A new perspective on Li-SO2 batteries for rechargeable systems

Title
A new perspective on Li-SO2 batteries for rechargeable systems
Authors
임희대박혁준김형섭김진수이병주배영준권혁조강기석
Issue Date
2015-08
Publisher
Angewandte Chemie international edition
Citation
VOL 54, NO 33-9667
Abstract
Primary Li– SO 2 batteries offer a high energy density in a wide operating temperature range with exceptionally long shelf life and have thus been frequently used in military and aerospace applications. Although these batteries have never been demonstrated as a rechargeable system, herein, we show that the reversible formation of Li 2 S 2 O 4, the major discharge product of Li– SO 2 battery, is possible with a remarkably smaller charging polarization than that of a Li– O 2 battery without the use of catalysts. The rechargeable Li– SO 2 battery can deliver approximately 5400 mAh g− 1 at 3.1 V, which is slightly higher than the performance of a Li– O 2 battery. In addition, the Li– SO 2 battery can be operated with the aid of a redox mediator, exhibiting an overall polarization of less than 0.3 V, which results in one of the highest energy efficiencies achieved for Li– gas battery systems.
URI
http://pubs.kist.re.kr/handle/201004/67582
ISSN
1433-7851
Appears in Collections:
KIST Publication > Article
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