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Recep Yuksel
다차원 탄소재료 연구단
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Necklace-like Nitrogen-Doped Tubular Carbon 3D Frameworks for Electrochemical Energy Storage

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Title
Necklace-like Nitrogen-Doped Tubular Carbon 3D Frameworks for Electrochemical Energy Storage
Author(s)
Recep Yuksel; Onur Buyukcakir; Panda P.K.; Sun Hwa Lee; Yi Jiang; Singh D.; Hansen S.; Adelung R.; Mishra Y.K.; Ahuja R.; Rodney S. Ruoff
Publication Date
2020-03
Journal
ADVANCED FUNCTIONAL MATERIALS, v.30, no.10, pp.1909725 -
Publisher
WILEY-V C H VERLAG GMBH
Abstract
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimThe design and synthesis of a necklace-like nitrogen-doped tubular carbon (NTC) are presented by growing microporous polyhedral ZIF-8 particles and a uniform layer of ZIF-8 on sacrificial ZnO tetrapods (ZTPs). Oxygen vacancies together with defect regions on the surface of the ZTPs result in the formation of ZIF-8 polyhedra in conjunction with a very thin shell. This necklace-like NTC structure has a high N content, very large surface area, ultrahigh microporosity, and quite high electrical conductivity. NTC-based symmetrical supercapacitor and zinc-ion capacitor (ZIC) devices are fabricated and their electrochemical performance is measured. The NTC supercapacitor shows an ultrahigh rate capability (up to 2000 mV s−1) and promising cycle life, retaining 91.5% of its initial performance after 50 000 galvanostatic charge–discharge cycles. An aqueous ZIC, constructed using the NTC, has a specific capacitance of 341.2 F g−1 at a current density of 0.1 A g−1 and an energy density of 189.6 Wh kg−1 with a 2.0-V voltage window, respectively. The outstanding performance is attributed to the NTC high N-doping content, a continuous “polyhedral 3D hollow” architecture and the highly porous microtubular arms exhibiting very high surface area
URI
https://pr.ibs.re.kr/handle/8788114/6987
ISSN
1616-301X
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
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