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Electrochemical characterization methods of the key materials for SOFC

Fan Liquan,Zhao Erqing and Gao Keqing

Strategic Study of CAE 2013, Volume 15, Issue 2,   Pages 50-56

Abstract:

Solid oxide fuel cells (SOFCs) are the solid-state devices for generating electricity from the chemical energy. The effect of solid oxide materials on the performance of SOFC is especially important. From the influence of materials on electrochemical performance of SOFC, this paper summarizes electrochemical characterization methods for the composition materials of SOFC briefly based on the fundamentals of electrochemistry and solid electrochemistry. Some research experience is also included in the paper, which can facilitate the further research of materials.

Keywords： solid oxide materials     direct current polarization     alternating current impedance     solid oxide fuel cell    

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Preparation and influence of performance of anodic catalysts for direct methanol fuel cell

WANG Zhenbo, YIN Geping, SHI Pengfei

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 20-25 doi: 10.1007/s11705-007-0005-9

Abstract: The direct methanol fuel cell s (DMFC) anodic catalysts, Pt-Ru/C, were prepared by chemical reductionTheir performance was tested by cyclic voltammetry and potentiostatic polarization by utilizing their

Keywords： catalyst prepared     stability     ascension     potentiostatic polarization     platinum-ruthenium    

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Influence of direct electric current on wetting behavior during brazing

Kirsten BOBZIN, Wolfgang WIETHEGER, Julian HEBING, Lidong ZHAO, Alexander SCHMIDT, Riza ISKANDAR, Joachim MAYER

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 496-503 doi: 10.1007/s11465-019-0582-6

Abstract: Therefore, the effect of direct electric current along the surface of a steel substrate on the wettingBy applying direct current up to = 60 A the wetted surface area could be increased and the spreadingof the molten filler metal could be controlled in dependence of the polarity of the electric currentTo evaluate the influence of the electric current on the phase formation subsequent selective electron

Keywords： brazing     electric current assisted wetting     Lorentz force    

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Influence of the intensity and loading time of direct current electric field on the directional migration

Xiaoyu Wang,Yuxuan Gao,Haigang Shi,Na Liu,Wei Zhang,Hongbo Li

Frontiers of Medicine 2016, Volume 10, Issue 3,   Pages 286-296 doi: 10.1007/s11684-016-0456-9

Abstract: aimed to determine the following: (1) the direction of rat BMSC (rBMSC) migration upon exposure to a directcurrent electric field (DCEF), (2) the optimal DCEF intensity and duration, and (3) the possible regulatory

Keywords： DCEF     migration     osteogenesis differentiation     rBMSCs     SDF-1/CXCR-4    

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Development and advances in modular multilevel converter based HVDC projects in China

Frontiers of Engineering Management   Pages 183-189 doi: 10.1007/s42524-022-0248-7

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Keywords： high voltage direct current     power converter     power systems     renewable energy     ultra-high voltage    

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Spin polarization strategy to deploy proton resource over atomic-level metal sites for highly selective

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1772-1781 doi: 10.1007/s11705-022-2197-4

Abstract: suppress H2 evolution, benefiting from the magnetic-proximity-induced exchange splitting (spin polarization

Keywords： CO2 electrolysis     single-atom catalysts     spin polarization     proton dynamics     in situ   

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Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials

Linxiang WANG, Roderick MELNIK, Fuzai LV

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 287-291 doi: 10.1007/s11465-011-0230-2

Abstract: In the current paper, a macroscopic differential model is constructed for the coupled hysteretic dynamicsHysteresis loops associated with stress induced polarization switching and butterfly-shaped behavior

Keywords： differential model     state space     electromechanical switching     butterfly effects     hysteresis    

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Impact of selection of DC base values and DC link control strategies on sequential AC-DC power-flow convergence

Shagufta KHAN,Suman BHOWMICK

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 399-412 doi: 10.1007/s11708-015-0374-6

Abstract: This paper demonstrates the convergence of the integrated AC-DC power-flow algorithm as affected by the selection of different base values for the DC quantities and adoption of different control strategies for the DC link. For power-flow modeling of integrated AC-DC systems, the base values of the various DC quantities can be defined in several ways, giving rise to different sets of per-unit system equations. It is observed that different per-unit system models affect the convergence of the power-flow algorithm differently. In a similar manner, the control strategy adopted for the DC link also affects the power-flow convergence. The sequential method is used to solve the DC variables in the Newton Raphson (NR) power flow model, where AC and DC systems are solved separately and are coupled by injecting an equivalent amount of real and reactive power at the terminal AC buses. Now, for a majority of the possible control strategies, the equivalent real and reactive power injections at the concerned buses can be computed a-priori and are independent of the NR iterative loop. However, for a few of the control strategies, the equivalent reactive power injections cannot be computed a-priori and need to be computed in every NR iteration. This affects the performance of the iterative process. Two different per-unit system models and six typical control strategies are taken into consideration. This is validated by numerous case studies conducted on the IEEE 118-bus and 300-bus test systems.

Keywords： AC-DC power-flow     Newton-Raphson method     high voltage direct current (HVDC) control strategy    

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Dynamic modulation performance of ferroelectric liquid crystal polarization rotators and Mueller matrix

Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 256-264 doi: 10.1007/s11465-019-0573-7

Abstract: A ferroelectric liquid crystal polarization rotator (FLCPR) has been widely used in polarization measurementadvantages of the high modulation frequency of FLCPR and the ultrahigh temporal resolution of the fast polarization

Keywords： ferroelectric liquid crystal polarization rotator (FLCPR)     dual liquid crystal Mueller matrix polarizer    

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Additive direct-write microfabrication for MEMS: A review

Kwok Siong TEH

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 490-509 doi: 10.1007/s11465-017-0484-4

Abstract:

Direct-write additive manufacturing refers to a rich and growing repertoire of well-established fabricationAt the macroscale, direct-write techniques such as stereolithography, selective laser sintering, fusedWith current direct-write additive manufacturing technologies, it is possible to fabricate unsophisticatedImportantly, direct-write additive manufacturing could appreciably augment current MEMS fabrication technologiesThis article aims to provide a limited review of the current landscape of direct-write additive manufacturing

Keywords： direct-write     additive manufacturing     microfabrication     MEMS    

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Kinetics of enhanced adsorption by polarization for organic pollutants on activated carbon fiber

HAN Yanhe, QUAN Xie, ZHAO Huimin, CHEN Shuo, ZHAO Yazhi

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 83-88 doi: 10.1007/s11783-007-0016-2

Abstract: The adsorption kinetics for model pollutants on activated carbon fiber (ACF) by polarization was investigatedKinetics data obtained for the adsorption of these model pollutants at open-circuit, 400 mV, and -400 mV polarizationWith the anodic polarization of 400 mV, the capacity of sodium phenoxide was increased from 0.0083 mmolAnodic polarization enhances the adsorption of benzene with the electron-donating group.But whether anodic or not, cathodal polarization had less effect on the adsorption of electron-accepting

Keywords： ACF     activated     17-fold enhancement     donor-conjugate bridge-acceptor     Electrostatic interaction    

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Spontaneous polarization enhanced bismuth ferrate photoelectrode: fabrication and boosted photoelectrochemical

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 781-790 doi: 10.1007/s11708-021-0782-8

Abstract: As a result, the ferroelectric spontaneous polarization unit arranges itself in the space in a periodicmanner, leading to the formation of a polarization field along a special direction.

Keywords： bismuth ferrate     ferroelectric polarisation     photoelectrochemical (PEC) water splitting     graphene oxide (GO)     high orientation    

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Extreme Engineering: Polarization in Product Development and Manufacturing

Andrew Kusiak

Engineering 2021, Volume 7, Issue 3,   Pages 282-284 doi: 10.1016/j.eng.2020.01.012

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Regulation of radicals by hydrogen-donor solvent in direct coal liquefaction

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1689-1699 doi: 10.1007/s11705-022-2186-7

Abstract: Radicals are important intermediates in direct coal liquefaction.

Keywords： direct coal liquefaction     hydrogen-donor solvent     induced pyrolysis     radical mechanism     density functional    

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Direct acting antiviral-induced dynamic reduction of serum

Tung Huynh, Ke-Qin Hu

Frontiers of Medicine 2019, Volume 13, Issue 6,   Pages 658-666 doi: 10.1007/s11684-019-0707-7

Abstract: Direct acting antiviral (DAA) treatments may reduce the elevated α fetoprotein (AFP), but data on how

Keywords： chronic hepatitis C     α fetoprotein     direct acting antiviral treatment     cirrhosis    

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Title Author Date Type Operation

Electrochemical characterization methods of the key materials for SOFC

Fan Liquan,Zhao Erqing and Gao Keqing

Journal Article

Preparation and influence of performance of anodic catalysts for direct methanol fuel cell

WANG Zhenbo, YIN Geping, SHI Pengfei

Journal Article

Influence of direct electric current on wetting behavior during brazing

Kirsten BOBZIN, Wolfgang WIETHEGER, Julian HEBING, Lidong ZHAO, Alexander SCHMIDT, Riza ISKANDAR, Joachim MAYER

Journal Article

Influence of the intensity and loading time of direct current electric field on the directional migration

Xiaoyu Wang,Yuxuan Gao,Haigang Shi,Na Liu,Wei Zhang,Hongbo Li

Journal Article

Development and advances in modular multilevel converter based HVDC projects in China

Journal Article

Spin polarization strategy to deploy proton resource over atomic-level metal sites for highly selective

Journal Article

Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials

Linxiang WANG, Roderick MELNIK, Fuzai LV

Journal Article

Impact of selection of DC base values and DC link control strategies on sequential AC-DC power-flow convergence

Shagufta KHAN,Suman BHOWMICK

Journal Article

Dynamic modulation performance of ferroelectric liquid crystal polarization rotators and Mueller matrix

Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU

Journal Article

Additive direct-write microfabrication for MEMS: A review

Kwok Siong TEH

Journal Article

Kinetics of enhanced adsorption by polarization for organic pollutants on activated carbon fiber

HAN Yanhe, QUAN Xie, ZHAO Huimin, CHEN Shuo, ZHAO Yazhi

Journal Article

Spontaneous polarization enhanced bismuth ferrate photoelectrode: fabrication and boosted photoelectrochemical

Journal Article

Extreme Engineering: Polarization in Product Development and Manufacturing

Andrew Kusiak

Journal Article

Regulation of radicals by hydrogen-donor solvent in direct coal liquefaction

Journal Article

Direct acting antiviral-induced dynamic reduction of serum

Tung Huynh, Ke-Qin Hu

Journal Article