3-D inkjet-printed solid oxide electrochemical reactors. II. LSM - YSZ electrodes

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Title: 3-D inkjet-printed solid oxide electrochemical reactors. II. LSM - YSZ electrodes
Author(s): Farandos, NM
Li, T
Kelsall, GH
Item Type: Journal Article
Abstract: Inkjet printing is an economical additive manufacturing technique with minimal material waste, which offers a high degree of control over vertical resolution, so lending itself well to the fabrication of the functional layers of solid oxide electrochemical reactors. We formulated a printable and stable colloidal dispersion of La0.8Sr0.2MnO3 (LSM) -(Y2O3)0.08(ZrO2)0.92 (YSZ) ink to print sequentially onto an inkjet-printed YSZ electrolyte sintered to a Ni-YSZ substrate to form the cell: Ni-YSZ|YSZ|YSZ-LSM|LSM. After sintering, the electrolyte and YSZ-LSM electrode were 9 and 20 μm thick, respectively. The performances of these reactors were determined as fuel cells, operating with dry H2, and as electrolysers, operating with CO/CO2 in the ratio 1/9. At 788 °C, the peak fuel cell power density was 0.69 W cm-2, and at a cell potential difference of 1.5 V, the electrolysis current density was 3.3 A cm-2, indicating that the performance of inkjet-printed YSZ-LSM electrodes can exceed those fabricated by conventional powder mixing processes.
Publication Date: 16-Mar-2018
Date of Acceptance: 15-Mar-2018
URI: http://hdl.handle.net/10044/1/58594
DOI: https://dx.doi.org/10.1016/j.electacta.2018.03.095
ISSN: 0013-4686
Publisher: Elsevier
Start Page: 264
End Page: 273
Journal / Book Title: Electrochimica Acta
Volume: 270
Copyright Statement: © 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Keywords: Inkjet printing; reversible solid oxide fuel cell - electrolyser; yttria-stabilised zirconia (YSZ); lanthanum strontium manganite (LSM); CO2 electrolysis
03 Chemical Sciences
09 Engineering
02 Physical Sciences
Energy
Publication Status: Published
Online Publication Date: 2018-04-04
Appears in Collections:Faculty of Engineering
Chemical Engineering



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