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나노입자 연구단
나노입자 연구단
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Achieving outstanding Li+-ORR and -OER activities via edge- and corner-embedded bimetallic nanocubes for rechargeable Li-O2 batteries

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Title
Achieving outstanding Li+-ORR and -OER activities via edge- and corner-embedded bimetallic nanocubes for rechargeable Li-O2 batteries
Author(s)
Jung, J.; Song, K.; Bae, Y.; Choi, S.-I.; Park, M.; Cho, E.; Kisuk Kang; Kang, Y.-M.
Publication Date
2015-11
Journal
NANO ENERGY, v.18, no., pp.71 - 80
Publisher
Elsevier BV
Abstract
The shape of catalysts has been regarded as a crucial physical factor to determine its catalytic activity in various applications. However, very little is known about the catalyst shape-dependent activities for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in the cathode of Li-O2 battery. Hence, we synthesized Pt3Co nanocube (NC) for the comparison with Pt3Co nanoparticle (NP) by regulating the ratio of reducer (hexadecanediol; HDD) amount. Consequently, we could report on very high capacity (10,000mAh gcarbon -1), superb rate capability (3500mAh gcarbon -1 at 2000mA gcarbon -1) and high reversibility of Lithium-O2 batteries using Pt3Co NC catalysts. Particularly, the Pt3Co NCs catalyst exhibited a low OER potential of 3.1V, providing the highest round trip efficiency of ~86.5% at a current density of 200mA gcarbon -1, which is much superior to NPs catalyst. © 2015 Elsevier Ltd
URI
https://pr.ibs.re.kr/handle/8788114/2261
ISSN
2211-2855
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
60.NanoEnergy(Achieving outstanding Li+-ORR).pdfDownload

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