1
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Novel Connectivity Tensor for a Systematic Assessment of Topology and Anisotropy of Real Membranes and Microporous Structures. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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2
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Laser structuring of graphite anodes and NMC cathodes – Proportionate influence on electrode characteristics and cell performance. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139002] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Dai H, Xu W, Hu Z, Gu J, Chen Y, Guo R, Zhang G, Wei W. High-Voltage Cathode α-Fe 2O 3 Nanoceramics for Rechargeable Sodium-Ion Batteries. ACS OMEGA 2021; 6:12615-12622. [PMID: 34056412 PMCID: PMC8154118 DOI: 10.1021/acsomega.1c00640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 04/26/2021] [Indexed: 06/12/2023]
Abstract
Previously, α-Fe2O3 nanocrystals are recognized as anode materials owing to their high capacity and multiple properties. Now, this work provides high-voltage α-Fe2O3 nanoceramics cathodes fabricated by the solvothermal and calcination processes for sodium-ion batteries (SIBs). Then, their structure and electrical conductivity were investigated by the first-principles calculations. Also, the SIB with the α-Fe2O3 nanoceramics cathode exhibits a high initial charge-specific capacity of 692.5 mA h g-1 from 2.0 to 4.5 V at a current density of 25 mA g-1. After 800 cycles, the discharge capacity is still 201.8 mA h g-1, well exceeding the one associated with the present-state high-voltage SIB. Furthermore, the effect of the porous structure of the α-Fe2O3 nanoceramics on sodium ion transport and cyclability is investigated. This reveals that α-Fe2O3 nanoceramics will be a remarkably promising low-cost and pollution-free high-voltage cathode candidate for high-voltage SIBs.
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Affiliation(s)
- Hanqing Dai
- Institute
of Future Lighting, Academy for Engineering and Technology, Institute
for Electric Light Sources, Fudan University, Shanghai 200433, China
| | - Wenqian Xu
- College
of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
| | - Zhe Hu
- Institute
of Future Lighting, Academy for Engineering and Technology, Institute
for Electric Light Sources, Fudan University, Shanghai 200433, China
| | - Jing Gu
- College
of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
| | - Yuanyuan Chen
- Institute
of Future Lighting, Academy for Engineering and Technology, Institute
for Electric Light Sources, Fudan University, Shanghai 200433, China
| | - Ruiqian Guo
- Institute
of Future Lighting, Academy for Engineering and Technology, Institute
for Electric Light Sources, Fudan University, Shanghai 200433, China
| | - Guoqi Zhang
- Department
of Microelectronics, Delft University of
Technology, Delft 2628 CD, Netherlands
| | - Wei Wei
- College
of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
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4
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Vorauer T, Kumar P, Berhaut CL, Chamasemani FF, Jouneau PH, Aradilla D, Tardif S, Pouget S, Fuchsbichler B, Helfen L, Atalay S, Widanage WD, Koller S, Lyonnard S, Brunner R. Multi-scale quantification and modeling of aged nanostructured silicon-based composite anodes. Commun Chem 2020; 3:141. [PMID: 36703381 PMCID: PMC9814897 DOI: 10.1038/s42004-020-00386-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 09/16/2020] [Indexed: 01/29/2023] Open
Abstract
Advanced anode material designs utilizing dual phase alloy systems like Si/FeSi2 nano-composites show great potential to decrease the capacity degrading and improve the cycling capability for Lithium (Li)-ion batteries. Here, we present a multi-scale characterization approach to understand the (de-)lithiation and irreversible volumetric changes of the amorphous silicon (a-Si)/crystalline iron-silicide (c-FeSi2) nanoscale phase and its evolution due to cycling, as well as their impact on the proximate pore network. Scattering and 2D/3D imaging techniques are applied to probe the anode structural ageing from nm to μm length scales, after up to 300 charge-discharge cycles, and combined with modeling using the collected image data as an input. We obtain a quantified insight into the inhomogeneous lithiation of the active material induced by the morphology changes due to cycling. The electrochemical performance of Li-ion batteries does not only depend on the active material used, but also on the architecture of its proximity.
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Affiliation(s)
- Thomas Vorauer
- grid.474102.40000 0000 8788 3619Materials Center Leoben Forschung GmbH, A8700 Leoben, Austria
| | - Praveen Kumar
- grid.457348.9University of Grenoble Alpes, CEA, IRIG-MEM, Grenoble, 38000 France
| | - Christopher L. Berhaut
- grid.457348.9University of Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble, 38000 France
| | | | - Pierre-Henri Jouneau
- grid.457348.9University of Grenoble Alpes, CEA, IRIG-MEM, Grenoble, 38000 France
| | - David Aradilla
- grid.457348.9University of Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble, 38000 France
| | - Samuel Tardif
- grid.457348.9University of Grenoble Alpes, CEA, IRIG-MEM, Grenoble, 38000 France
| | - Stephanie Pouget
- grid.457348.9University of Grenoble Alpes, CEA, IRIG-MEM, Grenoble, 38000 France
| | - Bernd Fuchsbichler
- grid.451441.10000 0004 4659 8159Varta Micro Innovation GmbH, A8010 Graz, Austria
| | - Lukas Helfen
- grid.7892.40000 0001 0075 5874Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany ,grid.156520.50000 0004 0647 2236Institut Laue–Langevin, CS 20156, 38042 Grenoble Cedex 9, France
| | - Selcuk Atalay
- grid.7372.10000 0000 8809 1613WMG, University of Warwick, Coventry, CV4 7AL UK
| | | | - Stefan Koller
- grid.451441.10000 0004 4659 8159Varta Micro Innovation GmbH, A8010 Graz, Austria
| | - Sandrine Lyonnard
- grid.457348.9University of Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble, 38000 France
| | - Roland Brunner
- grid.474102.40000 0000 8788 3619Materials Center Leoben Forschung GmbH, A8700 Leoben, Austria
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5
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Geometrical and Topological Analysis of Pore Space in Sandstones Based on X-ray Computed Tomography. ENERGIES 2020. [DOI: 10.3390/en13153774] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The pore geometry and topology properties of pore space in rocks are significant for a better understanding of the complex hydrologic and elastic properties. However, geometry and topology information about the sandstone pore structures is not fully available. In this study, we obtained the topological and geometrical pore parameters from a representative elementary volume (REV) for fluid flow in sandstone samples. For comparison, eight types of sandstones with various porosities were studied based on the X-ray micro-computed tomography technique. In this study, the REV size was selected based on the parameters from the respective pore network models (PNM), not just the porosity. Our analysis indicates that despite different porosity, all the sandstone samples have highly triangular-shaped pores and a high degree of pore structural isotropy. The high porosity group sandstones exhibit wider ranges of pore sizes than the low porosity group sandstones. Compared to the high porosity group sandstones, the low porosity group sandstones samples showing a higher global aspect ratio, indicating some pores exist in the form of bottlenecks. The pore topological properties of different sandstones show a high dependence of the porosity. The high porosity group sandstones obtain large coordination numbers, large connectivity densities and low tortuosities. The results from this study will help better understand the complex pore structure and the fluid flow in sandstone.
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6
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Griffin E, Mogg L, Hao GP, Kalon G, Bacaksiz C, Lopez-Polin G, Zhou TY, Guarochico V, Cai J, Neumann C, Winter A, Mohn M, Lee JH, Lin J, Kaiser U, Grigorieva IV, Suenaga K, Özyilmaz B, Cheng HM, Ren W, Turchanin A, Peeters FM, Geim AK, Lozada-Hidalgo M. Proton and Li-Ion Permeation through Graphene with Eight-Atom-Ring Defects. ACS NANO 2020; 14:7280-7286. [PMID: 32427466 DOI: 10.1021/acsnano.0c02496] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Defect-free graphene is impermeable to gases and liquids but highly permeable to thermal protons. Atomic-scale defects such as vacancies, grain boundaries, and Stone-Wales defects are predicted to enhance graphene's proton permeability and may even allow small ions through, whereas larger species such as gas molecules should remain blocked. These expectations have so far remained untested in experiment. Here, we show that atomically thin carbon films with a high density of atomic-scale defects continue blocking all molecular transport, but their proton permeability becomes ∼1000 times higher than that of defect-free graphene. Lithium ions can also permeate through such disordered graphene. The enhanced proton and ion permeability is attributed to a high density of eight-carbon-atom rings. The latter pose approximately twice lower energy barriers for incoming protons compared to that of the six-atom rings of graphene and a relatively low barrier of ∼0.6 eV for Li ions. Our findings suggest that disordered graphene could be of interest as membranes and protective barriers in various Li-ion and hydrogen technologies.
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Affiliation(s)
- Eoin Griffin
- Department of Physics and Astronomy & National Graphene Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Lucas Mogg
- Department of Physics and Astronomy & National Graphene Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Guang-Ping Hao
- Department of Physics and Astronomy & National Graphene Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Gopinadhan Kalon
- Department of Physics and Astronomy & National Graphene Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
- Department of Physics, Indian Institute of Technology Gandhinagar, Gujarat 382355, India
| | - Cihan Bacaksiz
- Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Guillermo Lopez-Polin
- Department of Physics and Astronomy & National Graphene Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - T Y Zhou
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Victor Guarochico
- Department of Physics and Astronomy & National Graphene Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Junhao Cai
- Department of Physics and Astronomy & National Graphene Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Christof Neumann
- Institute of Physical Chemistry and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Andreas Winter
- Institute of Physical Chemistry and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Michael Mohn
- Central Facility for Electron Microscopy, Electron Microscopy Group of Materials Science, Ulm University, Ulm 89081, Germany
| | - Jong Hak Lee
- Department of Physics, Department of Materials Science and Engineering & Centre for Advanced 2D Materials, National University of Singapore, Singapore 119260
| | - Junhao Lin
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan & Department of Mechanical Engineering, The University of Tokyo, Bunkyo City, Tokyo 100-8921, Japan
- Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ute Kaiser
- Central Facility for Electron Microscopy, Electron Microscopy Group of Materials Science, Ulm University, Ulm 89081, Germany
| | - Irina V Grigorieva
- Department of Physics and Astronomy & National Graphene Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Kazu Suenaga
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan & Department of Mechanical Engineering, The University of Tokyo, Bunkyo City, Tokyo 100-8921, Japan
| | - Barbaros Özyilmaz
- Department of Physics, Department of Materials Science and Engineering & Centre for Advanced 2D Materials, National University of Singapore, Singapore 119260
| | - Hui-Min Cheng
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
- Shenzhen Graphene Center, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, China
| | - Wencai Ren
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Andrey Turchanin
- Institute of Physical Chemistry and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Francois M Peeters
- Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Andre K Geim
- Department of Physics and Astronomy & National Graphene Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Marcelo Lozada-Hidalgo
- Department of Physics and Astronomy & National Graphene Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
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7
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Abstract
New experimental technology and theoretical approaches have advanced battery research across length scales ranging from the molecular to the macroscopic. Direct observations of nanoscale phenomena and atomistic simulations have enhanced the understanding of the fundamental electrochemical processes that occur in battery materials. This vast and ever-growing pool of microscopic data brings with it the challenge of isolating crucial performance-decisive physical parameters, an effort that often requires the consideration of intricate interactions across very different length scales and timescales. Effective physics-based battery modeling emphasizes the cross-scale perspective, with the aim of showing how nanoscale physicochemical phenomena affect device performance. This review surveys the methods researchers have used to bridge the gap between the nanoscale and the macroscale. We highlight the modeling of properties or phenomena that have direct and considerable impact on battery performance metrics, such as open-circuit voltage and charge/discharge overpotentials. Particular emphasis is given to thermodynamically rigorous multiphysics models that incorporate coupling between materials' mechanical and electrochemical states.
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Affiliation(s)
- Guanchen Li
- Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, United Kingdom; .,The Faraday Institution, Harwell Campus, Didcot OX11 0RA, United Kingdom
| | - Charles W Monroe
- Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, United Kingdom; .,The Faraday Institution, Harwell Campus, Didcot OX11 0RA, United Kingdom
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8
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Schultze-Jena A, Boon M, de Winter D, Bussmann P, Janssen A, van der Padt A. Predicting intraparticle diffusivity as function of stationary phase characteristics in preparative chromatography. J Chromatogr A 2020; 1613:460688. [DOI: 10.1016/j.chroma.2019.460688] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 11/04/2019] [Accepted: 11/06/2019] [Indexed: 10/25/2022]
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9
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Rodríguez J, Palmas S, Sánchez-Molina M, Amores E, Mais L, Campana R. Simple and Precise Approach for Determination of Ohmic Contribution of Diaphragms in Alkaline Water Electrolysis. MEMBRANES 2019; 9:membranes9100129. [PMID: 31590320 PMCID: PMC6835761 DOI: 10.3390/membranes9100129] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 09/26/2019] [Accepted: 10/02/2019] [Indexed: 11/16/2022]
Abstract
A simple and low-cost alternating current (AC)-based method, without electrolyte correction, is proposed (Electrochemical Impedance Spectroscopy (EIS)-Zero Gap Cell) for the determination of ohmic contribution of diaphragms. The effectiveness of the proposed methodology was evaluated by using a commercial Alkaline Water Electrolysis (AWE) diaphragm (Zirfon®). Furthermore, the results were compared with two conventional electrochemical methodologies for calculating the separator resistance, based on direct current (DC), and AC measurements, respectively. Compared with the previous techniques, the proposed approach reported more accurate and precise values of resistance for new and aged samples. Compared with the manufacturer reference, the obtained error values for new samples were 0.33%, 5.64%, and 41.7%, respectively for EIS-Zero gap cell, AC and DC methods, confirming the validity and convenience of the proposed technique.
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Affiliation(s)
- Jesús Rodríguez
- Centro Nacional del Hidrógeno (CNH2). Prolongación Fernando El Santo s/n, 13500 Puertollano, Ciudad Real, Spain.
| | - Simonetta Palmas
- Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Università degli studi di Cagliari, Via Marengo 2, 09123 Cagliari, Italy.
| | - Margarita Sánchez-Molina
- Centro Nacional del Hidrógeno (CNH2). Prolongación Fernando El Santo s/n, 13500 Puertollano, Ciudad Real, Spain.
| | - Ernesto Amores
- Centro Nacional del Hidrógeno (CNH2). Prolongación Fernando El Santo s/n, 13500 Puertollano, Ciudad Real, Spain.
| | - Laura Mais
- Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Università degli studi di Cagliari, Via Marengo 2, 09123 Cagliari, Italy.
| | - Roberto Campana
- Centro Nacional del Hidrógeno (CNH2). Prolongación Fernando El Santo s/n, 13500 Puertollano, Ciudad Real, Spain.
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10
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Zhang D, Bertei A, Tariq F, Brandon N, Cai Q. Progress in 3D electrode microstructure modelling for fuel cells and batteries: transport and electrochemical performance. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/2516-1083/ab38c7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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Elverfeldt CP, Lee YJ, Fröba M. Selective Control of Ion Transport by Nanoconfinement: Ionic Liquid in Mesoporous Resorcinol-Formaldehyde Monolith. ACS APPLIED MATERIALS & INTERFACES 2019; 11:24423-24434. [PMID: 31188560 DOI: 10.1021/acsami.9b06445] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Thermal and dynamic properties of ionic liquid (IL)-based electrolytic solution (Li+TFSI- in Pyr13+TFSI-; 1-methyl-1-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide = Pyr13+TFSI-) confined in nanoporous polymer hosts were investigated with respect to the pore size/porosity and the surface chemistry of the polymer host. As host material, mesoporous resorcinol-formaldehyde (RF) polymer monoliths with three-dimensionally connected pore structure were prepared, with precise control of the pore size ranging from ca. 7 to 60 nm. Thermal analysis of RF polymer-ionic liquid composites showed stability up to almost 400 °C and a melting point depression proportional to the inverse of the pore diameter. Good ionic conductivity comparable to that of a commercial separator is obtained, which is dependent on the porosity (i.e., pore volume) of the confining host material (i.e., the number of charge carriers available in the system). Further pulsed field gradient (PFG) NMR experiments revealed that the diffusion coefficient of Pyr13+ cation becomes smaller than that of TFSI- anion inside RF pores, which is contradictory to the bulk IL system. This change in the ionic motion is due to electrostatic attraction between the pore walls and Pyr13+ cations, resulting in a layer structure composed of a Pyr13+ cation-rich layer adsorbed at the pore wall surface and a TFSI- anion-enriched bulklike layer at the pore center. Our study suggests that transport characteristics of the ions of interest can be controlled by optimizing the surface chemistry of the host framework and their motion can be separately monitored by PFG NMR spectroscopy.
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Affiliation(s)
- Carl-Philipp Elverfeldt
- Institute of Inorganic and Applied Chemistry , University of Hamburg , Martin-Luther-King-Platz 6 , 20146 Hamburg , Germany
| | - Young Joo Lee
- Institute of Inorganic and Applied Chemistry , University of Hamburg , Martin-Luther-King-Platz 6 , 20146 Hamburg , Germany
| | - Michael Fröba
- Institute of Inorganic and Applied Chemistry , University of Hamburg , Martin-Luther-King-Platz 6 , 20146 Hamburg , Germany
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12
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Tortuosity and connectivity evaluation by CFD simulation for morphological characterization of membranes and catalytic structures. Case study: CaF2-like structure. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2018.09.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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A Novel Connectivity Factor for Morphological Characterization of Membranes and Porous Media: A Simulation Study on Structures of Mono-Sized Spherical Particles. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8040573] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Chen JH, Le TTM, Hsu KC. Application of PolyHIPE Membrane with Tricaprylmethylammonium Chloride for Cr(VI) Ion Separation: Parameters and Mechanism of Transport Relating to the Pore Structure. MEMBRANES 2018; 8:membranes8010011. [PMID: 29498709 PMCID: PMC5872193 DOI: 10.3390/membranes8010011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 02/27/2018] [Accepted: 02/28/2018] [Indexed: 11/16/2022]
Abstract
The structural characteristics of membrane support directly affect the performance of carrier facilitated transport membrane. A highly porous PolyHIPE impregnated with Aliquat 336 is proposed for Cr(VI) separation. PolyHIPE consisting of poly(styrene-co-2-ethylhexyl acrylate) copolymer crosslinked with divinylbenzene has the pore structure characteristic of large pore spaces interconnected with small window throats. The unique pore structure provides the membrane with high flux and stability. The experimental results indicate that the effective diffusion coefficient D* of Cr(VI) through Aliquat 336/PolyHIPE membrane is as high as 1.75 × 10−11 m2 s−1. Transport study shows that the diffusion of Cr(VI) through Aliquat 336/PolyHIPE membrane can be attributed to the jumping transport mechanism. The hydraulic stability experiment shows that the membrane is quite stable, with recovery rates remaining at 95%, even after 10 consecutive cycles of operation. The separation study demonstrates the potential application of this new type of membrane for Cr(VI) recovery.
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Affiliation(s)
- Jyh-Herng Chen
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, 1, Section 3, Chung-Hsiao East Road, Taipei 10608, Taiwan.
| | - Thi Tuyet Mai Le
- College of Engineering, National Taipei University of Technology, 1, Section 3, Chung-Hsiao East Road, Taipei 10608, Taiwan.
| | - Kai-Chung Hsu
- College of Engineering, National Taipei University of Technology, 1, Section 3, Chung-Hsiao East Road, Taipei 10608, Taiwan.
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15
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Reich SJ, Svidrytski A, Hlushkou D, Stoeckel D, Kübel C, Höltzel A, Tallarek U. Hindrance Factor Expression for Diffusion in Random Mesoporous Adsorbents Obtained from Pore-Scale Simulations in Physical Reconstructions. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b04840] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Stefan-Johannes Reich
- Department
of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Artur Svidrytski
- Department
of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Dzmitry Hlushkou
- Department
of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Daniela Stoeckel
- Department
of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
- Institute of Physical Chemistry, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 58, 35392 Gießen, Germany
| | - Christian Kübel
- Institute
of Nanotechnology and Karlsruhe Nano Micro Facility, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Alexandra Höltzel
- Department
of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Ulrich Tallarek
- Department
of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
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16
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Wang J, Reyna-Valencia A, Favis BD. Continuity, morphology and surface resistivity in binary blends of poly(ether-block-amide) with polyethylene and polystyrene. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.03.062] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Ledesma-Durán A, Hernández SI, Santamaría-Holek I. Relation between the porosity and tortuosity of a membrane formed by disconnected irregular pores and the spatial diffusion coefficient of the Fick-Jacobs model. Phys Rev E 2017; 95:052804. [PMID: 28618600 DOI: 10.1103/physreve.95.052804] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Indexed: 11/07/2022]
Abstract
In this work, we provide a theoretical relationship between the spatial-dependent diffusion coefficient derived in the Fick-Jacobs (FJ) approximation and the macroscopic diffusion coefficient of a membrane that depends on the porosity, tortuosity, and the constriction factors. Based on simple mass conservation arguments under equilibrium as well as in nonequilibrium conditions, we generalize previous expressions for the effective diffusion coefficient of an irregular pore, originally obtained by Festa and d'Agliano for horizontal and periodic pores, and then extended by Bradley for tortuous periodic pores, to the case of pores with arbitrary geometry. Through a formal definition of the constrictivity factor in terms of the geometry of the pore, our results provide very clear physical interpretation of experimental measurements since they link the local properties of the flow with macroscopic quantities of experimental relevance in the design and optimization of porous materials. The macroscopic diffusion coefficient as well as the spatiotemporal evolution of the concentration profiles inside a pore have been recently measured by using pulse field gradient NMR techniques. The advantage of using the FJ approach is that the spatiotemporal concentration profile inside a pore of irregular geometry is directly related to the pore's shape and, therefore, that the macroscopic diffusion coefficient can be obtained by comparing the spatiotemporal concentration profiles from such experiments with those of the theoretical model. Hence, the present study is relevant for the understanding of the transport properties of porous materials where the shape and arrangement of pores can be controlled at will.
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Affiliation(s)
- Aldo Ledesma-Durán
- Unidad Multidiscliplinaria de Docencia e Investigación-Juriquilla, Facultad de Ciencias, Universidad Nacional Autónoma de México, CP 76230, Juriquilla, Querétaro, Mexico
| | - S I Hernández
- Unidad Multidiscliplinaria de Docencia e Investigación-Juriquilla, Facultad de Ciencias, Universidad Nacional Autónoma de México, CP 76230, Juriquilla, Querétaro, Mexico
| | - Iván Santamaría-Holek
- Unidad Multidiscliplinaria de Docencia e Investigación-Juriquilla, Facultad de Ciencias, Universidad Nacional Autónoma de México, CP 76230, Juriquilla, Querétaro, Mexico
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18
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Sharp rise in resistance of ion exchange membranes in low concentration NaCl solution. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.01.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Microstructure-property relationships in a gas diffusion layer (GDL) for Polymer Electrolyte Fuel Cells, Part I: effect of compression and anisotropy of dry GDL. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.01.030] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Wang J, Reyna-Valencia A, Favis BD. Assembling Conductive PEBA Copolymer at the Continuous Interface in Ternary Polymer Systems: Morphology and Resistivity. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00469] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jun Wang
- CREPEC,
Department of Chemical Engineering, École Polytechnique de Montréal, Montréal, Québec H3T 1J4, Canada
| | | | - Basil D. Favis
- CREPEC,
Department of Chemical Engineering, École Polytechnique de Montréal, Montréal, Québec H3T 1J4, Canada
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21
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Stenzel O, Pecho O, Holzer L, Neumann M, Schmidt V. Predicting effective conductivities based on geometric microstructure characteristics. AIChE J 2016. [DOI: 10.1002/aic.15160] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ole Stenzel
- Institute of Computational Physics, ZHAW Winterthur; 8400 Winterthur Switzerland
| | - Omar Pecho
- Institute of Computational Physics, ZHAW Winterthur; 8400 Winterthur Switzerland
| | - Lorenz Holzer
- Institute of Computational Physics, ZHAW Winterthur; 8400 Winterthur Switzerland
| | | | - Volker Schmidt
- Institute of Stochastics, Ulm University; 89069 Ulm Germany
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22
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3D Microstructure Effects in Ni-YSZ Anodes: Prediction of Effective Transport Properties and Optimization of Redox Stability. MATERIALS 2015; 8:5554-5585. [PMID: 28793523 PMCID: PMC5512617 DOI: 10.3390/ma8095265] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 08/04/2015] [Accepted: 08/13/2015] [Indexed: 11/18/2022]
Abstract
This study investigates the influence of microstructure on the effective ionic and electrical conductivities of Ni-YSZ (yttria-stabilized zirconia) anodes. Fine, medium, and coarse microstructures are exposed to redox cycling at 950 °C. FIB (focused ion beam)-tomography and image analysis are used to quantify the effective (connected) volume fraction (Φeff), constriction factor (β), and tortuosity (τ). The effective conductivity (σeff) is described as the product of intrinsic conductivity (σ0) and the so-called microstructure-factor (M): σeff = σ0 × M. Two different methods are used to evaluate the M-factor: (1) by prediction using a recently established relationship, Mpred = εβ0.36/τ5.17, and (2) by numerical simulation that provides conductivity, from which the simulated M-factor can be deduced (Msim). Both methods give complementary and consistent information about the effective transport properties and the redox degradation mechanism. The initial microstructure has a strong influence on effective conductivities and their degradation. Finer anodes have higher initial conductivities but undergo more intensive Ni coarsening. Coarser anodes have a more stable Ni phase but exhibit lower YSZ stability due to lower sintering activity. Consequently, in order to improve redox stability, it is proposed to use mixtures of fine and coarse powders in different proportions for functional anode and current collector layers.
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23
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Chen D, Wang H, Zhang S, Tade MO, Shao Z, Chen H. Multiscale model for solid oxide fuel cell with electrode containing mixed conducting material. AIChE J 2015. [DOI: 10.1002/aic.14881] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Daifen Chen
- School of Energy and Power Engineering, Jiangsu University of Science and Technology; Zhenjiang 212003 China
- Dept. of Chemical Engineering; Curtin University; WA 6845 Australia
| | - Hanzhi Wang
- School of Energy and Power Engineering, Jiangsu University of Science and Technology; Zhenjiang 212003 China
| | - Shundong Zhang
- School of Energy and Power Engineering, Jiangsu University of Science and Technology; Zhenjiang 212003 China
| | - Moses O. Tade
- Dept. of Chemical Engineering; Curtin University; WA 6845 Australia
| | - Zongping Shao
- Dept. of Chemical Engineering; Curtin University; WA 6845 Australia
| | - Huili Chen
- Dept. of Chemical Engineering; Curtin University; WA 6845 Australia
- Institute of Molecular Science, Shanxi University; Taiyuan 030006 China
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Roth CJ, Ehrl A, Becher T, Frerichs I, Schittny JC, Weiler N, Wall WA. Correlation between alveolar ventilation and electrical properties of lung parenchyma. Physiol Meas 2015; 36:1211-26. [DOI: 10.1088/0967-3334/36/6/1211] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Bertei A, Mertens J, Nicolella C. Electrochemical Simulation of Planar Solid Oxide Fuel Cells with Detailed Microstructural Modeling. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.08.120] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Effect of Electrochemical Cell Design on the Ionic Conductivity and Oxygen Permeability Determination of Gas Separators. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.02.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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27
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Gaiselmann G, Neumann M, Schmidt V, Pecho O, Hocker T, Holzer L. Quantitative relationships between microstructure and effective transport properties based on virtual materials testing. AIChE J 2014. [DOI: 10.1002/aic.14416] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | | | - Volker Schmidt
- Institute of Stochastics; Ulm University; Ulm 89069 Germany
| | - Omar Pecho
- Institute of Computational Physics, ZHAW Winterthur; Winterthur 8400 Switzerland
- Institute for Building Materials, ETH Zurich; Zurich 8093 Switzerland
| | - Thomas Hocker
- Institute of Computational Physics, ZHAW Winterthur; Winterthur 8400 Switzerland
| | - Lorenz Holzer
- Institute of Computational Physics, ZHAW Winterthur; Winterthur 8400 Switzerland
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