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나노입자 연구단
나노입자 연구단
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A new catalyst-embedded hierarchical air electrode for high-performance Li–O2 batteries

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Title
A new catalyst-embedded hierarchical air electrode for high-performance Li–O2 batteries
Author(s)
Hee-Dae Lim; Hyelynn Song; Hyeokjo Gwon; Kyu-Young Park; Jinsoo Kim; Youngjoon Bae; Hyungsub Kim; Sung-Kyun Jung; Taewoo Kim; Yong Hyup Kim; Xavier Lepr´o; Raquel Ovalle-Robles; Ray H. Baughman; Kisuk Kang
Publication Date
2013-12
Journal
ENERGY & ENVIRONMENTAL SCIENCE, v.6, no.12, pp.3570 - 3575
Publisher
ROYAL SOC CHEMISTRY
Abstract
The Li–O2 battery holds great promise as an ultra-high-energydensity device. However, its limited rechargeability and low energy efficiency remain key barriers to its practical application. Herein, we demonstrate that the ideal electrode morphology design combined with effective catalyst decoration can enhance the rechargeability of the Li–O2 battery over 100 cycles with full discharge and charge. An aligned carbon structure with a hierarchical micro-nano-mesh ensures facile accessibility of reaction products and provides the optimal catalytic conditions for the Pt catalyst. The new electrode is highly reversible even at the extremely high current rate of 2 A g1. Moreover, we observed clearly distinct morphologies of discharge products when the catalyst is used. The effect of catalysts on the cycle stability is discussed.
URI
https://pr.ibs.re.kr/handle/8788114/1206
ISSN
1754-5692
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
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