Related Researcher

Author's Photo

Hong, Sung You
Synthetic Organic Chemistry Laboratory
Research Interests
  • Synthetic organic chemistry, transition metals, oxidation state


Dual-function ethyl 4,4,4-trifluorobutyrate additive for high-performance Ni-rich cathodes and stable graphite anodes

DC Field Value Language Kim, Koeun ko Kim, Yeonkyoung ko Park, Sewon ko Yang, Hyun Ji ko Park, Sung Ji ko Shin, Kyomin ko Woo, Jung-Je ko Kim, Saheum ko Hong, Sung You ko Choi, Nam-Soon ko 2018-07-26T09:01:02Z - 2018-07-17 ko 2018-08 ko
dc.identifier.citation JOURNAL OF POWER SOURCES, v.396, pp.276 - 287 ko
dc.identifier.issn 0378-7753 ko
dc.identifier.uri -
dc.description.abstract An ethyl 4,4,4-trifluorobutyrate (ETFB) additive, with ester and partially fluorinated alkyl moieties, is employed to stabilize the interface structure of Ni-rich layered LiNi0.7Co0.15Mn0.15O2 (NCM) cathodes and graphite anodes. The analysis of the surface chemistry of the electrodes shows that ETFB serves as a Afunctional additive for constructing protective layers on both electrodes in a full cell. Cycling tests reveal that the addition of 1% ETFB leads to excellent capacity retention (84.8%) for the NCM/graphite full cell, which also delivers a superior discharge capacity of 167 mAh g(-1) and a high Coulombic efficiency of over 99.8% after 300 cycles at 45 degrees C. The ETFB-derived protective layer effectively reduces intergranular cracking in secondary NCM cathode particles upon repeated charge-discharge cycling and limits the dissolution of transition metal ions from the cathode at high temperatures. In addition, after ETFB reduction, the graphite anode develops a thermally stable interface structure, which suppresses the self-discharge of graphite coupled with the NCM cathode at 60 degrees C. ko
dc.language 영어 ko
dc.publisher ELSEVIER SCIENCE BV ko
dc.title Dual-function ethyl 4,4,4-trifluorobutyrate additive for high-performance Ni-rich cathodes and stable graphite anodes ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85048390487 ko
dc.identifier.wosid 000440876700032 ko
dc.type.rims ART ko
dc.identifier.doi 10.1016/j.jpowsour.2018.06.046 ko
dc.identifier.url ko
Appears in Collections:
CHM_Journal Papers
ECHE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show simple item record


  • mendeley


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.