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- Title
A New Perspective on Li-SO<sub>2</sub> Batteries for Rechargeable Systems.
- Authors
Lim, Hee ‐ Dae; Park, Hyeokjun; Kim, Hyungsub; Kim, Jinsoo; Lee, Byungju; Bae, Youngjoon; Gwon, Hyeokjo; Kang, Kisuk
- Abstract
Primary Li-SO2 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 Li2S2O4, the major discharge product of Li-SO2 battery, is possible with a remarkably smaller charging polarization than that of a Li-O2 battery without the use of catalysts. The rechargeable Li-SO2 battery can deliver approximately 5400 mAh g−1 at 3.1 V, which is slightly higher than the performance of a Li-O2 battery. In addition, the Li-SO2 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.
- Subjects
LITHIUM sulfur batteries; STORAGE batteries; ENERGY density; ELECTROCHEMISTRY; TRANSITION metals; LITHIUM ions; SULFUR dioxide
- Publication
Angewandte Chemie, 2015, Vol 127, Issue 33, p9799
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201504306