121st General Meeting of the KCS

Type Poster Presentation
Area Electrochemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code ELEC.P-598
Subject Cobalt-manganese oxide mesospheres supported on carbon as a highly efficient oxygen reduction/evolution electrocatalyst
Authors Sunguk Noh, Jun Ho Shim*
Department of Chemistry, Daegu University, Korea
Abstract The development of efficient and stable bifunctional catalysts towards the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is critical consideration in some applications such as secondary zinc-air batteries, and electrochemical water splitting. In this presentation, a simple chemical approach for synthesizing porous cobalt mesosphere and its hybrid structure with manganese nanostructures is reported. The cobalt mesosphere and related hybrid structures were characterized by X-ray diffraction, scanning and transmission electron microscopy, and UV-vis spectroscopy. The XRD studies confirm the successful synthesis of hybrid structure of cobalt mesospheres with manganese nanostructures. The formation of cobalt-manganese structure is through stable and simple method with hollow cobalt mesospheres as the templates in manganese coating synthesis. The cobalt-manganese nanostructures can be used as supportive electrocatalysts to exhibit enhanced catalytic activities in the ORR and OER. The electrocatalytic activity of the cobalt-manganese for ORR and OER in alkaline media was investigated by rotating disk electrode, rotating-ring disk electrode, and cyclic voltammetry. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2016R1D1A1B03930895).
E-mail tmddnr1919@naver.com