Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403

공학

한국표면공학회지 (49권6호 539-548)

Synthesis and Characterization of CuCo2O4 Nanofiber Electrocatalyst for Oxygen Evolution Reaction

산소발생반응을 위한 CuCo2O4 나노섬유 전기화학 촉매 합성 및 특성 분석

원미소;장명제;이규환;김양도;최승목;
Won, Mi So;Jang, Myeong-Je;Lee, Kyu Hwan;Kim, Yang Do;Choi, Sung Mook;

한국기계연구원부설 재료연구소 표면기술연구본부;부산대학교 재료공학과;
Surface Technology Division, Korea Institute of Materials Science (KIMS);Department of Materials Science and Engineering, Pusan National University;

DOI : 10.5695/JKISE.2016.49.6.539

Abstract

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 $CuCo_2O_4$ NFs catalyst showed higher activity and long-term cycle stability for OER compared with other $Co_3O_4$, $NiCo_2O$ NF catalysts. Furthermore, the $CuCo_2O_4$ NFs maintained the OER activity during long-term cycle test compared with commercial $CuCo_2O_4$ nanoparticle catalyst due to unique physicochemical and electrochemical properties by1D nanostructure.

Keywords

Electrolysis;Electrocatalyst;Oxygen evolution reaction;Electrospinning;Nanofiber;