355 results found
Balcombe P, Anderson K, Speirs J, et al., 2017, The Natural Gas Supply Chain: The Importance of Methane and Carbon Dioxide Emissions, ACS SUSTAINABLE CHEMISTRY & ENGINEERING, Vol: 5, Pages: 3-20, ISSN: 2168-0485
Bertei A, Ruiz-Trejo E, Kareh K, et al., 2017, The fractal nature of the three-phase boundary: A heuristic approach to the degradation of nanostructured solid oxide fuel cell anodes, NANO ENERGY, Vol: 38, Pages: 526-536, ISSN: 2211-2855
Bertei A, Tariq F, Yufit V, et al., 2017, Guidelines for the Rational Design and Engineering of 3D Manufactured Solid Oxide Fuel Cell Composite Electrodes, JOURNAL OF THE ELECTROCHEMICAL SOCIETY, Vol: 164, Pages: F89-F98, ISSN: 0013-4651
Biton M, Tariq F, Yufit V, et al., 2017, Integrating multi-length scale high resolution 3D imaging and modelling in the characterisation and identification of mechanical failure sites in electrochemical dendrites, Acta Materialia, Vol: 141, Pages: 39-46, ISSN: 1359-6454
© 2017 Acta Materialia Inc. The Zn-air battery system is attractive because of its potentially high power density, environmental compatibility and low-cost materials . This paper is focused on understanding the degradation of Zn air batteries, in particular the evolution of Zn dendrites, one of the main degradation mechanisms. Complementary tomographic techniques allow the direct 3D imaging and characterisation of complex microstructures, including the observation and quantification of dendrite growth. Here we present results from 3D x-ray and FIB-SEM tomography of Zn dendrite formation in a zinc-air battery, down to resolutions of tens of nanometers, enabling analysis of complex micro-structures. This approach is shown to be effective in understanding how electrochemical dendrites grow, and demonstrates that tomography coupled with modelling can provide new insights into dendrite growth in electrochemical systems.
Biton M, Yufit V, Tariq F, et al., 2017, Enhanced Imaging of Lithium Ion Battery Electrode Materials, JOURNAL OF THE ELECTROCHEMICAL SOCIETY, Vol: 164, Pages: A6032-A6038, ISSN: 0013-4651
Brandon NP, Kurban Z, 2017, Clean energy and the hydrogen economy, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 375, ISSN: 1364-503X
Chakrabarti B, Nir D, Yufit V, et al., 2017, Performance Enhancement of Reduced Graphene Oxide-Modified Carbon Electrodes for Vanadium Redox-Flow Systems, CHEMELECTROCHEM, Vol: 4, Pages: 194-200, ISSN: 2196-0216
Chen J, Ruiz-Trejo E, Atkinson A, et al., 2017, Microstructural and electrochemical characterisation of degradation in nickel impregnated scandia-stabilised zirconia electrode during isothermal annealing, Pages: 1125-1137, ISSN: 1938-5862
© The Electrochemical Society. In this study, we examine the degradation of nickel impregnated scandia-stabilised zirconia (ScSZ) electrode in wet hydrogen at a working temperature of SOFCs. Continuous van der Pauw measurement was carried out when the electrode was aged at 650oC in an atmosphere with 5 vol% hydrogen and 95 vol% nitrogen. A fall in sheet conductivity was found in the electrode during ageing within 1000 min. Electrochemical impedance spectra were collected at a constant time intervals during isothermal annealing at 650oC, 800oC and 950oC for the impregnated electrode, at open circuit. Three resistance contributions were decoupled by equivalent circuit fitting, i.e. the ohmic resistance, the anodic reaction resistance, and the gas diffusion resistance. Secondary electron images of electrodes before and after ageing showed an increase in nickel particle size and a decrease in the number of particles, providing microstructural evidence of coarsening. Nickel coarsening was identified as the main mechanism of degradation for the electrode in wet hydrogen.
Chen Z, Wang X, Brandon N, et al., 2017, Analysis of spherical indentation of porous ceramic films, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 37, Pages: 1031-1038, ISSN: 0955-2219
Chen Z, Wang X, Brandon N, et al., 2017, Spherical indentation of bilayer ceramic structures: Dense layer on porous substrate, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 37, Pages: 4763-4772, ISSN: 0955-2219
Cooper SJ, brandon NP, 2017, Solid Oxide Fuel Cell Lifetime and Reliability, Solid Oxide Fuel Cell Lifetime and Reliability Critical Challenges in Fuel Cells, Editors: Ruiz-Trejo, BOLDRIN, Publisher: Academic Press, Pages: 1-15, ISBN: 9780128097243
For its holistic approach, this book can be used both as an introduction to these issues and a reference resource for all involved in research and application of solid oxide fuel cells, especially those developing understanding in ...
Jais AA, Ali SAM, Anwar M, et al., 2017, Enhanced ionic conductivity of scandia-ceria-stabilized-zirconia (10Sc1CeSZ) electrolyte synthesized by the microwave-assisted glycine nitrate process, CERAMICS INTERNATIONAL, Vol: 43, Pages: 8119-8125, ISSN: 0272-8842
Jamil Z, Ruiz-Trejo E, Brandon NP, 2017, Nickel Electrodeposition on Silver for the Development of Solid Oxide Fuel Cell Anodes and Catalytic Membranes, JOURNAL OF THE ELECTROCHEMICAL SOCIETY, Vol: 164, Pages: D210-D217, ISSN: 0013-4651
Jing R, Wang M, Brandon N, et al., 2017, Multi-criteria evaluation of solid oxide fuel cell based combined cooling heating and power (SOFC-CCHP) applications for public buildings in China, Energy, Vol: 141, Pages: 273-289, ISSN: 0360-5442
© 2017 Elsevier Ltd This study aims to evaluate the feasibility of solid oxide fuel cell based combined cooling heating and power (SOFC-CCHP) applications in public buildings of China from different perspectives. Operations of the natural gas fueled SOFC-CCHP systems for 20 years’ have been simulated for five categories of public buildings in five locations of China. Parallel simulations of combustion based CCHP systems and conventional system have been conducted for comparison. By single criterion assessment, SOFC-CCHP systems demonstrate outstanding performance on energy efficiency as well as reducing carbon emission, air pollution and human health damage cost. The levelized cost of energy (LCOE) turns out to be competitive with commercial electricity price, but a long payback period (SPP) has also been identified. To further assess the overall performance of SOFC-CCHP systems, a multi-criteria assessment model has been developed by combining the gray relational analysis (GRA) approach and the entropy-weighting method. The result indicates that hospital, hotel, and supermarket achieve more benefits than office and school; warmer regions rank slightly higher than colder regions. In addition, sensitivity analysis has been performed on SPP and LCOE. Overall, this paper provides theoretical guidance and evaluation approach for SOFC-CCHP demonstrations in China.
Liu X, Wu B, Brandon N, et al., 2017, Tough Ionogel-in-Mask Hybrid Gel Electrolytes in Supercapacitors with Durable Pressure and Thermal Tolerances, ENERGY TECHNOLOGY, Vol: 5, Pages: 220-224, ISSN: 2194-4288
Ouyang M, Boldrin P, Brandon NP, 2017, Methane pulse study on nickel impregnated gadolinium doped ceria, Pages: 1353-1366, ISSN: 1938-5862
© The Electrochemical Society. Ni/CGO was prepared via impregnation. A facile methane pulse experiment was performed on Ni/CGO under SOFC operating condition. The outlet gas was monitored by a quadrupole mass spectrometer. A Van-Mars Krevelen type mechanism was proposed for methane reaction on Ni/CGO and analyzed in detail. The method showed promising prospect in analyzing mechanism of hydrocarbon oxidation and the results provide a new insight in the strategy of preventing carbon deposition on nickel catalyst when operating as a SOFC anode materials.
Ruiz-Trejo E, Puolamaa M, Sum B, et al., 2017, New Method for the Deposition of Nickel Oxide in Porous Scaffolds for Electrodes in Solid Oxide Fuel Cells and Electrolyzers, CHEMSUSCHEM, Vol: 10, Pages: 258-265, ISSN: 1864-5631
Somalu MR, Muchtar A, Brandon NP, 2017, Properties of screen-printed nickel/scandia-stabilized-zirconia anodes fabricated using rheologically optimized inks during redox cycles, JOURNAL OF MATERIALS SCIENCE, Vol: 52, Pages: 7175-7185, ISSN: 0022-2461
Somalu MR, Muchtar A, Daud WRW, et al., 2017, Screen-printing inks for the fabrication of solid oxide fuel cell films: A review, RENEWABLE & SUSTAINABLE ENERGY REVIEWS, Vol: 75, Pages: 426-439, ISSN: 1364-0321
Bahadori L, Hashim MA, Manan NSA, et al., 2016, Investigation of Ammonium- and Phosphonium-Based Deep Eutectic Solvents as Electrolytes for a Non-Aqueous All-Vanadium Redox Cell, JOURNAL OF THE ELECTROCHEMICAL SOCIETY, Vol: 163, Pages: A632-A638, ISSN: 0013-4651
Bertei A, Ruiz-Trejo E, Tariq F, et al., 2016, Validation of a physically-based solid oxide fuel cell anode model combining 3D tomography and impedance spectroscopy, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, Vol: 41, Pages: 22381-22393, ISSN: 0360-3199
Blanga R, Berman M, Biton M, et al., 2016, Peculiarities of ion transport in confined-in-ceramics concentrated polymer electrolytes, ELECTROCHIMICA ACTA, Vol: 208, Pages: 71-79, ISSN: 0013-4686
Boldrin P, Ruiz-Trejo E, Mermelstein J, et al., 2016, Strategies for Carbon and Sulfur Tolerant Solid Oxide Fuel Cell Materials, Incorporating Lessons from Heterogeneous Catalysis, CHEMICAL REVIEWS, Vol: 116, Pages: 13633-13684, ISSN: 0009-2665
Chen Z, Brandon N, 2016, Inkjet printing and nanoindentation of porous alumina multilayers, CERAMICS INTERNATIONAL, Vol: 42, Pages: 8316-8324, ISSN: 0272-8842
Chen Z, Wang X, Atkinson A, et al., 2016, Spherical indentation of porous ceramics: Elasticity and hardness, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 36, Pages: 1435-1445, ISSN: 0955-2219
Chen Z, Wang X, Atkinson A, et al., 2016, Spherical indentation of porous ceramics: Cracking and toughness, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 36, Pages: 3473-3480, ISSN: 0955-2219
Cooper SJ, Bertei A, Shearing PR, et al., 2016, TauFactor: An open-source application for calculating tortuosity factors from tomographic data, SoftwareX, Vol: 5, Pages: 203-210
© 2016 The Author(s) TauFactor is a MatLab application for efficiently calculating the tortuosity factor, as well as volume fractions, surface areas and triple phase boundary densities, from image based microstructural data. The tortuosity factor quantifies the apparent decrease in diffusive transport resulting from convolutions of the flow paths through porous media. TauFactor was originally developed to improve the understanding of electrode microstructures for batteries and fuel cells; however, the tortuosity factor has been of interest to a wide range of disciplines for over a century, including geoscience, biology and optics. It is still common practice to use correlations, such as that developed by Bruggeman, to approximate the tortuosity factor, but in recent years the increasing availability of 3D imaging techniques has spurred interest in calculating this quantity more directly. This tool provides a fast and accurate computational platform applicable to the big datasets ( > 10 8 voxels) typical of modern tomography, without requiring high computational power.
Dewage HH, Yufit V, Brandon NP, 2016, Study of Loss Mechanisms Using Half-Cell Measurements in a Regenerative Hydrogen Vanadium Fuel Cell, JOURNAL OF THE ELECTROCHEMICAL SOCIETY, Vol: 163, Pages: A5236-A5243, ISSN: 0013-4651
Dong J, Wu X, Chen Y, et al., 2016, A study on Pb2+/Pb electrodes for soluble lead redox flow cells prepared with methanesulfonic acid and recycled lead, JOURNAL OF APPLIED ELECTROCHEMISTRY, Vol: 46, Pages: 861-868, ISSN: 0021-891X
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