We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Redox-Mediated Polymer Catalyst for Lithium-Air Batteries with High Round-Trip Efficiency.
- Authors
Kim, Min-Cheol; Song, Jung Hyun; Lee, Young-Woo; Sohn, Jung Inn
- Abstract
Lithium-air batteries (LABs) continue to receive attention as a promising power source because they possess a high theoretical energy density of 3436 Wh L−1. However, the remaining Li2O2 resulting from the irreversible decomposition of Li2O2 during the charge process is one of the key challenges so as to address the deterioration of the cycling performance of LABs. In this study, we propose and report a redox-mediated polymer catalyst (RPC) as a cathode catalyst being composed of LiI and poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) with multi-wall carbon nanotubes (MWCNTs) as the cathode material. In the RPC, iodine molecules are chemically combined with the PVDF-HFP chain. The as-prepared RPC exhibits increased cycling performance by 194% and decreased overpotential by 21.1% at 0.1 mA cm−2 compared to the sample without LiI molecules. Furthermore, these results suggest that the RPC consisting of a polymer chain and redox mediators will be extensively utilized as highly efficient catalysts of LABs.
- Subjects
LITHIUM-air batteries; POLYMERS; CATALYSTS; CARBON nanotubes; ENERGY density; REDOX polymers
- Publication
Catalysts (2073-4344), 2020, Vol 10, Issue 12, p1479
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal10121479