Superior rechargeability and efficiency of lithium-oxygen batteries: Hierarchical air electrode architecture combined with a soluble catalyst

Title
Superior rechargeability and efficiency of lithium-oxygen batteries: Hierarchical air electrode architecture combined with a soluble catalyst
Authors
임희대송혜린김진수권혁조배영준박규영홍지현김해겸김태우김용협Xavier LeproRaquel Ovalle-RoblesRay H. Baughman강기석
Issue Date
2014-04
Publisher
Angewandte Chemie international edition
Citation
VOL 53, NO 15-3931
Abstract
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 (1000 mAh g− 1) up to 900 cycles with reduced polarization (about 0.25 V).
URI
http://pubs.kist.re.kr/handle/201004/67573
ISSN
1433-7851
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE