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Song, Hyun-Kon
eclat: ElectroChemistry Lab of Advanced Technology
Research Interests
  • Electrochemical analysis, electroactive materials, electrochemistry-based energy devices

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Contorted polycyclic aromatic hydrocarbon: promising Li insertion organic anode

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Title
Contorted polycyclic aromatic hydrocarbon: promising Li insertion organic anode
Author
Park, JaehyunLee, Cheol WooJoo, Se HunPark, Ju HyunHwang, ChihyunSong, Hyun-KonPark, Young S.Kwak, Sang KyuAhn, SeokhoonKang, Seok Ju
Issue Date
2018-07
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY A, v.6, no.26, pp.12589 - 12597
Abstract
Enhancing the performance of carbon-based anode materials in Li-ion battery (LIB) systems is of considerable interest in terms of next-generation LIB host electrodes, because the unique reversible intercalation-de-intercalation process of such materials ultimately facilitates increases in LIB performance and longevity. This study explored the potential of a new class of carbon-based contorted hexabenzocoronene (c-HBC) as an anode material for high-performance LIB systems. The exploitation of the polymorphic crystalline nature of c-HBC resulted in successful development of a LIB anode based on a newly found crystal phase of trigonal R[3 with combining macron] by solvent and subsequent thermal annealing. Our in-depth analysis based on cross-sectional transmission electron microscopy, grazing incidence X-ray diffraction, and computational investigation revealed further advantages of using contorted molecules in LIB systems. For instance, the resulting electrochemical characteristics using half-cell architecture clearly reflected single-stage Li insertion behavior associated with the large interspacing and short diffusion length of c-HBC molecule during the discharging process. In addition, the battery exhibited excellent rate capability and cycle endurance, highlighting the suitability of c-HBC as an anode material for high-performance LIBs.
URI
https://scholarworks.unist.ac.kr/handle/201301/24427
URL
http://pubs.rsc.org/en/content/articlelanding/2018/ta/c8ta03633k#!divAbstract
DOI
10.1039/C8TA03633K
ISSN
2050-7488
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