The present invention refers to a method for preparing a network of nanowires; to a network of nanowires obtainable by said method; to a nonwoven material comprising the network, to an electrode comprising the network, a pharmaceutical composition 10 comprising the network of nanowires, to the use of the network of nanowires and to the use of the nonwoven material.

A method for recycling rare-earth barium copper oxide (REBCO) bulk seed crystals to grow a superconducting bulk is provided, in which a first precursor and a first buffer layer are prepared, and based on a top-seeded melt-texture growth method, an original REBCO superconducting bulk is obtained, which is cleaved to obtain a recycled seed crystal; the recycled seed crystal is subjected to grinding and polishing; a second precursor and a second buffer layer are prepared, and the recycled seed crystal is inserted between the second precursor and the second buffer layer; the precursor assembly is treated through the top-seeded melt-texture growth method to obtain a REBCO superconducting bulk grown from the recycled seed crystal.

A method for recycling rare-earth barium copper oxide (REBCO) bulk seed crystals to grow a superconducting bulk is provided, in which a first precursor and a first buffer layer are prepared, and based on a top-seeded melt-texture growth method, an original REBCO superconducting bulk is obtained, which is cleaved to obtain a recycled seed crystal; the recycled seed crystal is subjected to grinding and polishing; a second precursor and a second buffer layer are prepared, and the recycled seed crystal is inserted between the second precursor and the second buffer layer; the precursor assembly is treated through the top-seeded melt-texture growth method to obtain a REBCO superconducting bulk grown from the recycled seed crystal.

A method for preparing a high-performance REBCO high-temperature bulk superconductor based on a layered precursor pellet includes: obtaining original reagents with preset molar ratios, and preparing original powders by a solid-phase sintering method; preparing three types of precursor powder combinations by mixing the original powders with preset molar ratios; pressing and stacking the precursor powder combinations to obtain a combined precursor pellet, pressing buffer precursor powders to obtain a buffer layer; processing an REBCO original seed crystal, the combined precursor pellet and the buffer layer based on a preset top-seeded melt texture growth method to obtain an initial REBCO high-temperature bulk superconductor; and performing annealing treatment according to the initial REBCO high-temperature bulk superconductor to obtain a final REBCO high-temperature bulk superconductor. The method achieves the refinement of the second phase particles in the solid solution by the modified precursor powders, and improves the superconducting performance of the bulk material.

A method for preparing a high-performance REBCO high-temperature bulk superconductor based on a layered precursor pellet includes: obtaining original reagents with preset molar ratios, and preparing original powders by a solid-phase sintering method; preparing three types of precursor powder combinations by mixing the original powders with preset molar ratios; pressing and stacking the precursor powder combinations to obtain a combined precursor pellet, pressing buffer precursor powders to obtain a buffer layer; processing an REBCO original seed crystal, the combined precursor pellet and the buffer layer based on a preset top-seeded melt texture growth method to obtain an initial REBCO high-temperature bulk superconductor; and performing annealing treatment according to the initial REBCO high-temperature bulk superconductor to obtain a final REBCO high-temperature bulk superconductor. The method achieves the refinement of the second phase particles in the solid solution by the modified precursor powders, and improves the superconducting performance of the bulk material.