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

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Nonaqueous arylated quinone catholytes for lithium–organic flow batteries

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Title
Nonaqueous arylated quinone catholytes for lithium–organic flow batteries
Author
Shin, Dong-SeonPark, MinjoonRyu, JaechanHwang, InchanSeo, Jeong KonSeo, KwanyongCho, JaephilHong, Sung You
Issue Date
201808
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY A, v.6, no.30, pp.14761 - 14768
Abstract
Chemically modified organic redox couples have the advantages of tunable redox properties, high solubility, environmental benignity, and cost effectiveness. Inspired by nature, a series of quinone derivatives bearing electron-donating methoxy or electron-withdrawing trifluoromethyl groups are synthesized in moderate to high yields by Pd-catalyzed Suzuki cross-coupling reactions. This study utilizes the synthetic quinones as redox-active organic molecules for nonaqueous lithium–organic flow batteries. The aryl moiety incorporated quinone scaffolds show enhanced electrochemical stability and rate capability. The nonaqueous catholyte, 2-phenyl-1,4-naphthoquinone, reaches a cell voltage of ∼2.6 V and a specific capacity of 196 mA h g−1, while the discharge capacity is retained at ∼92% for 150 cycles. Moreover, the tubular lithium–organic flow battery system features stable cycle performance under a continuous circulation without clogging-associated intermittency flow.
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DOI
http://dx.doi.org/10.1039/C8TA04720K
ISSN
2050-7488
Appears in Collections:
UCRF_Journal Papers
ECHE_Journal Papers

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