Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 53, Issue 15, Pages 3926-3931Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201400711
Keywords
catalysts; carbon nanotubes; lithium-oxygen battery; redox mediators
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Funding
- National Research Foundation of Korea Grant
- Korean Government (MEST) [NRF-2009-0094219]
- Research Center Program of IBS (Institute for Basic Science) in Korea
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant
- Korea government Ministry of Trade, Industry and Energy though the human resources development program [20124010203320]
- Korea government Ministry of Trade, Industry and Energy though the Energy Efficiency & Resources program [20132020000270]
- Korea government (MSIP) [2009-0083512, 2013-000688]
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The lithium-oxygen battery has the potential to deliver extremely high energy densities; however, the practical use of Li-O-2 batteries has been restricted because of their poor cyclability and low energy efficiency. In this work, we report a novel Li-O-2 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-O-2 battery, combining an ideal air electrode and a soluble catalyst, can deliver a high reversible capacity (1000mAhg(-1)) up to 900cycles with reduced polarization (about 0.25V).
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