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dc.contributor.author이현주-
dc.contributor.authorSo Hyun Park-
dc.contributor.authorJeong Seok Yeon-
dc.contributor.authorJungdon Suk-
dc.contributor.author박호석-
dc.date.accessioned2021-06-09T04:25:33Z-
dc.date.available2021-06-09T04:25:33Z-
dc.date.issued2020-02-
dc.identifier.citationVOL 382-122954-
dc.identifier.issn1385-8947-
dc.identifier.other55993-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/72344-
dc.description.abstractNitrogen-incorporated honeycomb-like nanoporous carbons (n-hC) are synthesized through the hydrothermal carbonization of a lignin precursor, subsequent KOH activation, and a post-doping process. The as-obtained n-hC exhibits a large surface area (2071?m2?g?1) and pore volume (1.11?cm3?g?1) and a high N content (3.47%). The n-hC is used as an S-hosting material with a mass loading of 64.1?wt% (S@n-hC) through the in situ redox reaction of Na2S2O3. The S@n-hC achieves a high initial discharge capacity of 1295.5?mAh?g?1 at 0.1C and retains 647.2?mAh?g?1 after 600 cycles, and shows excellent cycling stability (with the capacity fading of 0.05% per cycle over 900 cycles at 1C). The strong confinement of S in the N-incorporated micropores leads to the electrochemical and thermal stabilization of S, providing different redox environments. The facile and reversible redox kinetics of the S@n-hC are confirmed by deriving the lowest exchange current density and redox charge-transfer resistance from Tafel and Nyquist plots and through the prominent redox and charge/discharge profiles. The improved performance of the S@n-hC is attributed to the S confinement in the micropores, the honeycomb-like hierarchical structure, and the N incorporation for the inhibition of polysulfide dissolution and the efficient utilization of S.-
dc.publisherChemical engineering journal-
dc.titleConfinement of sulfur in the micropores of honeycomb-like carbon derived from lignin for lithium-sulfur battery cathode-
dc.typeArticle-
dc.relation.page122946122954-
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