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Kim, Youngsik
YK Research
Research Interests
  • Ionic conducting ceramic electrolyte membranes, energy conversion and storage materials and devices


Reinvestigation of Li1-xTiyV1-yS2 Electrodes in Suitable Electrolyte: Highly Improved Electrochemical Properties

DC Field Value Language Kim, Youngsik ko Goodenough, John B. ko 2014-10-02T08:52:26Z - 2014-10-02 ko 2009 ko
dc.identifier.citation ELECTROCHEMICAL AND SOLID STATE LETTERS, v.12, no.4, pp.A73 - A75 ko
dc.identifier.issn 1099-0062 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract Reversible electrochemical intercalation of Li into the Li 1-xTiyV1-yS2 dichalcogenides, which was frustrated in the 1970s by the use of 1 M LiClO4 in propylene carbonate as the electrolyte, is reinvestigated with 1 M LiP F6 in ethylene carbonate:diethyl carbonate (1:1). The choice of the electrolyte allows full electrochemical cycling between MS2 and LiMS2 (M=V or Ti0.3V0.7). The as-prepared LizMS2 (z≈0.9) samples were fully lithiated after the first discharge, and from a subsequent charge of LiVS2 to VS2, the room-temperature solubility limits of the parent 3S phase, the Li-rich hexagonal phase, the intermediate α and Β phases, and the hexagonal Li-poor hexagonal phase have been determined. Introduction of Ti in LiTi0.3V 0.7S2 remarkably improves the capacity at high cycling rates and increases the voltage by about 0.2 V. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.subject electrochemical electrodes ko
dc.subject electrochemistry ko
dc.subject electrolytes ko
dc.subject lithium compounds ko
dc.subject secondary cells ko
dc.subject sulphur compounds ko
dc.subject titanium compounds ko
dc.subject vanadium compounds ko
dc.title Reinvestigation of Li1-xTiyV1-yS2 Electrodes in Suitable Electrolyte: Highly Improved Electrochemical Properties ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-60449084056 ko
dc.identifier.wosid 000263518300004 ko
dc.type.rims ART ko
dc.description.wostc 6 *
dc.description.scopustc 5 * 2015-05-06 * 2014-10-02 *
dc.identifier.doi 10.1149/1.3070620 ko
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