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Park, Soojin
Nano-Functional Materials Lab
Research Interests
  • Block Copolymers, nanostructured materials for Lithium-Ion batteries, wearable and stretchable energy storage applications

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A multifunctional phosphite-containing electrolyte for 5 V-class LiNi 0.5Mn1.5O4 cathodes with superior electrochemical performance

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dc.contributor.author Song, Young-Min ko
dc.contributor.author Han, Jung-Gu ko
dc.contributor.author Park, Soojin ko
dc.contributor.author Lee, Kyu Tae ko
dc.contributor.author Choi, Nam-Soon ko
dc.date.available 2014-07-02T00:21:51Z -
dc.date.created 2014-07-02 ko
dc.date.issued 2014-07 ko
dc.identifier.citation JOURNAL OF MATERIALS CHEMISTRY A, v.2, no.25, pp.9506 - 9513 ko
dc.identifier.issn 2050-7488 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/5122 -
dc.description.abstract We report a highly promising organophosphorus compound with an organic substituent, tris(trimethylsilyl)phosphite (TMSP), to improve the electrochemical performance of 5 V-class LiNi0.5Mn 1.5O4 cathode materials. Our investigation reveals that TMSP alleviates the decomposition of LiPF6 by hydrolysis, effectively eliminates HF promoting Mn/Ni dissolution from the cathode, and forms a protective layer on the cathode surface against severe electrolyte decomposition at high voltages. Remarkable improvements in the cycling stability and rate capability of high voltage cathodes were achieved in the TMSP-containing electrolyte. After 100 cycles at 60 °C, the discharge capacity retention was 73% in the baseline electrolyte, whereas the TMSP-added electrolyte maintained 90% of its initial discharge capacity. In addition, the LiNi 0.5Mn1.5O4 cathode with TMSP delivers a superior discharge capacity of 105 mA h g-1 at a high rate of 3 C and an excellent capacity retention of 81% with a high coulombic efficiency of over 99.6% is exhibited for a graphite/LiNi0.5Mn1.5O 4 full cell after 100 cycles at 30 °C. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher ROYAL SOC CHEMISTRY ko
dc.title A multifunctional phosphite-containing electrolyte for 5 V-class LiNi 0.5Mn1.5O4 cathodes with superior electrochemical performance ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84902676757 ko
dc.identifier.wosid 000337774100011 ko
dc.type.rims ART ko
dc.description.wostc 8 *
dc.description.scopustc 0 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-07-02 *
dc.identifier.doi 10.1039/c4ta01129e ko
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84902676757 ko
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