Screen printed cathode for non-aqueous lithium–oxygen batteries

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 c...

Full description

Saved in:
Bibliographic Details
Published in:Journal of power sources 2015-11, Vol.297, p.174-180
Main Authors: Jung, C.Y., Zhao, T.S., An, L., Zeng, L., Wei, Z.H.
Format: Article
Language:English
Subjects:
Lithium peroxide
Li–O2 battery
Non-aqueous electrolyte
Screen printing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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. •A screen-printed cathode is fabricated for non-aqueous Li–O2 batteries.•Screen-printing method creates sufficiently large pores for O2 transport.•Pores in the screen-printed cathode appropriately distribute the Li2O2 deposits.•Battery's capacity and cyclability are improved with the screen-printed cathode.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2015.07.089