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Search Publications by: Hayden Evans (Fed)

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Displaying 1 - 19 of 19

Water-Enhanced CO2 Capture with Molecular Salt Sodium Guanidinate

June 3, 2024
Author(s)
Hayden Evans, Marcus Carter, Wei Zhou, Taner N. Yildirim, Craig Brown, Hui Wu
Solid-state amine absorbent materials, including those containing guanidine derivatives, have received tremendous attention as the world combats the challenges of climate change. Although these materials are attractive for their selective CO2 capture

Linkage Transformations in a Three-Dimensional Covalent Organic Framework for High-Capacity Adsorption of Perfluoroalkyl Substances

November 3, 2023
Author(s)
Andrea Zeppuhar, Devin Rollins, Dale L. Huber, Emmanuel Bazan-Bergamino, Fu Chen, Hayden Evans, Mercedes Taylor
Despite their many advantages, covalent organic frameworks (COFs) built from three-dimensional monomers are synthetically difficult to functionalize. Herein, we provide a new synthetic approach to the functionalization of a three-dimensional covalent

Hydrogen Storage with Aluminum Formate, ALF: Experimental, Computational, and Technoeconomic Studies

September 28, 2023
Author(s)
Hayden Evans, Taner N. Yildirim, Peng Peng, Yongqiang Cheng, Zeyu Deng, Qiang Zhang, Dinesh Mullangi, Dan Zhao, Pieremanuele Canepa, Hanna M. Breunig, Anthony K. Cheetham, Craig Brown
Long-duration storage of hydrogen is necessary for coupling renewable H2 with stationary fuel cell power applications. In this work, aluminum formate (ALF), which adopts the ReO3-type structure, is shown to have remarkable H2 storage performance at non

Exclusive Recognition of CO2 from Hydrocarbons by Aluminum Formate with Hydrogen-Confined Pore Cavities

May 31, 2023
Author(s)
Zhaoqiang Zhang, Zeyu Deng, Hayden Evans, Dinesh Mullangi, Chengjun Kang, Shing B. Peh, Yuxiang Wang, Craig Brown, John Wang, Pieremanuele Canepa, Anthony K. Cheetham, Dan Zhao
Exclusive capture of carbon dioxide (CO2) from hydrocarbons via adsorptive separation is an important technology in the petrochemical industry, especially for acetylene (C2H2) production. However, the physicochemical similarities between CO2 and C2H2

Noncryogenic Air Separation using Aluminum Formate Al(HCOO) 3 (ALF)

May 3, 2023
Author(s)
Dinesh Mullangi, Hayden Evans, Taner N. Yildirim, Yuxiang Wang, Zeyu Deng, Zhaoqiang Zhang, Thuc Mai, Fengxia Wei, John Wang, Angela R. Hight Walker, Craig Brown, Dan Zhao, Pieremanuele Canepa, Anthony K. Cheetham
Separating oxygen from air to create oxygen-enriched gas streams is a process that is significant in both industrial and medical fields. However, the prominent technologies for creating oxygen-enriched gas streams are both energy and infrastructure

Vacancy-Driven Disorder and Elevated Dielectric Response in the Pyrochlore Pb 1.5 Nbd2^O 6.5

November 21, 2022
Author(s)
Uyen Dang, Jake O'Hara, Hayden Evans, Daniel Olds, Juan Chamorro, Daniel Hickox-Young, Geneva Laurita, Robin Macaluso
Lone-pair driven distortions are a hallmark of many technologically-important lead (Pb)-based materials. The role of Pb 2+ in polar perovskites is well understood and easily manipulated for applications in piezo- and ferroelectricity, but the control of

Aluminum Formate, Al(HCOO)3: An Earth-Abundant, Scalable, and Highly Selective Material for CO2 Capture

November 2, 2022
Author(s)
Hayden Evans, Dinesh Mullangi, Zeyu Deng, Yuxiang Wang, Shing B. Peh, Fengxia Wei, John Wang, Craig Brown, Dan Zhao, Pieremanuele Canepa, Anthony K. Cheetham
A combination of gas adsorption and gas breakthrough measurements show that the metal-organic framework, Al(HCOO) 3 (ALF), which can be made inexpensively from commodity chemicals, exhibits excellent CO 2 adsorption capacities and outstanding CO 2/N 2

Lattice Dynamics in the NASICON NaZr 2 (PO 4 ) 3 Solid Electrolyte from Temperature-Dependent Neutron Diffraction, NMR, and Ab Initio Computational Studies

May 10, 2022
Author(s)
Emily Morgan, Hayden Evans, Kartik Pilar, Craig Brown, Raphaele Clement, Ryo Maezono, Ram Seshadri, Bartomeu Monserrat, Anthony Cheetham
Natrium super ionic conductor (NASICON) compounds form a rich and highly chemically-tunable family of crystalline materials that are of widespread interest because they include exemplars with high ionic conductivity, low thermal expansion, and redox

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

April 6, 2022
Author(s)
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 offer a promising path forward with exceptional compatibility against high-voltage oxide electrodes

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

November 29, 2021
Author(s)
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 2/3RE 1/3) 2AlC with RE = Nd, Gd, Tb, Dy, Ho and Er, and neutron diffraction on the series with RE ≠ Gd (a neutron absorber). By crossing information between the two techniques, we determine the

Neutron Scattering Studies of Materials for Hydrogen Storage

August 28, 2021
Author(s)
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 development of new candidate hydrogen storage materials is therefore an outstanding goal in the field of

Layered Double Perovskites

July 26, 2021
Author(s)
Hayden Evans, Lingling Mao, Ram Seshadri, Anthony K. Cheetham
Successful strategies for the design of crystalline materials with useful function are frequently based on the systematic tuning of chemical composition within a given structural family. Perovskites with the formula ABX 3, perhaps the best-known example of

Ambient-Temperature Hydrogen Storage via Vanadium(II)-Dihydrogen Complexation in a Metal-Organic Framework

April 28, 2021
Author(s)
David Jaramillo, Henry Jiang, Hayden Evans, Romit Chakraborty, Hiroyasu Furukawa, Craig Brown, Martin Head-Gordon, Jeffrey Long
The widespread implementation of H 2 as a fuel is currently hindered by the high pressures or cryogenic temperatures required to achieve reasonable storage densities. In contrast, the realization of materials that strongly and reversibly adsorb hydrogen at

Peritectic Phase Transition of Benzene and Acetonitrile into a Cocrystal Relevant to Titan, Saturn's Moon

November 14, 2020
Author(s)
Christina A. McConville, Yunwen Tao, Hayden Evans, Benjamin Trump, Jonathan B. Lefton, Wenqian Xu, Andrey A. Yakovenko, Elfi Kraka, Craig Brown, Tomce Runcevski
Benzene and acetonitrile are two of the most commonly used solvents found in almost every chemical laboratory. Titan, Saturn's icy moon, is one other place in the Solar system that has even larger amounts of these compounds, together with many other

Dynamics of Hydroxyl Anions Promotes Lithium Ion Conduction in Antiperovskite Li 2 OHCl

October 13, 2020
Author(s)
Fei Wang, Hayden Evans, Kwangnam Kim, Liang Yin, Yiliang Li, Ping-Chun Tsai, Jue Liu, Saul H. Lapidus, Craig Brown, Donald J. Siegel, Yet-Ming Chiang
Li 2OHCl is an exemplar of the anti-perovskite family of ionic conductors, for which high ionic conductivities have been reported, but in which the atomic-level mechanism of ion migration is unclear. The stable phase is highly defective, having 1/3 of the

Magnetic Properties of (Fe 1-x Mn x ) 2 AlB 2 and the Impact of Substitution on the Magnetocaloric Effect

August 6, 2020
Author(s)
D. Potashnikov, Elad Nisan NMN Caspi, A. Pesach, S. Kota, M. Sokol, L. A. Hanner, M. W. Barsoum, Hayden Evans, A. Eyal, A. Keren, O. Rivin
In this work, we investigate the magnetic structures of (Fe 1−xMn x) 2AlB 2 solid-solution quaternaries in the x = 0 to 1 range using X-ray and neutron diffraction, magnetization measurements, and mean field theory calculations. While Fe 2AlB 2 and Mn 2AlB

Perovskite-Related ReO 3 -Type Structures

March 1, 2020
Author(s)
Hayden A Evans, Yue Wu, Ram Seshadri, Anthony K. Cheetham
ReO 3-type structures can be described as ABX 3 perovskites in which the A-cation site is unoccupied. They therefore have the general composition BX 3, where B is normally a cation and X is a bridging anion. The chemical diversity of such structures is