120th General Meeting of the KCS

Type Poster Presentation
Area Electrochemistry
Room No. Exhibition Hall 2+3
Time 10월 20일 (금요일) 13:00~14:30
Code ELEC.P-480
Subject Temperature Dependent Crystal Structure of MoO3 for Lithium-Ion Batteries
Authors Eunji Jung, Yong-Guen Son*
Department of Chemistry, Sungkyunkwan University, Korea
Abstract Secondary battery systems are considered as an essential energy storage system (ESS). Among them, lithium-ion batteries (LIBs) have attracted considerable attentions because they could be applied as the power source for small portable devices as well as ESS for very large grid systems. As a cathode material for LIBs, molybdenum-based materials were used because they have advantages such as low cost, abundant resources and non-toxicity. Also, it can be applied at Sodium-ion battery (SIB) area. In this work, nanobelt and hexagonal prism structured MoO3 were synthesized by hydrothermal method. The crystal structure were dominantly dependent on the temperature during the synthetic procedure. When the synthetic temperature was controlled at 120 oC, hexagonal MoO3 was synthesized. But 140 oC and 160 oC allowed hexagonal MoO3 and orthorhombic MoO3 were formed at the same time. When the hydrothermal temperature was raised to 200 oC, only orthorhombic MoO3 was synthesized. Temperature dependent redox capacity of MoO3 was also presented. 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