Fabrication of GdBaCo2O5+δ cathode using electrospun composite nanofibers and its improved electrochemical performance

Study and optimization of the synthesis routine of the single phase YBaCo2O6-δ double perovskite

“…Taking into account that synthesis of YBaCo 2 O 6-δ proceeds through the formation of intermediate phases of YCoO 3-δ and BaCoO 3-δ like other double perovs-kites LnBaCo 2 O 6-δ [14] as well as that a synthesis routine for these intermediate phases has been already described in literature [15,16] 3 were preliminary calcined at 1100 °C and 600 °C, respectively, in air for two hours in order to remove adsorbed H 2 O and CO 2 . Stoichiometric mixture of starting materials was dissolved in concentrated nitric acid.…”

Progress in Developing LnBaCo2O5+δ as an Oxygen Reduction Catalyst for Solid Oxide Fuel Cells

“…Perovskite oxides with nanostructured morphologies have been rigorously studied and employed in solid oxide fuel cells [182][183][184][185][186][187][188][189][190][191][192][193][194][195][196][197][198] as well as other energy-related applications [199][200][201][202]. Reducing the operating temperature creates an opportunity to use nanostructured materials, which can sidestep the slow ORR and, in turn, boost the catalytic performance of the cathode [182][183][184][185][186][187][188][189][190][191][192][193][194][195][196][197][198]. Infiltration is a common and straightforward method for developing nanostructured cathode materials tailored for SOFCs [182][183][184].…”

“…A nanostructured cathode material, represented by the formula SmBa 0.5 Sr 0.5 Co 2 O 5+δ , was created by infusing its precursor solution into the porous LSGM framework, followed by calcining at 850 • C. This material showcased commendable electrochemical performance [185]. For instance, it showed an ASR as low as 0.12 Ω cm 2 and a PPD of up to 0.70 W cm −2 at 500 • C. Electrospinning, praised for its scalability and precision, was utilized to fabricate a GdBaCo 2 O 5+δ cathode material possessing a nanofiber configuration, achieving a comparatively low ASR, approximately 0.10 Ω cm 2 at 700 • C [194].…”

Electrospun Ceramic Nanofiber Mats Today: Synthesis, Properties, and Applications

“…Furthermore, the homogenous network structure of the GBCO cathode prepared with electrospinning route is believed to enhance the cathode electrochemical activities and realize improved performance. It is also suggested that it can serve as a promising cathode material for intermediate temperature SOFC [38]. The performance of electrospun carbon NFs supported Pt catalyst as electrodes and hydrocarbon based sulfonated polyether ether ketone (SPEEK) as electrolyte in proton exchange membrane fuel cells have been investigated by Padmavathi et al [154].…”