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Choi, Nam-Soon
Energy Materials Lab
Research Interests
  • Rechargeable lithium battery, electrolytes for next generation Mg and Na battery


Degradation of spinel lithium manganese oxides by low oxidation durability of LiPF6-based electrolyte at 60 degrees C

DC Field Value Language Choi, Nam-Soon ko Yeon, Jin-Tak ko Lee, Yong-Won ko Han, Jung-Gu ko Lee, Kyu Tae ko Kim, Sung-Soo ko 2014-04-10T01:27:43Z - 2013-06-12 ko 2012-07 -
dc.identifier.citation SOLID STATE IONICS, v.219, no., pp.41 - 48 ko
dc.identifier.issn 0167-2738 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract The manganese dissolution behavior of lithium hexafluorophosphate (LiPF6) dissolved in carbonate-based organic solvents is investigated by ex situ field emission scanning electron microscope (FE-SEM), Fourier transform infrared (FT-IR). X-ray diffraction (XRD), and inductively coupled plasma (ICP). It is found that the LiPF6 salt anions in the electrolytes are prone to oxidize upon contacting delithiated lithium manganese oxide with high oxidizing power and the electrons that evolved from the oxidation of anions are consumed in the reduction of tetravalent manganese ions to trivalent manganese ions at 60 degrees C. The generated trivalent manganese ions readily undergo a disproportion reaction and thereby release divalent manganese ions into the electrolytes, which leads to a capacity loss in the lithium manganese oxide cathode. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ELSEVIER SCIENCE BV ko
dc.subject Anodic limits ko
dc.subject Disproportion reactions ko
dc.subject LiPF 6 ko
dc.subject Lithium manganese oxide ko
dc.subject Manganese dissolution ko
dc.title Degradation of spinel lithium manganese oxides by low oxidation durability of LiPF6-based electrolyte at 60 degrees C ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84862215881 ko
dc.identifier.wosid 000306869000006 ko
dc.type.rims ART ko
dc.description.wostc 10 *
dc.description.scopustc 7 * 2015-02-28 * 2014-08-21 *
dc.identifier.doi 10.1016/j.ssi.2012.05.012 ko
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