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Qu J, Elgendy A, Cai R, Buckingham MA, Papaderakis AA, de Latour H, Hazeldine K, Whitehead GFS, Alam F, Smith CT, Binks DJ, Walton A, Skelton JM, Dryfe RAW, Haigh SJ, Lewis DJ. A Low-Temperature Synthetic Route Toward a High-Entropy 2D Hexernary Transition Metal Dichalcogenide for Hydrogen Evolution Electrocatalysis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204488. [PMID: 36951493 DOI: 10.1002/advs.202204488] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 02/09/2023] [Indexed: 05/18/2023]
Abstract
High-entropy (HE) metal chalcogenides are a class of materials that have great potential in applications such as thermoelectrics and electrocatalysis. Layered 2D transition-metal dichalcogenides (TMDCs) are a sub-class of high entropy metal chalcogenides that have received little attention to date as their preparation currently involves complicated, energy-intensive, or hazardous synthetic steps. To address this, a low-temperature (500 °C) and rapid (1 h) single source precursor approach is successfully adopted to synthesize the hexernary high-entropy metal disulfide (MoWReMnCr)S2 . (MoWReMnCr)S2 powders are characterized by powder X-ray diffraction (pXRD) and Raman spectroscopy, which confirmed that the material is comprised predominantly of a hexagonal phase. The surface oxidation states and elemental compositions are studied by X-ray photoelectron spectroscopy (XPS) whilst the bulk morphology and elemental stoichiometry with spatial distribution is determined by scanning electron microscopy (SEM) with elemental mapping information acquired from energy-dispersive X-ray (EDX) spectroscopy. The bulk, layered material is subsequently exfoliated to ultra-thin, several-layer 2D nanosheets by liquid-phase exfoliation (LPE). The resulting few-layer HE (MoWReMnCr)S2 nanosheets are found to contain a homogeneous elemental distribution of metals at the nanoscale by high angle annular dark field-scanning transmission electron microscopy (HAADF-STEM) with EDX mapping. Finally, (MoWReMnCr)S2 is demonstrated as a hydrogen evolution electrocatalyst and compared to 2H-MoS2 synthesized using the molecular precursor approach. (MoWReMnCr)S2 with 20% w/w of high-conductivity carbon black displays a low overpotential of 229 mV in 0.5 M H2 SO4 to reach a current density of 10 mA cm-2 , which is much lower than the overpotential of 362 mV for MoS2 . From density functional theory calculations, it is hypothesised that the enhanced catalytic activity is due to activation of the basal plane upon incorporation of other elements into the 2H-MoS2 structure, in particular, the first row TMs Cr and Mn.
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Affiliation(s)
- Jie Qu
- Department of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Amr Elgendy
- Department of Chemistry and Sir Henry Royce Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Rongsheng Cai
- Department of Materials, National Graphene Institute and Sir Henry Royce Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Mark A Buckingham
- Department of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Athanasios A Papaderakis
- Department of Chemistry and Sir Henry Royce Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Hugo de Latour
- Department of Materials, National Graphene Institute and Sir Henry Royce Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Kerry Hazeldine
- Department of Chemistry and the Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - George F S Whitehead
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Firoz Alam
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Charles T Smith
- Department of Physics and Astronomy and the Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - David J Binks
- Department of Physics and Astronomy and the Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Alex Walton
- Department of Chemistry and the Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Jonathan M Skelton
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Robert A W Dryfe
- Department of Chemistry and Sir Henry Royce Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Sarah J Haigh
- Department of Materials, National Graphene Institute and Sir Henry Royce Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - David J Lewis
- Department of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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2
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Deogratias G, Al-Qurashi OS, Wazzan N. Optical and electronic properties enhancement via chalcogenides: promising materials for DSSC applications. J Mol Model 2023; 29:86. [PMID: 36872384 DOI: 10.1007/s00894-023-05472-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 02/10/2023] [Indexed: 03/07/2023]
Abstract
CONTEXT Comparatively, metal-free sensitizers featuring the chalcogen family receive less attention despite known electronic properties for metal-chalcogenide materials. This work reports an array of optoelectronic properties using quantum chemical methods. Observed red-shifted bands within the UV/Vis to NIR regions with absorption maxima > 500 nm were consistent with increasing chalcogenide size. There is a monotonic down-shift in the LUMO and ESOP energy consistent with O 2p, S 3p, Se 4p, to Te 5p atomic orbital energies. Excited-state lifetime and charge injection free energies follow the decreasing order of chalcogenide electronegativity. Adsorption energies of dyes on TiO2 anatase (101) range between - 0.08 and - 0.77 eV. Based on evaluated properties, selenium- and tellurium-based materials show potential use in DSSCs and futuristic device applications. Therefore, this work motivates continued investigation of the chalcogenide sensitizers and their application. METHODS The geometry optimization was performed at B3LYP/6-31 + G(d,p) and B3LYP/LANL2DZ level of theory for lighter and heavier atoms, respectively, using Gaussian 09. The equilibrium geometries were confirmed by the absence of imaginary frequencies. Electronic spectra were obtained at CAM-B3LYP/6-31G + (d,p)/LANL2DZ level of theory. Adsorption energies for dyes on a 4 × 5 supercell TiO2 anatase (101) were obtained using VASP. The dye-TiO2 optimizations were employed using GGA and PBE with the PAW pseudo-potentials. The energy cutoff was set at 400 eV and convergence threshold for self-consistent iteration was set to 10-4, and van der Waals were accounted using DFT-D3 model and on-site Coulomb repulsion potential set at 8.5 eV for Ti.
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Affiliation(s)
- Geradius Deogratias
- Chemistry Department, College of Natural and Applied Sciences, University of Dar es Salaam, P.O. Box 35061, Dar es Salaam, Tanzania.
| | - Ohoud S Al-Qurashi
- Chemistry Department, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Nuha Wazzan
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
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3
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Shah SSA, Khan NA, Imran M, Rashid M, Tufail MK, Rehman AU, Balkourani G, Sohail M, Najam T, Tsiakaras P. Recent Advances in Transition Metal Tellurides (TMTs) and Phosphides (TMPs) for Hydrogen Evolution Electrocatalysis. MEMBRANES 2023; 13:113. [PMID: 36676920 PMCID: PMC9863077 DOI: 10.3390/membranes13010113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 01/03/2023] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
The hydrogen evolution reaction (HER) is a developing and promising technology to deliver clean energy using renewable sources. Presently, electrocatalytic water (H2O) splitting is one of the low-cost, affordable, and reliable industrial-scale effective hydrogen (H2) production methods. Nevertheless, the most active platinum (Pt) metal-based catalysts for the HER are subject to high cost and substandard stability. Therefore, a highly efficient, low-cost, and stable HER electrocatalyst is urgently desired to substitute Pt-based catalysts. Due to their low cost, outstanding stability, low overpotential, strong electronic interactions, excellent conductivity, more active sites, and abundance, transition metal tellurides (TMTs) and transition metal phosphides (TMPs) have emerged as promising electrocatalysts. This brief review focuses on the progress made over the past decade in the use of TMTs and TMPs for efficient green hydrogen production. Combining experimental and theoretical results, a detailed summary of their development is described. This review article aspires to provide the state-of-the-art guidelines and strategies for the design and development of new highly performing electrocatalysts for the upcoming energy conversion and storage electrochemical technologies.
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Affiliation(s)
- Syed Shoaib Ahmad Shah
- Department of Chemistry, School of Natural Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan
| | - Naseem Ahmad Khan
- Institute of Chemistry, the Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Muhammad Imran
- Institute of Chemistry, the Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Muhammad Rashid
- Institute of Chemistry, the Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | | | - Aziz ur Rehman
- Institute of Chemistry, the Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Georgia Balkourani
- Laboratory of Alternative Energy Conversion Systems, Department of Mechanical Engineering, School of Engineering, University of Thessaly, Pedion Areos, 38834 Volos, Greece
| | - Manzar Sohail
- Department of Chemistry, School of Natural Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan
| | - Tayyaba Najam
- Institute of Chemistry, the Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Panagiotis Tsiakaras
- Laboratory of Alternative Energy Conversion Systems, Department of Mechanical Engineering, School of Engineering, University of Thessaly, Pedion Areos, 38834 Volos, Greece
- Laboratory of Electrochemical Devices Based on Solid Oxide Proton Electrolytes, Institute of High Temperature Electrochemistry, RAS, 20 Akademicheskaya Str., Yekaterinburg 620990, Russia
- Laboratory of Materials and Devices for Electrochemical Power Engineering, Institute of Chemical Engineering, Ural Federal University, 19 Mira Str., Yekaterinburg 620002, Russia
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4
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Dual interfacial engineering of a Chevrel phase electrode material for stable hydrogen evolution at 2500 mA cm -2. Nat Commun 2022; 13:6382. [PMID: 36289229 PMCID: PMC9605970 DOI: 10.1038/s41467-022-34121-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 10/12/2022] [Indexed: 11/15/2022] Open
Abstract
Constructing stable electrodes which function over long timescales at large current density is essential for the industrial realization and implementation of water electrolysis. However, rapid gas bubble detachment at large current density usually results in peeling-off of electrocatalysts and performance degradation, especially for long term operations. Here we construct a mechanically-stable, all-metal, and highly active CuMo6S8/Cu electrode by in-situ reaction between MoS2 and Cu. The Chevrel phase electrode exhibits strong binding at the electrocatalyst-support interface with weak adhesion at electrocatalyst-bubble interface, in addition to fast hydrogen evolution and charge transfer kinetics. These features facilitate the achievement of large current density of 2500 mA cm−2 at a small overpotential of 334 mV which operate stably at 2500 mA cm−2 for over 100 h. In-situ total internal reflection imaging at micrometer level and mechanical tests disclose the relationships of two interfacial forces and performance of electrocatalysts. This dual interfacial engineering strategy can be extended to construct stable and high-performance electrodes for other gas-involving reactions. Stable electrodes which operate at large current density are essential for industrial water electrolysis. Here, a highly active Chevrel phase electrode is reported to achieve 2500 mA/cm−2 current density for 300 hours at small overpotentials.
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5
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Elgendy A, Papaderakis AA, Cai R, Polus K, Haigh SJ, Walton AS, Lewis DJ, Dryfe RAW. Nanocubes of Mo 6S 8 Chevrel phase as active electrode material for aqueous lithium-ion batteries. NANOSCALE 2022; 14:10125-10135. [PMID: 35792825 DOI: 10.1039/d2nr02014a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The development of intrinsically safe and environmentally sustainable energy storage devices is a significant challenge. Recent advances in aqueous rechargeable lithium-ion batteries (ARLIBs) have made considerable steps in this direction. In parallel to the ongoing progress in the design of aqueous electrolytes that expand the electrochemically stable potential window, the design of negative electrode materials exhibiting large capacity and low intercalation potential attracts great research interest. Herein, we report the synthesis of high purity nanoscale Chevrel Phase (CP) Mo6S8via a simple, efficient and controllable molecular precursor approach with significantly decreased energy consumption compared to the conventional approaches. Physical characterization of the obtained product confirms the successful formation of CP-Mo6S8 and reveals that it is crystalline nanostructured in nature. Due to their unique structural characteristics, the Mo6S8 nanocubes exhibit fast kinetics in a 21 m lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) electrolyte as a result of the shorter Li+ ion diffusion distance. Full battery cells comprised of Mo6S8 and LiMn2O4 as negative and positive electrode materials, respectively, operate at 2.23 V delivering a high energy density of 85 W h kg-1 (calculated on the total mass of active materials) under 0.2 C-rate. At 4 C, the coulombic efficiency (CE) is determined to be 99% increasing to near 100% at certain cycles. Post-mortem physical characterization demonstrates that the Mo6S8 anode maintained its crystallinity, thereby exhibiting outstanding cycling stability. The cell outperforms the commonly used vanadium-based (VO2 (B), V2O5) or (NASICON)-type LiTi2(PO4)3 anodes, highlighting the promising character of the nanoscale CP-Mo6S8 as a highly efficient anode material. In summary, the proposed synthetic strategy is expected to stimulate novel research towards the widespread application of CP-based materials in various aqueous and non-aqueous energy storage systems.
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Affiliation(s)
- Amr Elgendy
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Henry Royce Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
- Egyptian Petroleum Research Institute, 11727, Cairo, Egypt
| | - Athanasios A Papaderakis
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Henry Royce Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Rongsheng Cai
- Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
| | - Kacper Polus
- Photon Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Sarah J Haigh
- Henry Royce Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
- Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- National Graphene Institute, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Alex S Walton
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Photon Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - David J Lewis
- Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
| | - Robert A W Dryfe
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Henry Royce Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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6
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Hyler FP, Wuille Bille BA, Ortíz-Rodríguez JC, Sanz-Matias A, Roychoudhury S, Perryman JT, Patridge CJ, Singstock NR, Musgrave CB, Prendergast D, Velázquez JM. X-ray absorption spectroscopy insights on the structure anisotropy and charge transfer in Chevrel Phase chalcogenides. Phys Chem Chem Phys 2022; 24:17289-17294. [PMID: 35815404 DOI: 10.1039/d1cp04851a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electronic structure and local coordination of binary (Mo6T8) and ternary Chevrel Phases (MxMo6T8) are investigated for a range of metal intercalant and chalcogen compositions. We evaluate differences in the Mo L3-edge and K-edge X-ray absorption near edge structure across the suite of chalcogenides MxMo6T8 (M = Cu, Ni, x = 1-2, T = S, Se, Te), quantifying the effect of compositional and structural modification on electronic structure. Furthermore, we highlight the expansion, contraction, and anisotropy of Mo6 clusters within these Chevrel Phase frameworks through extended X-ray absorption fine structure analysis. Our results show that metal-to-cluster charge transfer upon intercalation is dominated by the chalcogen acceptors, evidenced by significant changes in their respective X-ray absorption spectra in comparison to relatively unaffected Mo cations. These results explain the effects of metal intercalation on the electronic and local structure of Chevrel Phases across various chalcogen compositions, and aid in rationalizing electron distribution within the structure.
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Affiliation(s)
- Forrest P Hyler
- Department of Chemistry, University of California, One Shields Avenue, Davis, California, 95616, USA.
| | - Brian A Wuille Bille
- Department of Chemistry, University of California, One Shields Avenue, Davis, California, 95616, USA.
| | - Jessica C Ortíz-Rodríguez
- Department of Chemistry, University of California, One Shields Avenue, Davis, California, 95616, USA.
| | - Ana Sanz-Matias
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California, 94720, USA. .,Joint Center for Energy Storage Research, Lawrence Berkeley National Laboratory, Berkeley, California, 94720, USA
| | - Subhayan Roychoudhury
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California, 94720, USA.
| | - Joseph T Perryman
- Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California, 94305, USA
| | - Christopher J Patridge
- Department of Chemistry, D'Youville College, 320 Porter Avenue, Buffalo, New York, 14201, USA
| | - Nicholas R Singstock
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, USA
| | - Charles B Musgrave
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, USA
| | - David Prendergast
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California, 94720, USA.
| | - Jesús M Velázquez
- Department of Chemistry, University of California, One Shields Avenue, Davis, California, 95616, USA.
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7
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Singstock NR, Musgrave CB. How the Bioinspired Fe 2Mo 6S 8 Chevrel Breaks Electrocatalytic Nitrogen Reduction Scaling Relations. J Am Chem Soc 2022; 144:12800-12806. [PMID: 35816127 DOI: 10.1021/jacs.2c03661] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The nitrogen reduction reaction (NRR) is a renewable alternative to the energy- and CO2-intensive Haber-Bosch NH3 synthesis process but is severely limited by the low activity and selectivity of studied electrocatalysts. The Chevrel phase Fe2Mo6S8 has a surface Fe-S-Mo coordination environment that mimics the nitrogenase FeMo-cofactor and was recently shown to provide state-of-the-art activity and selectivity for NRR. Here, we elucidate the previously unknown NRR mechanism on Fe2Mo6S8 via grand-canonical density functional theory (GC-DFT) that realistically models solvated and biased surfaces. Fe sites of Fe2Mo6S8 selectively stabilize the key *NNH intermediate via a narrow band of free-atom-like surface d-states that selectively hybridize with p-states of *NNH, which results in Fe sites breaking NRR scaling relationships. These sharp d-states arise from an Fe-S bond dissociation during N2 adsorption that mimics the mechanism of the nitrogenase FeMo-cofactor. Furthermore, we developed a new GC-DFT-based approach for calculating transition states as a function of bias (GC-NEB) and applied it to produce a microkinetic model for NRR at Fe2Mo6S8 that predicts high activity and selectivity, in close agreement with experiments. Our results suggest new design principles that may identify effective NRR electrocatalysts that minimize the barriers for *N2 protonation and *NH3 desorption and that may be broadly applied to the rational discovery of stable, multinary electrocatalysts for other reactions where narrow bands of surface d-states can be tuned to selectively stabilize key reaction intermediates and guide selectivity toward a target product. Furthermore, our results highlight the importance of using GC-DFT and GC-NEB to accurately model electrocatalytic reactions.
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Affiliation(s)
- Nicholas R Singstock
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Charles B Musgrave
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States.,Materials Science and Engineering Program, University of Colorado Boulder, Boulder, Colorado 80303, United States.,Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States
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8
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Hill CM, Mendoza-Cortes JL, Velázquez JM, Whittaker-Brooks L. Multi-dimensional designer catalysts for negative emissions science (NES): bridging the gap between synthesis, simulations, and analysis. iScience 2022; 25:103700. [PMID: 35036879 PMCID: PMC8749188 DOI: 10.1016/j.isci.2021.103700] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Negative emissions technologies will play a critical role in limiting global warming to sustainable levels. Electrocatalytic and/or photocatalytic CO2 reduction will likely play an important role in this field moving forward, but efficient, selective catalyst materials are needed to enable the widespread adoption of these processes. The rational design of such materials is highly challenging, however, due to the complexity of the reactions involved as well as the large number of structural variables which can influence behavior at heterogeneous interfaces. Currently, there is a significant disconnect between the complexity of materials systems that can be handled experimentally and those that can be modeled theoretically with appropriate rigor and bridging these gaps would greatly accelerate advancements in the field of Negative Emissions Science (NES). Here, we present a perspective on how these gaps between materials design/synthesis, characterization, and theory can be resolved, enabling the rational development of improved materials for CO2 conversion and other NES applications.
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Affiliation(s)
- Caleb M. Hill
- Department of Chemistry, University of Wyoming, 1000 E University Avenue, Laramie, WY 82071, USA
| | - Jose L. Mendoza-Cortes
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing, MI 48824, USA
| | - Jesús M. Velázquez
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA
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9
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Ortiz-Rodríguez JC, Perryman JT, Velázquez JM. Charge Transport Dynamics in Microwave Synthesized One-Dimensional Molybdenum Chalcogenides. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jessica C. Ortiz-Rodríguez
- Department of Chemistry, University of California Davis, One Shields Avenue, Davis, California 95616, United States
| | - Joseph T. Perryman
- Department of Chemistry, University of California Davis, One Shields Avenue, Davis, California 95616, United States
| | - Jesús M. Velázquez
- Department of Chemistry, University of California Davis, One Shields Avenue, Davis, California 95616, United States
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10
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Singstock NR, Ortiz-Rodríguez JC, Perryman JT, Sutton C, Velázquez JM, Musgrave CB. Machine Learning Guided Synthesis of Multinary Chevrel Phase Chalcogenides. J Am Chem Soc 2021; 143:9113-9122. [PMID: 34107683 DOI: 10.1021/jacs.1c02971] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The Chevrel phase (CP) is a class of molybdenum chalcogenides that exhibit compelling properties for next-generation battery materials, electrocatalysts, and other energy applications. Despite their promise, CPs are underexplored, with only ∼100 compounds synthesized to date due to the challenge of identifying synthesizable phases. We present an interpretable machine-learned descriptor (Hδ) that rapidly and accurately estimates decomposition enthalpy (ΔHd) to assess CP stability. To develop Hδ, we first used density functional theory to compute ΔHd for 438 CP compositions. We then generated >560 000 descriptors with the new machine learning method SIFT, which provides an easy-to-use approach for developing accurate and interpretable chemical models. From a set of >200 000 compositions, we identified 48 501 CPs that Hδ predicts are synthesizable based on the criterion that ΔHd < 65 meV/atom, which was obtained as a statistical boundary from 67 experimentally synthesized CPs. The set of candidate CPs includes 2307 CP tellurides, an underexplored CP subset with a predicted preference for channel site occupation by cation intercalants that is rare among CPs. We successfully synthesized five of five novel CP tellurides attempted from this set and confirmed their preference for channel site occupation. Our joint computational and experimental approach for developing and validating screening tools that enable the rapid identification of synthesizable materials within a sparse class is likely transferable to other materials families to accelerate their discovery.
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Affiliation(s)
- Nicholas R Singstock
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | | | - Joseph T Perryman
- Department of Chemistry, University of California Davis, Davis, California 95616, United States
| | - Christopher Sutton
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Jesús M Velázquez
- Department of Chemistry, University of California Davis, Davis, California 95616, United States
| | - Charles B Musgrave
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States.,Materials Science and Engineering Program, University of Colorado Boulder, Boulder, Colorado 80303, United States.,Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States
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11
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Giuffredi G, Asset T, Liu Y, Atanassov P, Di Fonzo F. Transition Metal Chalcogenides as a Versatile and Tunable Platform for Catalytic CO 2 and N 2 Electroreduction. ACS MATERIALS AU 2021; 1:6-36. [PMID: 36855615 PMCID: PMC9888655 DOI: 10.1021/acsmaterialsau.1c00006] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Group VI transition metal chalcogenides are the subject of increasing research interest for various electrochemical applications such as low-temperature water electrolysis, batteries, and supercapacitors due to their high activity, chemical stability, and the strong correlation between structure and electrochemical properties. Particularly appealing is their utilization as electrocatalysts for the synthesis of energy vectors and value-added chemicals such as C-based chemicals from the CO2 reduction reaction (CO2R) or ammonia from the nitrogen fixation reaction (NRR). This review discusses the role of structural and electronic properties of transition metal chalcogenides in enhancing selectivity and activity toward these two key reduction reactions. First, we discuss the morphological and electronic structure of these compounds, outlining design strategies to control and fine-tune them. Then, we discuss the role of the active sites and the strategies developed to enhance the activity of transition metal chalcogenide-based catalysts in the framework of CO2R and NRR against the parasitic hydrogen evolution reaction (HER); leveraging on the design rules applied for HER applications, we discuss their future perspective for the applications in CO2R and NRR. For these two reactions, we comprehensively review recent progress in unveiling reaction mechanisms at different sites and the most effective strategies for fabricating catalysts that, by exploiting the structural and electronic peculiarities of transition metal chalcogenides, can outperform many metallic compounds. Transition metal chalcogenides outperform state-of-the-art catalysts for CO2 to CO reduction in ionic liquids due to the favorable CO2 adsorption on the metal edge sites, whereas the basal sites, due to their conformation, represent an appealing design space for reduction of CO2 to complex carbon products. For the NRR instead, the resemblance of transition metal chalcogenides to the active centers of nitrogenase enzymes represents a powerful nature-mimicking approach for the design of catalysts with enhanced performance, although strategies to hinder the HER must be integrated in the catalytic architecture.
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Affiliation(s)
- Giorgio Giuffredi
- Center
for Nano Science and Technology, Istituto
Italiano di Tecnologia (IIT@Polimi), Via Pascoli 70/3, 20133 Milano, Italy,Department
of Energy, Politecnico di Milano, Via Lambruschini 4, 20156 Milano, Italy
| | - Tristan Asset
- Department
of Chemical & Biomolecular Engineering and National Fuel Cell
Research Center, University of California, Irvine, California 92697-2580, United States
| | - Yuanchao Liu
- Department
of Chemical & Biomolecular Engineering and National Fuel Cell
Research Center, University of California, Irvine, California 92697-2580, United States
| | - Plamen Atanassov
- Department
of Chemical & Biomolecular Engineering and National Fuel Cell
Research Center, University of California, Irvine, California 92697-2580, United States
| | - Fabio Di Fonzo
- Center
for Nano Science and Technology, Istituto
Italiano di Tecnologia (IIT@Polimi), Via Pascoli 70/3, 20133 Milano, Italy,
| |
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