394 results found
Eastwood DS, Bradley RS, Tariq F, et al., 2014, The application of phase contrast X-ray techniques for imaging Li-ion battery electrodes, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Vol: 324, Pages: 118-123, ISSN: 0168-583X
Eastwood DS, Yufit V, Gelb J, et al., 2014, Lithiation- Induced Dilation Mapping in a Lithium- Ion Battery Electrode by 3D X- Ray Microscopy and Digital Volume Correlation, ADVANCED ENERGY MATERIALS, Vol: 4, ISSN: 1614-6832
Tariq F, Yufit V, Kishimoto M, et al., 2014, Three-dimensional high resolution X-ray imaging and quantification of lithium ion battery mesocarbon microbead anodes, JOURNAL OF POWER SOURCES, Vol: 248, Pages: 1014-1020, ISSN: 0378-7753
Cooper SJ, Eastwood DS, Gelb J, et al., 2014, Image based modelling of microstructural heterogeneity in LiFePO4 electrodes for Li-ion batteries, JOURNAL OF POWER SOURCES, Vol: 247, Pages: 1033-1039, ISSN: 0378-7753
Troxler Y, Wu B, Marinescu M, et al., 2014, The effect of thermal gradients on the performance of lithium-ion batteries, JOURNAL OF POWER SOURCES, Vol: 247, Pages: 1018-1025, ISSN: 0378-7753
Lomberg M, Ruiz-Trejo E, Offer G, et al., 2014, Characterization of Ni-Infiltrated GDC Electrodes for Solid Oxide Cell Applications, JOURNAL OF THE ELECTROCHEMICAL SOCIETY, Vol: 161, Pages: F899-F905, ISSN: 0013-4651
Tariq F, Yufit V, Eastwood DS, et al., 2014, In-Operando X-ray Tomography Study of Lithiation Induced Delamination of Si Based Anodes for Lithium-Ion Batteries, ECS ELECTROCHEMISTRY LETTERS, Vol: 3, Pages: A76-A78, ISSN: 2162-8726
Philbin SP, Jones D, Brandon NP, et al., 2014, Exploring Research Institutes: Structures, Functioning and Typology, Portland International Conference on Management of Engineering & Technology (PICMET), Publisher: IEEE, Pages: 2569-2582, ISSN: 2159-5100
Guerra C, Lanzini A, Leone P, et al., 2014, Optimization of dry reforming of methane over Ni/YSZ anodes for solid oxide fuel cells, JOURNAL OF POWER SOURCES, Vol: 245, Pages: 154-163, ISSN: 0378-7753
Duboviks V, Maher RC, Kishimoto M, et al., 2014, A Raman spectroscopic study of the carbon deposition mechanism on Ni/CGO electrodes during CO/CO2 electrolysis, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, Vol: 16, Pages: 13063-13068, ISSN: 1463-9076
© 2013 IEEE. We present a fast, low-cost approach to measure battery impedance 'on-line' in a vehicle across a range of frequencies (1-2000 Hz). Impedance measurement has promise for improving battery management since it is a very effective non-invasive method of diagnosing the internal state of an electrochemical cell. It is useful for estimating temperature, ageing, state of charge (SOC) and for fault detection. The aim of this paper is firstly to explore the usefulness of impedance for estimating SOC, focusing on lithium-ion iron phosphate (LFP) and nickel manganese cobalt oxide (NMC) cells, and secondly to demonstrate the performance of a low cost impedance measurement system that uses an existing motor drive similar to that of an electric vehicle to excite the battery current. We find that measurements made with this system are accurate to within a few per cent of results from an expensive, bulky commercial system. For SOC estimation in NMC cells, the charge transfer resistance and SEI layer resistance vary significantly with SOC. In LFP cells the parameter variation is much less obvious, although the double layer capacitance of the full pack may be a useful indicator of SOC.
, 2014, Towards the microstructural optimisation of solid oxide fuel cell electrodes
One-dimensional numerical simulation and microstructural analysis of solid oxide fuel cell (SOFC) electrodes are carried out to investigate the effect of the characteristic length scale of the porous electrodes on the performance. The sensitivity of the current density is analysed over a wide range of triple-phase boundary (TPB) density and mean-pore size, which affect the electrochemical reaction and gas transport. Comparison between conventional electrodes and nano-particle infiltrated electrodes reveals that reducing characteristic length scale in the conventional electrodes helps improve the electrode performance by reducing the reaction resistance; however, introducing nano particles into the electrodes is expected to be more effective as it has a potential to increase the TPB density whilst keeping better gaseous transport through the electrodes. The three-dimensional microstructures of both types of electrodes are obtained with focused ion beam scanning electron microscopy and provide useful microstructural information that supports the numerical analysis.
Kishimoto M, Lomberg M, Ruiz-Trejo E, et al., 2014, Towards the Microstructural Optimization of SOFC Electrodes Using Nano Particle Infiltration, Symposium on Solid State Ionic Devices 10 held during the 226th Meeting of the Electrochemical-Society, Publisher: ELECTROCHEMICAL SOC INC, Pages: 93-102, ISSN: 1938-5862
Tariq F, Yufit V, Kishimoto M, et al., 2014, Advanced 3D Imaging and Analysis of SOFC Electrodes, Symposium on Solid State Ionic Devices 10 held during the 226th Meeting of the Electrochemical-Society, Publisher: ELECTROCHEMICAL SOC INC, Pages: 81-86, ISSN: 1938-5862
Offer GJ, Brandon NP, 2014, Understanding the automotive industry: German OEM behaviour during the last 20 years and its implications
© 2013 IEEE. This work presents a study of how the automotive industry has responded in the last 20 years to pressures driven by economic and environmental issues, and by the transition towards electric mobility. Timelines for the major German automotive OEMs are presented to understand the industry's behaviour in the past in order to design suitable policies that are appropriate to reach future goals around the electrification of road transport. Based upon a comparison of the pressures arising in the automotive sector and the companies' behaviour with regard to technology choice and R&D, a set of hypotheses concerning this behaviour is then presented.
kucernak, brandon, yufit, 2013, regenerative fuel cells
The present invention provides a regenerative fuel cell comprising an anionic membrane capable of selectively passing anions, wherein the pH of the anolyte and/or catholyte is at least 10. The present invention also relates to a method of operating a regenerative fuel cell comprising an anionic membrane capable of selectively passing anions, wherein the pH of the anolyte and/or catholyte is at least 10.
Chakrabarti MH, Brandon NP, Mjalli FS, et al., 2013, Cyclic Voltammetry of Metallic Acetylacetonate Salts in Quaternary Ammonium and Phosphonium Based Deep Eutectic Solvents, JOURNAL OF SOLUTION CHEMISTRY, Vol: 42, Pages: 2329-2341, ISSN: 0095-9782
Wu B, Yufit V, Marinescu M, et al., 2013, Coupled thermal-electrochemical modelling of uneven heat generation in lithium-ion battery packs, JOURNAL OF POWER SOURCES, Vol: 243, Pages: 544-554, ISSN: 0378-7753
Lorente E, Berrueco C, Millan M, et al., 2013, Effect of tar fractions from coal gasification on nickel-yttria stabilized zirconia and nickel-gadolinium doped ceria solid oxide fuel cell anode materials, JOURNAL OF POWER SOURCES, Vol: 242, Pages: 824-831, ISSN: 0378-7753
Corcoran D, Cummins D, Duckett A, et al., 2013, Development of metal supported solid oxide fuel cells for operation at 500-600 °c, Pages: 2900-2903, ISSN: 1059-9495
A novel metal-supported solid oxide fuel cell has been developed that is capable of operating at temperatures of 500-600 °C. The rationale behind the materials used to construct this fuel cell type is given, and results are presented from cell testing on hydrogen and reformed natural gas, including durability trials of some 2500 h duration. This new fuel cell variant is shown to be tolerant of carbon monoxide, durable, robust to thermal and redox cycling, and capable of delivering technologically relevant power densities. © 2013 ASM International.
Chakrabarti MH, Low CTJ, Brandon NP, et al., 2013, Progress in the electrochemical modification of graphene-based materials and their applications, ELECTROCHIMICA ACTA, Vol: 107, Pages: 425-440, ISSN: 0013-4686
Rhazaoui K, Cai Q, Adjiman CS, et al., 2013, Towards the 3D modeling of the effective conductivity of solid oxide fuel cell electrodes: I. Model development, CHEMICAL ENGINEERING SCIENCE, Vol: 99, Pages: 161-170, ISSN: 0009-2509
Millichamp J, Mason TJ, Brandon NP, et al., 2013, A study of carbon deposition on solid oxide fuel cell anodes using electrochemical impedance spectroscopy in combination with a high temperature crystal microbalance, JOURNAL OF POWER SOURCES, Vol: 235, Pages: 14-19, ISSN: 0378-7753
Maher RC, Duboviks V, Offer GJ, et al., 2013, Raman Spectroscopy of Solid Oxide Fuel Cells: Technique Overview and Application to Carbon Deposition Analysis, FUEL CELLS, Vol: 13, Pages: 455-469, ISSN: 1615-6846
Somalu MR, Yufit V, Brandon NP, 2013, The effect of solids loading on the screen-printing and properties of nickel/scandia-stabilized-zirconia anodes for solid oxide fuel cells, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, Vol: 38, Pages: 9500-9510, ISSN: 0360-3199
Chakrabarti MH, Brandon NP, Hashim MA, et al., 2013, Cyclic Voltammetry of Iron (III) Acetylacetonate in Quaternary Ammonium and Phosphonium Based Deep Eutectic Solvents, INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, Vol: 8, Pages: 9652-9676, ISSN: 1452-3981
Somalu MR, Yufit V, Shapiro IP, et al., 2013, The impact of ink rheology on the properties of screen-printed solid oxide fuel cell anodes, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, Vol: 38, Pages: 6789-6801, ISSN: 0360-3199
Mook WT, Aroua MK, Chakrabarti MH, et al., 2013, The application of nano-crystalline PbO2 as an anode for the simultaneous bio-electrochemical denitrification and organic matter removal in an up-flow undivided reactor, ELECTROCHIMICA ACTA, Vol: 94, Pages: 327-335, ISSN: 0013-4686
Lanzini A, Leone P, Guerra C, et al., 2013, Durability of anode supported Solid Oxides Fuel Cells (SOFC) under direct dry-reforming of methane, CHEMICAL ENGINEERING JOURNAL, Vol: 220, Pages: 254-263, ISSN: 1385-8947
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