Synthesis of porous high-temperature superconductors a melamine formaldehyde sacrificial template

Nanostructured high-temperature superconductors YBa 2 Cu 3 O 6+ δ and Bi 2 Sr 2 CaCu 2 O 8+ δ were synthesised using a melamine formaldehyde sponge as a sacrificial template, via three solution-based approaches. In the case of YBa 2 Cu 3 O 6+ δ , a modified Pechini method produced a material with a...

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Published inNanoscale advances Vol. 4; no. 14; pp. 311 - 318
Main Authors Luke, Emily J, Potticary, Jason, Terry, Lui R, Doan, Huan V, Hinoplen, Roemer, Cross, Sam, Ting, Valeska P, Friedemann, Sven, Hall, Simon R
Format Journal Article
Published 15.07.2022
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Summary:Nanostructured high-temperature superconductors YBa 2 Cu 3 O 6+ δ and Bi 2 Sr 2 CaCu 2 O 8+ δ were synthesised using a melamine formaldehyde sponge as a sacrificial template, via three solution-based approaches. In the case of YBa 2 Cu 3 O 6+ δ , a modified Pechini method produced a material with a superconducting transition at 92 K and a specific surface area of 4.22 m 2 g −1 . Further analysis with Hg porosimetry determined that the sponge exhibited a porosity of 82%. In the case of Bi 2 Sr 2 CaCu 2 O 8+ δ , this method produced a material that exhibited superconductivity at 86 K with a specific surface area of 9.62 m 2 g −1 . Hg-porosimetry determined that the BSCCO sponge exhibited a porosity of 78%. The synthesis of porous high-temperature superconductors has been achieved for the first time using melamine formaldehyde as a sacrificial template.
Bibliography:https://doi.org/10.1039/d2na00333c
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ISSN:2516-0230
DOI:10.1039/d2na00333c