Seo, Hyo Ree Lee, Hae Ri Kang, Dong-Ku Yim, Taeeun Oh, Si Hyoung 2024-01-20T00:34:29Z 2024-01-20T00:34:29Z 2021-09-04 2017-09 1226-086X https://pubs.kist.re.kr/handle/201004/122376 Spinel-structured lithium manganese oxides (LMOs) suffer from manganese dissolution at elevated temperatures, which leads to severe capacity fading. In this work, a novel strategic approach was developed to alleviate this phenomenon by using poly(dimethylsiloxane) (PDMS) as a simple and scalable electrode additive. LMO electrodes containing finely dispersed PDMS were prepared using a conventional electrode coating process. Electrochemical studies showed that the PDMS-dispersed LMO electrodes had significantly improved cycling retentions. Ex-situ FT-IR and F-19 NMR spectra indicated PDMS chemically scavenged the F- species, which cause manganese dissolution in LMO-based cells. In addition, a plausible mechanism was proposed based on the spectroscopic evidences. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. English 한국공업화학회 Surface-initiated fluoride-scavenging polymeric layer on cathode materials for lithium-ion batteries Article 10.1016/j.jiec.2017.05.015 1 Journal of Industrial and Engineering Chemistry, v.53, pp.425 - 428 Journal of Industrial and Engineering Chemistry 53 425 428 N scie scopus kci ART002263625 000405044600048 2-s2.0-85020136647 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article ORGANIC CARBONATE ELECTROLYTES POSITIVE-ELECTRODE HF FORMATION PERFORMANCE ADDITIVES DISSOLUTION MECHANISM PHOSPHITE FAILURE ANODE Lithium manganese oxides Spinel Poly(dimethylsiloxane) Fluoride scavenging Manganese dissolution