Selectivity for the Conversion of CO₂ to CO, Chem Catalysis, 2021, 1, 663-680.

Landers, A.T.; Peng, H.; Koshy, D.M.; Lee, S.H.; Feaster, J.T.; Lin, J.C.; Beeman, J.W.; Higgins, D.; Yano, J.; Drisdell, W.S.; Davis, R.C.; Bajdich, M.; Abild-Pedersen, F.; Mehta, A.; Jaramillo, T.F.; Hahn, C., Dynamics and Hysteresis of Hydrogen Intercalation and Deintercalation in Palladium Electrodes: A Multimodal in situ X-Ray Diffraction, Coulometry, and Computational Study, Chemistry of Materials, 2021, 33, 5872-5884.

Wang, L.; Higgins, D.C.; Ji, Y.; Morales-Guio, C.G.; Chan, K.; Hahn, C., Jaramillo, T.F., Selective Reduction of CO to Acetaldehyde with CuAg Electrocatalysts, Proceedings of the National. Academy of Sciences, 2020, 117, 12572-12575.

Ringe, S.; Morales-Guio, C.G.; Chen, L.D.; Jaramillo, T.F.; Hahn, C.; Chan, K., Double layer charging driven carbon dioxide adsorption limits the rate of electrochemical carbon dioxide reduction on Gold, Nature Communications., 2020, 11, 33.

Wang, L.; Nitopi, S.A.; Wong, A.B.; Snider, J.L.; Nielander, A.C.; Morales-Guio, C.G.; Orazov, M.; Higgins, D.C.; Hahn, C.; Jaramillo, T.F., Electrochemically converting carbon monoxide to liquid fuels by directing selectivity with electrode surface area, Nature Catalysis, 2019, 2, 702-708.

De Luna, P.; Hahn, C.; Higgins, D.; Jaffer, S.; Jaramillo, T.F.; Sargent, E.H., What would it take for renewably powered electrosynthesis to displace petrochemical processes? Science, 2019, 364, eaav3506.

Morales-Guio, C.G.; Cave, E.R.; Feaster, J.T.; Kuhl, K.P.; Jackson, A.; Johnson, N.C.; Abram, D.N.; Hatsukade, T.; Hahn, C.; Jaramillo, T.F., Improved CO₂ reduction activity towards C₂₊ alcohols on a tandem gold on copper electrocatalyst, Nature Catalysis, 2018, 1, 764-771.

Full publication list available on Google Scholar and Scopus. ORCID: 0000-0002-2772-6341

• DDS&T Excellence in Publication Award, 2022
• Electrochemical Society Energy Technology Division Young Investigator Award, 2020