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A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Arunkumar JAYAKUMAR

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 325-338 doi: 10.1007/s11708-019-0618-y

Abstract: The crucial and expensive component involved in it is the gas diffusion electrode (GDE) and its degradation

Keywords： PEM fuel cell     gas diffusion electrode(GDE)     gas diffusion layer(GDL)     membrane electrode assembly     durability    

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Preparation of a Pb loaded gas diffusion electrode and its application to CO

Ang LI, Hua WANG, Jinyu HAN, Li LIU

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 381-388 doi: 10.1007/s11705-012-1216-2

Abstract: A Pb loaded gas diffusion electrode was fabricated and used for the electroreduction of CO to formicThe preparation conditions of the gas diffusion electrode were optimized by adjusting the amounts ofpolytetrafluoroethylene (PTFE) in the gas diffusion layer and acetylene black in the catalytic layer.The electrochemical performance of the as-prepared gas diffusion electrode was studied by chronoamperometryThe optimized gas diffusion electrode showed good catalytic performance for the electroreduction of CO

Keywords： electroreduction     carbon dioxide     lead catalyst     gas diffusion electrode     formic acid    

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Transient process of methane-oxygen diffusion flame-street establishment in a microchannel

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 988-999 doi: 10.1007/s11708-021-0755-y

Abstract: “Flame-street” is an interesting diffusion flame behavior in which a series of flame-segments is separatelydistributed along the mixing layer in a narrow channel.In the present paper, the dynamic formation process of a methane-oxygen diffusion flame-street structureflame shape/type change from a tribrachial structure in its fast-propagating phase to a long, trailing diffusionMoreover, chemical insights for the premixed and diffusion branches of the leading flame were also provided

Keywords： micro-combustion     flame-street     diffusion flame     mixing layer     flame propagation speed    

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Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 471-476 doi: 10.1007/s11705-011-1130-z

Abstract: The magnetohydrodynamic (MHD) boundary layer slip flow and solute transfer over a porous plate in theOn the other hand, with an increase in the magnetic field and mass suction, both boundary layer thicknesses

Keywords： slip flow     MHD boundary layer     reactive solute diffusion     flat plate     suction/injection    

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DOW CORNING 1-2577 Conformal Coating as an efficient diffusion material for cathode in the microbial

Yanping HOU, Haiping LUO, Guangli LIU, Renduo ZHANG, Yong LUO, Bangyu QIN, Shanshan CHEN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 4,   Pages 526-530 doi: 10.1007/s11783-013-0532-1

Abstract: In this study, DOW CORNING 1-2577 Conformal Coating was proposed for the cathode diffusion layer of thelayer and two poly (dimethylsiloxane) (PDMS)/carbon diffusion layers and carbon cloth cathode with fourlayer produced the maximum power density of 1585±52 mW·m , compared with those using poly (tetrafluoroethylene) (PTFE) diffusion layers (1421±45 mW·m ) and poly (dimethylsiloxane) (PDMS)/carbon diffusion layersThe DOW CORNING 1-2577 Conformal Coating could be an alternative for the diffusion layer construction

Keywords： microbial fuel cell     diffusion layer     power density     DOW CORNING1-2577 Conformal Coating    

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Predictive calculations of gas solubility and permeability in glassy polymeric membranes: An overview

Matteo Minelli, Maria Grazia De Angelis, Giulio C. Sarti

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 405-413 doi: 10.1007/s11705-017-1615-5

Abstract: For gas and vapor solubility, the comparison with direct experimental data for mixed gases points outFor gas and vapor permeability, the comparison with direct experimental data shows the possibility to

Keywords： solubility     permeability     glassy polymers     NELF model     diffusion    

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Study on the gas permeabilities in styrene-butadiene rubber by molecular dynamics simulation

Hailu LIU, Xuejia DING, Jun YI, Liqun ZHANG, Sizhu WU,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 257-262 doi: 10.1007/s11705-009-0270-x

Abstract: this research, molecular dynamics (MD)simulations were used to study the transport properties of small gasThe diffusion coefficients were obtained from MD (NVT ensemble) and the relationship between gas permeabilityThe results indicated that the diffusion coefficient of oxygen declined with increasing styrene contentIt was concluded that diffusion coefficient increased as the FFV increases, which is in accordance with

Keywords： diffusion     atomistic simulation     permeability     chemical structure     relationship    

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Atomistic simulations for adsorption and separation of flue gas in MFI zeolite and MFI/MCM-41 micro/mesoporous

Shengchi ZHUO, Yongmin HUANG, Jun HU, Honglai LIU

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 264-273 doi: 10.1007/s11705-010-1007-6

Abstract: Adsorption of pure CO and N and separation of CO /N mixture in MFI zeolite and MFI/MCM-41 micro/mesoporous composite have been studied by using atomistic simulations. Fully atomistic models of MFI and MFI/MCM-41 are constructed and characterized. A bimodal pore size distribution is observed in MFI/MCM-41 from simulated small- and broad-angle X-ray diffraction patterns. The density of MFI/MCM-41 is lower than MFI, while its free volume and specific surface area are greater than MFI due to the presence of mesopores. CO is preferentially adsorbed than N , and thus, the loading and isosteric heat of CO are greater than N in both MFI and MFI/MCM-41. CO isotherm in MFI/MCM-41 is similar to that in MFI at low pressures, but resembles that in MCM-41 at high pressures. N shows similar amount of loading in MFI, MCM-41 and MFI/MCM-41. The selectivity of CO over N in the three adsorbents decreases in the order of MFI>MFI/MCM-41>MCM-41. With increasing pressure, the selectivity increases in MFI and MFI/MCM-41, but decreases in MCM-41. The self-diffusivity of CO and N in MFI decreases as loading increases, while in MFI/MCM-41, it first increases and then drops.

Keywords： adsorption     diffusion     CO2     flue gas     zeolite     micro/mesoporous composite    

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Numerical simulation of three-dimensional gas/liquid two-phase flow in a proton exchange membrane fuel

ZHUGE Weilin, ZHANG Yangjun, LAO Xingsheng, CHEN Xiao, MING Pingwen

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 305-310 doi: 10.1007/s11708-007-0044-4

Abstract: A three-dimensional gas/liquid two-phase flow and heat transfer model is developed based on the multiphaseThe reactant gas flow, diffusion, and chemical reaction as well as the liquid water transport and phaseperformance decreases quickly at high current density due to the obstruction of liquid water to oxygen diffusion

Keywords： diffusion     gas/liquid two-phase     management     exchange     transfer    

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Coupled diffusion of chloride and other ions in saturated concrete

Nattapong DAMRONGWIRIYANUPAP, Linyuan LI, Yunping XI

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 267-277 doi: 10.1007/s11709-011-0112-z

Abstract: The diffusion of chloride ions is associated and strongly affected by other ions in the pore solutionstructures was mathematically characterized by the Nernst-Planck equation which considered not only diffusionThe material models of chloride binding capacity and chloride diffusion coefficient were incorporated

Keywords： diffusion     chloride     concrete     Nernst-Planck equation     durability    

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Experimental study of humid air reverse diffusion combustion in a turbulent flow field

GE Bing, ZANG Shusheng, GU Xin

Frontiers in Energy 2007, Volume 1, Issue 4,   Pages 428-434 doi: 10.1007/s11708-007-0062-6

Abstract: Experiments were performed to investigate the differences between the propane/air turbulent diffusionreactive flows past bluff-body and the propane/humid air turbulent diffusion reactive flows in the same

Keywords： propane/humid     propane/air turbulent     bluff-body     turbulent diffusion    

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evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Frontiers of Medicine 2014, Volume 8, Issue 4,   Pages 471-476 doi: 10.1007/s11684-014-0365-8

Abstract:

This work aims to estimate the value of diffusion weighted imaging (DWI) and diffusion tensor imagingDWI and DTI scans were performed on bilateral kidney using SE single-shot EPI, and apparent diffusion

Keywords： type 2 diabetes mellitus     microalbuminuria     diffusion weighted imaging     diffusion tensor imaging     early-stage    

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Molecular diffusion in ternary poly(vinyl alcohol) solutions

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 1003-1016 doi: 10.1007/s11705-021-2121-3

Abstract: The diffusion kinetics of a molecular probe—rhodamine B—in ternary aqueous solutions containing poly(We show that the diffusion characteristics of rhodamine B in such complex systems is determined by aThe presence of glycerol has no noticeable impact on rhodamine B diffusion at low concentration, butsignificantly slows down the diffusion of rhodamine B above 3.9% (w/v) due to a dominating steric inhibitionFurthermore, introducing surfactants (cationic/nonionic/anionic) to the system results in a decreased diffusion

Keywords： fluorescence correlation spectroscopy     poly(vinyl alcohol)     anomalous diffusion     crowding effects     dynamic    

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Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 373-383 doi: 10.1007/s11705-020-1949-2

Abstract: The effect of internal diffusion on char gasification with CO in the temperature range from 1123 K toThe results revealed that the effect of internal diffusion on the initial reaction rate was more significantThus, temperature zones corresponding to chemical reaction and diffusion control were identified.Moreover, the calculated effectiveness factor provided a quantitative estimation of internal diffusion

Keywords： coal char     CO2 gasification     internal diffusion     pore evolution    

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Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 637-648 doi: 10.1007/s11709-023-0902-0

Abstract: In this study, the chloride ion diffusion and deformation properties of recycled concrete after carbonizationthe performance of the recycled aggregates and reduces their porosity, thereby reducing the chloride diffusion

Keywords： recycled concrete     carbonated recycled coarse aggregate     biaxial compression     chloride diffusion     stress    

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Title Author Date Type Operation

A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Arunkumar JAYAKUMAR

Journal Article

Preparation of a Pb loaded gas diffusion electrode and its application to CO

Ang LI, Hua WANG, Jinyu HAN, Li LIU

Journal Article

Transient process of methane-oxygen diffusion flame-street establishment in a microchannel

Journal Article

Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

Journal Article

DOW CORNING 1-2577 Conformal Coating as an efficient diffusion material for cathode in the microbial

Yanping HOU, Haiping LUO, Guangli LIU, Renduo ZHANG, Yong LUO, Bangyu QIN, Shanshan CHEN

Journal Article

Predictive calculations of gas solubility and permeability in glassy polymeric membranes: An overview

Matteo Minelli, Maria Grazia De Angelis, Giulio C. Sarti

Journal Article

Study on the gas permeabilities in styrene-butadiene rubber by molecular dynamics simulation

Hailu LIU, Xuejia DING, Jun YI, Liqun ZHANG, Sizhu WU,

Journal Article

Atomistic simulations for adsorption and separation of flue gas in MFI zeolite and MFI/MCM-41 micro/mesoporous

Shengchi ZHUO, Yongmin HUANG, Jun HU, Honglai LIU

Journal Article

Numerical simulation of three-dimensional gas/liquid two-phase flow in a proton exchange membrane fuel

ZHUGE Weilin, ZHANG Yangjun, LAO Xingsheng, CHEN Xiao, MING Pingwen

Journal Article

Coupled diffusion of chloride and other ions in saturated concrete

Nattapong DAMRONGWIRIYANUPAP, Linyuan LI, Yunping XI

Journal Article

Experimental study of humid air reverse diffusion combustion in a turbulent flow field

GE Bing, ZANG Shusheng, GU Xin

Journal Article

evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Journal Article

Molecular diffusion in ternary poly(vinyl alcohol) solutions

Journal Article

Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Journal Article

Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Journal Article