123rd General Meeting of the KCS

Type Symposium
Area Beyond Batteries: Understanding New Types of Energy Storage Technology
Room No. Room 303
Time FRI 10:30-10:50
Code ELEC2-5
Subject Operando Raman microscopy for redox mechanism in organic cathode materials
Authors Joonhee Moon
Advanced Nano-Surface Research Group, Korea Basic Science Institute, Korea
Abstract Rechargeable lithium-ion-batteries are widely used in various application, such as portable devices, bio-medical implants and electric vehiclesdue to their high energy and power density. However, current lithium-ion batteries based on inorganic materials have nearly reached their celing with respect to storage capability. Therefore, breakthroughs in new energy storge system that can surpass the current performance barrier should be broght about in a timely manner. Recently, many researchers have been made to identify organic molecules and polymers for rechargeable batteries. Here, we introduce Raman microspectroscopy installed at Advanced Nano-Surface Resarch Group in Korea Basic Science Institute (KBSI) which is especially set up in glove box to measure various materials without air exposure, which can exhibit a sample from another surface contamination when exposure to atmosphere. Additaionlly, we designed and fabricated two types of electrochemical cells developed for studying organic cathode materials during battery operation. This approach simultaneously characterizes phase transition and facailitates uncovering the realtionships between surface structure and activity during battery operation. This result provides a method for visualizing chemical structure of phase transition and the changed surface morphology.
E-mail junnymoon@kbsi.re.kr