119th General Meeting of the KCS

Type Poster Presentation
Area 전기화학
Room No. 포스터발표장
Time 4월 21일 (금요일) 13:00~14:30
Code ELEC.P-515
Subject Temperature Dependent Crystal Structure of MoO3 for Sodium-Ion Batteries
Authors 정은지, 손용근*
성균관대학교 화학과, Korea
Abstract Secondary battery systems are considered as an essential energy storage systems (ESSs). Among them, Li-ion battery (LIB) is recognized as the best one right now. Because they are already proved their capability of ESS for small portable devices as well as some of grid systems. However, Li which is the main material of LIB has limited supply because the Earth’s crust runs out thus the cost of lithium is increasing. Sodium, the second lightest alkali metal next to lithium, attracts researcher’s interest as an alternative choice because sodium is one of the most abundant materials and easily found on the earth. For large-scale energy storage systems, many great studies have made progress in exploring capable Na cathode. However, only a few anode systems have been investigated. Therefore, research work about favorable anode material is important in development of sodium-ion batteries (SIBs). As an anode material for SIBs, molybdenum-based materials were used because they have many advantages such as low cost, abundant resources and non-toxicity. In this work, nanobelt and hexagonal prism structured MoO3 were successfully synthesized by hydrothermal method for SIB use. The structures of MoO3 were dominantly influenced by the synthetic hydrothermal temperature. This temperature also affects the crystallinity of MoO3. Nanobelt and hexagonal prism structures were characterized by Scanning electron microscope (SEM), X-ray Diffraction (XRD), Energy dispersive X-ray spectroscopy (EDS). Electrochemical properties were measured by Cyclic Voltammetry (CV).
E-mail ejjung0925@skku.edu