Abstract
An issue with conventional non-aqueous Li-O2 battery cathodes that are formed by spraying/brushing/casting/coating carbon black slurries is a lack of sufficiently large pores, vulnerable to clogging by solid discharge products, and hence resulting in a low capacity. In this work, we report a novel cathode structure formed by screen-printing method. This deposition method allows the creation of evenly distributed large pores (∼10 μm). As compared with the cathode formed by slurry-coating method, the cathode formed by the present method increases the battery's capacity by two times. The cyclability is also seen a significant improvement. The improved performance may be attributed to large pores that give more appropriate distributions of discharge products and hence facilitate the transportation of oxygen during cycling.
Original language | English |
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Pages (from-to) | 174-180 |
Number of pages | 7 |
Journal | Journal of Power Sources |
Volume | 297 |
DOIs | |
Publication status | Published - 11 Aug 2015 |
Externally published | Yes |
Keywords
- Li-O<inf>2</inf> battery
- Lithium peroxide
- Non-aqueous electrolyte
- Screen printing
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering