Seo, Hyoree Na, Subin Lee, Boeun Yim, Taeeun Oh, Si Hyoung 2024-01-19T22:03:56Z 2024-01-19T22:03:56Z 2021-09-03 2018-08 1226-086X https://pubs.kist.re.kr/handle/201004/121098 Spinel-structured lithium manganese oxides are considered as promising cathode material, however, their widespread commercial application remains hampered by their poor surface instability. To overcome these problems, we designed and synthesized task-specific ionic liquid additives that can effectively scavenge trace amounts of fluoride in the cell. Addition of ionic liquid additives in the electrolyte significantly improves cycling retention. H-1- and F-19-nuclear magnetic resonance spectroscopy measurements and inductively coupled plasma mass spectrometry elemental analysis collaboratively provides clear evidence that the ionic liquid additives selectively suppress parasitic reactions of the electrolyte with the surface of lithium manganese oxides cathode. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. English 한국공업화학회 Enhancement of surface stability of lithium manganese oxide spinel by silyl-group functionalized fluoride-responsive ionic liquid additives Article 10.1016/j.jiec.2018.03.029 1 Journal of Industrial and Engineering Chemistry, v.64, pp.311 - 317 Journal of Industrial and Engineering Chemistry 64 311 317 N scie scopus kci ART002377706 000437068500032 2-s2.0-85044844532 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article CATHODE MATERIALS LI ELECTROLYTES PERFORMANCE TEMPERATURE GRAPHITE LIPF6 ELECTRODES BATTERIES CONTACT Surface stability Cathode Lithium manganese oxides Silyl functional group Electrolyte additive