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나노입자 연구단
나노입자 연구단
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Superior Rechargeability and Efficiency of Lithium-Oxygen Batteries: Hierarchical Air Electrode Architecture Combined with a Soluble Catalyst Highly Cited Paper

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Title
Superior Rechargeability and Efficiency of Lithium-Oxygen Batteries: Hierarchical Air Electrode Architecture Combined with a Soluble Catalyst
Author(s)
Hee-Dae Lim; Song, H; Jinsoo Kim; Hyeokjo Gwon; Youngjoon Bae; Kyu-Young Park; Jihyun Hong; Haegyeom Kim; Kim, T; Kim, YH; Lepro, X; Ovalle-Robles, R; Baughman, RH; Kisuk Kang
Publication Date
2014-04
Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.53, no.15, pp.3926 - 3931
Publisher
WILEY-V C H VERLAG GMBH
Abstract
The lithium-oxygen battery has the potential to deliver extremely high energy densities; however, the practical use of Li-O2 batteries has been restricted because of their poor cyclability and low energy efficiency. In this work, we report a novel Li-O2 battery with high reversibility and good energy efficiency using a soluble catalyst combined with a hierarchical nanoporous air electrode. Through the porous three-dimensional network of the air electrode, not only lithium ions and oxygen but also soluble catalysts can be rapidly transported, enabling ultra-efficient electrode reactions and significantly enhanced catalytic activity. The novel Li-O2 battery, combining an ideal air electrode and a soluble catalyst, can deliver a high reversible capacity (1000 mAh g-1) up to 900 cycles with reduced polarization (about 0.25 V). Outstanding storage performance: A lithium-oxygen battery that uses a soluble catalyst combined with a hierarchical nanoporous air electrode shows high reversibility and good energy efficiency. Through the porous three-dimensional network of the air electrode, not only lithium ions and oxygen but also soluble catalysts can be rapidly transported, enabling significantly enhanced catalytic activity (CNT=carbon nanotube). © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
URI
https://pr.ibs.re.kr/handle/8788114/1077
ISSN
1433-7851
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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