산소발생반응을 위한 CuCo₂O₄ 나노섬유 전기화학 촉매 합성 및 특성 분석

The non-noble 1D nanofibers(NFs) prepared by electrospinning and calcination method were used as oxygen evolution reaction (OER) electrocatalyst for water electrolysis. The electrospinning process and rate of solution composition was optimized to prepare uniform and non-beaded PVP polymer electrospun NFs. The diameter and morphology of PVP NFs changed in accordance with the viscosity and ion conductivity. The clean metal precursor contained electrospun fibers were synthesized via the optimized electrospinning process and solution composition. The calcined CuCo₂O₄ NFs catalyst showed higher activity and long-term cycle stability for OER compared with other Co₃O₄, NiCo₂O NF catalysts. Furthermore, the CuCo₂O₄ NFs maintained the OER activity during long-term cycle test compared with commercial CuCo₂O₄ nanoparticle catalyst due to unique physicochemical and electrochemical properties by1D nanostructure.