Author: Park, H.W.; Lee, D.U.; Park, M.G.; Ahmed, R.; Seo, M.H.; Nazar, L.F.; Chen, Z.
Description: Developing an effective bifunctional catalyst is a significant issue, as rechargeable metal-air batteries are very attractive for future energy systems. In this study, a facile one-pot process is introduced to prepare an advanced bifunctional catalyst (op-LN) incorporating nitrogen-doped carbon nanotubes (NCNTs) into perovskite La0.5 Sr0.5 Co0.8 Fe0.2 O3 nanoparticles (LSCF-NPs). Confirmed by half-cell testing, op-LN exhibits synergistic effects of LSCF-NP and NCNT with excellent bifunctionality for both the oxygen reduction reaction and the oxygen evolution reaction. Furthermore, op-LN exhibits comparable performances in these reactions to Pt/C and Ir/C, respectively, which highlights its potential for use as a commercially viable bifunctional catalyst. Moreover, the results obtained by testing op-LN in a practical Li-air battery demonstrate improved and complementary charge/discharge performance compared to those of LSCF-NP and NCNT, and this confirms that simply prepared op-LN is a promising candidate as a highly effective bifunctional catalyst for rechargeable metal-air batteries.
Subject Headings: Air; Calcium Compounds/chemistry; Catalysis; Electric Power Supplies; Electrochemistry; Electrodes; Lithium/chemistry; Nanotubes, Carbon/chemistry; Nitrogen/chemistry; Oxides/chemistry; Titanium/chemistry; electrochemistry; energy conversion; lithium-air batteries; oxygen evolution reaction; oxygen reduction reaction
Keywords: Perovskite-nitrogen-doped carbon nanotube composite as bifunctional catalysts for rechargeable lithium-air batteries
Publication year: 2015
Journal or book title: ChemSusChem
Volume: 8
Issue: 6
Pages: 1058-1065
Find the full text :Â https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/cssc.201402986
Find more like this one (cited by): https://scholar.google.com/scholar?cites=18292144643868472023&as_sdt=1000005&sciodt=0,16&hl=en
Type: Journal Article
Serial number: 2800