Perovskite Sr0.95Ce0.05CoO3-delta loaded with copper nanoparticles as a bifunctional catalyst for lithium-air batteries
Cited 36 times inCited 23 times in
- Perovskite Sr0.95Ce0.05CoO3-delta loaded with copper nanoparticles as a bifunctional catalyst for lithium-air batteries
- Yang, Wei; Salim, Jason; Li, Shuai; Sun, Chunwen; Chen, Liquan; Goodenough, John B.; Kim, Youngsik
- Bi-functional catalysts; Brownmillerites; Copper nanoparticles; Current rate; Lithium-air battery; Oxygen reductions; PEM fuel cell; Vulcan XC72; XPS measurements; XRD analysis
- Issue Date
- ROYAL SOC CHEMISTRY
- JOURNAL OF MATERIALS CHEMISTRY, v.22, no.36, pp.18902 - 18907
- Sr 0.95Ce 0.05CoO 3-δ (SCCO) particles loaded with copper nanoparticles on their surface are shown to be excellent, low-cost, and stable bifunctional catalysts for the oxygen-reduction and oxygen-evolution reactions (ORR and OER) in aqueous solution. Evidence for the presence of Ce 3+ and Co 2+ as well as Co 4+ and Co 3+ ions revealed by XPS measurements as well as XRD analysis indicates that a CeCoO 2.5 brownmillerite phase may be extruded to the surface. A surface Co 4+/Co 3+ couple is known to be a good OER catalyst. The performance of the SCCO-based catalysts is better at higher current rates (>0.1 mA cm -2) than that of Vulcan XC-72 and even close to that of the 50% Pt/carbon-black catalyst. This catalyst could be used in a metal/air battery or a PEM fuel cell as an efficient and stable bifunctional catalyst.
- ; Go to Link
- Appears in Collections:
- ECHE_Journal Papers
- Files in This Item:
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.