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Hayden Evans (Fed)

Research Chemist

His work uses neutrons, X-rays, as well as other advanced characterization techniques to study materials for future energy economy technologies (energy generation, storage, transport, by-product remediation). His primary focus at NIST has focused on examining materials for gas sequestration and storage of gases, and solid-state electrolyte materials for batteries.


  • National Research Council Postdoctoral Fellowship, NIST, 2018
  • Dissertation Fellowship, UCSB, 2018
  • Outstanding Research Mentoring Award, UCSB MRL, 2018

Publications from NIST


  1. Hydrogen Storage with Aluminum Formate, ALF: Experimental, Computational, and Technoeconomic Studies
    Evans, H. A., Yildirim, T., Peng, P., Cheng, Y., Deng, Z., Zhang, Q., Mullangi, D., Zhao, D., Canepa, P., Breunig, H. M. Cheetham, A. K., Brown, C. M. Journal of the American Chemical Society145, 22150 – 22157.
    Featured in Science News article: "Chemical cages could store hydrogen, expand use of clean-burning fuel" 
  2. Exclusive Recognition of CO2 from Hydrocarbons by Aluminum Formate with Hydrogen-confined Pore Cavities
    Zhang Z, Deng Z, Evans H. A., Mullangi D., Kang C., Peh S. B., Wang Y., Brown C. M., Wang J., Canepa P., Cheetham A.K. Journal of the American Chemical Society 145, 11643 - 11549.
  3. Noncryogenic Air Separation Using Aluminum Formate Al(HCOO)3 (ALF)
    Mullangi, D., Evans, H.A., Yildirim, T., Wang, Y., Deng, Z., Zhang, Z., Mai, T.T., Wei, F., Wang, J., Hight Walker, A.R., Brown, C.M., Zhao, D., Canepa, P., Cheetham, A.K., Journal of the American Chemical Society 145, 9850 - 9856.
  4. Rapid and Energy‐Efficient Synthesis of Disordered Rocksalt Cathodes
    Wu, V. C., Evans, H. A., Giovine, R., Preefer, M. B., Ong, J., Yoshida, E., Cabelguen, P. E., Clément, R. J. Advanced Energy Materials, 13(10), 2203860.


  1. Vacancy-Driven Disorder and Elevated Dielectric Response in the Pyrochlore Pb1.5Nb2O6.5
    Dang, U., O’Hara, J., Evans, H. A., Olds, D., Chamorro, J., Hickox-Young, D., Laurita, G., Macaluso, R. T. Inorganic Chemistry, 61(46), 18601 - 18610.
  2. Aluminum formate, Al(HCOO)3: An earth-abundant, scalable, and highly selective material for CO2 capture
    Evans, H. A., Mullangi, D., Deng, Z., Wang, Y., Peh, S. B., Wei, F., Wang, J., Brown, C. M., Zhao, D., Canepa, P., Cheetham, A. K. Science Advances 8, eade1473
  3. Lattice Dynamics in the NASICON NaZr2(PO4)3 Solid Electrolyte from Temperature-Dependent Neutron Diffraction, NMR, and Ab Initio Computational Studies
    Morgan, E. E., Evans, H. A., Pilar, K., Brown, C. M., Clément, R. J., Maezono, R., Seshadri, R., Monserrat, B., Cheetham, A. K. Chemistry of Materials, 34(9), 4029 - 4038.
  4. Stacking Faults Assist Lithium-Ion Conduction in a Halide-Based Superionic Conductor
    Sebti, E., Evans, H. A., Chen, H., Richardson, P. M., White, K. M., Giovine, R., Koirala, K. P., Xu, Y., Gonzalez-Correa, E., Wang, C. Brown, C. M., Canepa, P., Cheetham, A. K., Clément, R. J. Journal of the American Chemical Society, 144(13), 5795 - 5811.


  1. Magnetic structure determination of high-moment rare-earth-based laminates
    Potashnikov, D., Caspi, E. N., Pesach, A., Tao, Q., Rosén, J., Sheptyakov, D., Evans, H. A., Ritter, C., Salman, Z., Bonfa, P. and Ouisse, T., Barbier, M., Rivin, O., Keren, A. Physical Review B, 104(17), 174440.
  2. Neutron scattering studies of materials for hydrogen storage
    Klein, R. A., Evans, H. A., Trump, B. A., Udovic, T. J. Brown, C. M. (No. NREL/CH-5900-78964). National Renewable Energy Lab.(NREL), Golden, CO (United States).
  3. Layered double perovskites
    Evans, H. A., Mao, L., Seshadri, R., Cheetham, A. K., 2021. Annual Review of Materials Research, 51, 351 - 380.
  4. Ambient-Temperature Hydrogen Storage via Vanadium (II)-Dihydrogen Complexation in a Metal–Organic Framework
    Jaramillo, D. E., Jiang, H. Z., Evans, H. A., Chakraborty, R., Furukawa, H., Brown, C. M., Head-Gordon, M., Long, J. R., Journal of the American Chemical Society, 143(16), 6248 - 6256.


  1. Observation of an Intermediate to H2 Binding in a Metal–organic Framework
    Barnett, B. R., Evans, H. A., Su, G. M., Jiang, H. Z., Chakraborty, R., Banyeretse, D., Hartman, T. J., Martinez, M. B., Trump, B. A., Tarver, J. D., Dods, M. N., Drisdell, W. S., Hurst, K, Gennett, T., FitzGerald, S., Brown, C. M., Head-Gordon, M., Long, J. R. Journal of the American Chemical Society, 143(36), 14884 - 14894.
  2. Dynamics of Hydroxyl Anions Promotes Lithium Ion Conduction in Antiperovskite Li2OHCl
    Wang, F., Evans, H. A., Kim, K., Yin, L., Li, Y., Tsai, P. C., Liu, J., Lapidus, S. H., Brown, C.M., Siegel, D. J.,Chiang, Y. M., Chemistry of Materials, 32(19), 8481 - 8491.
  3. Magnetic properties of and the impact of substitution on the magnetocaloric effect
    Potashnikov, D., Caspi, E. N., Pesach, A., Kota, S., Sokol, M., Hanner, L. A., Barsoum, M.W., Evans, H. A., Eyal, A., Keren, A. Rivin, O. Physical Review Materials, 4(8), 084404.
  4. Perovskite-related ReO 3-type structures
    Evans, H. A., Wu, Y., Seshadri, R.Cheetham, A. K., Nature Reviews Materials, 5(3), 196 - 213.


Stacking Faults Assist Lithium-Ion Conduction in a Halide-Based Superionic Conductor

Elias Sebti, Hayden Evans, Hengning Chen, Peter Richardson, Kelly White, Raynald Giovine, Krishna P. Koirala, Yaobin Xu, Eliovardo Gonzalez-Correa, Chongmin Wang, Craig Brown, Anthony Cheetham, Pieremanuele Canepa, Raphaele Clement
In the pursuit of urgently-needed, energy dense solid-state batteries for electric vehicle and portable electronics applications, halide solid electrolytes

Magnetic Structure Determination of High-Moment Rate-Earth-Based Laminates

D. Potashnikov, E. Caspi, A. Pesach, Q. Tao, J. Rosen, D. Sheptyakov, Hayden Evans, C. Ritter, Z. Salman, P. Bonfa, T. Ouisse, M. Barbier, O. Rivin, A. Keren
We report μSR on the 2D rare earth based parent magnets (Mo 2/3 RE 1/3 ) 2 AlC with RE = Nd, Gd, Tb, Dy, Ho and Er, and neutron diffraction on the series with

Neutron Scattering Studies of Materials for Hydrogen Storage

Ryan Klein, Hayden Evans, Benjamin Trump, Terrence J. Udovic, Craig Brown
Hydrogen storage presents a significant barrier to the widespread adaptation of hydrogen as an energy source in mobile and stationary applications. The
Created July 30, 2019, Updated November 1, 2023