METHOD FOR PRODUCING POROUS MICROFIBRES OF COPPER(II) OXIDE Russian patent published in 2024 - IPC B82Y40/00 C01B13/14 C01G3/02 C25B1/00 

FIELD: microfibres.

SUBSTANCE: invention is related to production of nanoporous micro-sized copper(II) oxide fibres, which can be used as a material for electrodes of lithium-ion batteries (LIBs) and gas sensors, and their developed surface makes them promising catalysts. The method includes preparing a working solution containing a two-component aqueous-organic solvent, a proligand and a background electrolyte (potassium chloride), electrolysis of the working solution with copper electrodes and potassium chloride, further separation of the target reaction product by filtration, drying it, subsequent thermal decomposition with calcination. Succinic acid is used as a proligand in the working solution, and the water:dimethyl sulfoxide (DMSO) system in a volume ratio of 1:1 is used as a two-component aqueous-organic solvent. The mass ratio of water:DMSO:proligand:background electrolyte is 46.5:51.2:1.8:0.5. Electrolysis of the working solution is carried out using a current of alternating polarity with a density of 4 to 6 mA/cm² with a half-cycle duration of 10 s. Washing of the formed precipitate is carried out after successively filtering 3 times with water, 3 times with ethanol, followed by drying for 12 hours.

EFFECT: proposed method ensures production of porous copper(II) oxide microfibers with a developed surface and a pronounced thread-like structure due to the high ratio of the average particle length to diameter.

1 cl, 10 dwg, 8 tbl, 3 ex