Carbon-, Binder-, and Precious Metal-Free Cathodes for Non-Aqueous Lithium Oxygen Batteries: Nanoflake-Decorated Nanoneedle Oxide Arrays

Authors
Riaz, AhmerJung, Kyu-NamChang, WonyoungShin, Kyung-HeeLee, Jong-Won
Issue Date
2014-10-22
Publisher
American Chemical Society
Citation
ACS Applied Materials & Interfaces, v.6, no.20, pp.17815 - 17822
Abstract
Rechargeable lithium-oxygen (Li-O-2) batteries have higher theoretical energy densities than today's lithium-ion batteries and are consequently considered to be an attractive energy storage technology to enable long-range electric vehicles. The main constituents comprising a cathode of a lithium-oxygen (Li-O-2) battery, such as carbon and binders, suffer from irreversible decomposition, leading to significant performance degradation. Here, carbon- and binder-free cathodes based on nonprecious metal oxides are designed and fabricated for Li-O-2 batteries. A novel structure of the oxide-only cathode having a high porosity and a large surface area is proposed that consists of numerous one-dimensional nanoneedle arrays decorated with thin nanoflakes. These oxide-only cathodes with the tailored architecture show high specific capacities and remarkably reduced charge potentials (in comparison with a carbon-only cathode) as well as excellent cyclability (250 cycles).
Keywords
LI-O-2; PERFORMANCE; NANOFIBERS; ELECTRODES; CATALYSTS; CAPACITY; FOAM; LI; LI-O-2; PERFORMANCE; NANOFIBERS; ELECTRODES; CATALYSTS; CAPACITY; FOAM; LI; lithium-oxygen battery; carbon; metal oxide array; nanoarchitecture; cyclability
ISSN
1944-8244
URI
https://pubs.kist.re.kr/handle/201004/126222
DOI
10.1021/am504463b
Appears in Collections:
KIST Article > 2014
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