Corn-cob like nanofibres as cathode catalysts for an effective microstructure design in solid oxide fuel cells

Abstract

A microstructural design through unique corn-cob like ceramic nanofibers and investigation of the catalytic mechanisms depending on their material positions.

Highly efficient La0.8Sr0.2MnO3-δ - Ce0.9Gd0.1O1.95 nanocomposite cathodes for solid oxide fuel cells

“…It has to be commented that these values of polarization resistance are, in general, lower than those previously reported in the literature for LSMbased cathodes with different compositions and microstructures (Table 1). For instance, 0.12 Ω cm 2 for LSM-CGO powder mixture [36], 0.05 Ω cm 2 for LSM-YSZ nanofibers [12], 0.27 Ω cm 2 for LSM-infiltrated YSZ nanofibers [13] and 0.05 Ω cm 2 for CSO-infiltrated LSM at a measured temperature of 800°C [37]. Moreover, these R p values are even comparable to those reported for cobaltite-based perovskite cathodes, i.e.…”

“…The values vary in a wide range, depending on the cathode composition, microstructure and the electrolyte thickness, e.g. 1.0 W cm −2 for a commercial LSM-YSZ cathode [12] [27]. Fig.…”

“…New microstructural designs and processing methodologies have been proposed in order enhance the electrocatalytic activity and durability of the cathodes. This includes, for example, electrode nanofibers and the infiltration/impregnation of an electrocatalytic active material into porous scaffold layers [12][13][14][15][16][17][18][19][20]. Most of these methods involve multiple preparation steps, and hence are unsuitable for industrial application.…”

Structural and Catalytic Characterization of La0.6Sr0.4MnO3 Nanofibers for Application in Direct Methane Intermediate Temperature Solid Oxide Fuel Cell Anodes

“…In addition to new materials, innovative electrode architectures have been investigated as well. One-dimensional (1D) nanomaterials, like nanofibers and nanorods, have been widely studied as promising electrode structures [22][23][24][25][26][27][28]. Nanofiber electrodes feature a high void degree and active surface.…”

Improving the performance of solid oxide electrolysis cell with gold nanoparticles-modified LSM-YSZ anode

“…Several methods have been put forward to improve the OER activity of LSM-YSZ anode such as creating deficiency at A-site of LSM [9,10] or doping at B-site of LSM [11,12] , which can efficiently improve the electronic conductivity and stability of LSM. Apart from that, infiltration method is more convenient and attractive to enhance the electrochemical activity of LSM-YSZ anode by anchoring highly catalytic nanoparticles on the scaffold of the electrode [13][14][15] . The impregnated nanoparticles effectively promote the electronic or ionic conductivity of electrode, and provide more active sites for electrode reaction [15] .…”