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129th General Meeting of Korean Chemical Society & Exposition Structural and electrochemical studies of fluorine substituted LiFe1-xMnxBO3 as a cathode material for Li–ion battery

Submission Date :
2 / 17 / 2022 , 16 : 57 : 44
Abstract Number :
129021730367
Presenting Type:
Oral Presentation
Presenting Area :
Analytical Chemistry - Oral Presentation of Young Analytical Chemists II
Authors :
Daeun Han, Jimin Kim, Youngil Lee*
Department of Chemistry, University of Ulsan, Korea
Assigned Code :
ANAL2.O-16 Assigend Code Guideline
Presenting Time :
FRI, 10 : 00
Among the cathode materials of lithium-ion batteries, borate-based materials have been studied by many researchers due to their high theoretical capacity (220 mAh g-1). LiFeBO3 has good reversible capacity and safety with low open-circuit voltage (OCV). In previous studies, we have shown the improved discharge capacity by fluorine substitution in oxygen site of LiFeBO3 but having structural instability. In this study, to increase structural stability, manganese has been applied to the iron site in F substituted LiFeBO3 and LiFe1-xMnxBO3-δF (x = 0, 0.25, 0.5, 0.75, and 1.0), which have been synthesized by solid-state method and characterized their structure by X-ray diffraction (XRD). In order to verify the stability of the structure, an electrochemical performance test has also been performed by using the Galvano static charge-discharge measurements.