Kim, Jung Sub Byun, Dongjin Lee, Joong Kee 2024-01-20T10:02:33Z 2024-01-20T10:02:33Z 2021-09-05 2014-04 1567-1739 https://pubs.kist.re.kr/handle/201004/126918 The electrochemical and compositional changes of a solid electrolyte interphase (SEI) layer formed on the surface of silicon thin film are investigated in order to determine the effect of the content of fluoroethylene carbonate (FEC) additive in the electrolyte. Comparisons are made with FEC-free electrolyte, in which the major components are (CH2OCO2Li)(2) and Li2CO3. The (CH2OCO2Li)(2) and Li2CO3 of the SEI layer in the FEC-containing electrolyte decreases, and polycarbonate and LiF increase relatively with the repression of -OCO2Li groups. The additive affects the composition of the SEI layer, which leads to lower resistance. The electrochemical performance regarding cycle retention, coulombic efficiency, rate capability, and discharge capacity in the FEC-containing cell are significantly enhanced compared to that of the FEC-free electrolyte. The observed optimum FEC concentration in the electrolyte is 1.5%, due to the reduced charge transfer and SEI resistance in our experimental range. (C) 2014 Elsevier B. V. All rights reserved. English ELSEVIER SCIENCE BV LI-ION BATTERIES RECHARGEABLE LITHIUM BATTERIES VINYL ETHYLENE CARBONATE SURFACE-CHEMISTRY CYCLE LIFE NONAQUEOUS ELECTROLYTES NEGATIVE ELECTRODES POLYACRYLIC-ACID SI PERFORMANCE Electrochemical characteristics of amorphous silicon thin film electrode with fluoroethylene carbonate additive Article 10.1016/j.cap.2014.02.008 1 CURRENT APPLIED PHYSICS, v.14, no.4, pp.596 - 602 CURRENT APPLIED PHYSICS 14 4 596 602 scie scopus kci ART001875193 000333977100014 2-s2.0-84896784865 Materials Science, Multidisciplinary Physics, Applied Materials Science Physics Article LI-ION BATTERIES RECHARGEABLE LITHIUM BATTERIES VINYL ETHYLENE CARBONATE SURFACE-CHEMISTRY CYCLE LIFE NONAQUEOUS ELECTROLYTES NEGATIVE ELECTRODES POLYACRYLIC-ACID SI PERFORMANCE Amorphous materials Chemical vapor deposition Interface Thin films