89 research outputs found
Development of a novel electroless deposited nickel braze for micro-tubular solid oxide fuel cell current collector contacting
© 2021 The Authors. Published by Elsevier. This is an open access article available under a Creative Commons licence.
The published version can be accessed at the following link on the publisherâs website: https://doi.org/10.1016/j.jajp.2021.100070A brazing process for the fuel electrode (anode) contacting of a micro-tubular fuel cell is reported. The low-cost, novel, electroless deposited braze suitable for mass production was optimised with respect to material loading and brazing environment. Durable current collector-anode joints were obtained while protecting sensitive solid oxide fuel cell components. It was determined that a minimum braze loading of 20 ”m thickness was required to join the current collector at multiple contacts along the interior tube wall. The final brazed current collector design achieved a high peak power density of 0.14 W.cmâ2 at 750°C, 2.35 times higher than for the un-brazed design.This research was funded by the EPSRC, grant number EP/L015749/1), through the CDT in Fuel Cells and their Fuels, led by the University of Birmingham.Accepted versio
QualitÀtsprodukt Erziehungsberatung. Empfehlungen zu Leistungen, QualitÀtsmerkmalen und Kennziffern
Neben einer Beschreibung der Leistung Erziehungs- und Familienberatung - Beratung und Therapie, prĂ€ventive Angebote und VernetzungsaktivitĂ€ten - werden ihre QualitĂ€tsmerkmale - gegliedert nach Struktur-, Prozess- und ErgebnisqualitĂ€t - ausfĂŒhrlich dargestellt und Kennziffern zu ihrer quantitativen Erfassung vorgeschlagen. Der Anhang enthĂ€lt u.a. eine Kurzfassung der vorliegenden Empfehlungen zu Leistungen, QualitĂ€tsmerkmalen und Kennziffern. (DIPF/Autor
INFLUENCIA DEL USO DE MALLA PERLA Y ROJA EN LAS CONDICIONES MICRO-CLIMĂTICAS, DAĂO POR SOL Y DESARROLLO DE COLOR DE FRUTOS EN HUERTOS DE MANZANOS CVS. GALA Y FUJI
Internal current collection and thermofluidynamic enhancement in a microtubular SOFC
This is an accepted manuscript of an article published by Elsevier in International Journal of Heat and Mass Transfer, available online: https://doi.org/10.1016/j.ijheatmasstransfer.2021.121255
The accepted version of the publication may differ from the final published version.A low-cost, durable and simple internal current collector is presented for microtubular SOFCs (”T-SOFC). The internal design does not require removal of external cell layers, and subsequent loss of active area required to expose the interior electrode for contacting. The brush-like, high surface area current collector device is adapted from heat exchanger turbuliser technology produced by CALGAVIN Ltd. The effectiveness of the hiTRANŸ turbuliser as a ”T-SOFC current collector is explored and its thermofluidynamic effects on the cell described, as well as coating of the hiTRANŸ design to reduce electrical contact resistance. The final design achieved a current density at 0.7 V of 0.38 A.cm and peak power density of 0.27 W.cm , 4.3 times higher than the original design and 3.3 times higher than the state-of-the-art with the same base materials.This work was supported by the Centre for Doctoral Training (CDT) in Fuel Cells and their Fuels, which is part-funded by the EPSRC under contract EP/L015749/1.Accepted versio
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