Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/81847
Title: Efficient and durable oxygen reduction and evolution of a hydrothermally synthesized La(Co 0.55 Mn 0.45 ) 0.99 O 3−δ nanorod/graphene hybrid in alkaline media
Authors: Ge, Xiaoming
Goh, F. W. Thomas
Li, Bing
Hor, T. S. Andy
Zhang, Jie
Xiao, Peng
Wang, Xin
Zong, Yun
Liu, Zhaolin
Issue Date: 2015
Source: Ge, X., Goh, F. W. T., Li, B., Hor, T. S. A., Zhang, J., Xiao, P., et al. (2015). Efficient and durable oxygen reduction and evolution of a hydrothermally synthesized La(Co 0.55 Mn 0.45 ) 0.99 O 3−δ nanorod/graphene hybrid in alkaline media . Nanoscale, 7(19), 9046-9054.
Series/Report no.: Nanoscale
Abstract: The increasing global energy demand and the depletion of fossil fuels have stimulated intense research on fuel cells and batteries. Oxygen electrocatalysis plays essential roles as the electrocatalytic reduction and evolution of di-oxygen are always the performance-limiting factors of these devices relying on oxygen electrochemistry. A novel perovskite with the formula La(Co0.55Mn0.45)0.99O3−δ (LCMO) is designed from molecular orbital principles. The hydrothermally synthesized LCMO nanorods have unique structural and chemical properties and possess high intrinsic activities for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The synergic covalent coupling between LCMO and NrGO enhances the bifunctional ORR and OER activities of the novel LCMO/NrGO hybrid catalyst. The ORR activity of LCMO/NrGO is comparable to the state-of-the-art Pt/C catalyst and its OER activity is competitive to the state-of-the-art Ir/C catalyst. LCMO/NrGO generally outperforms Pt/C and Ir/C with better bifunctional ORR and OER performance and operating durability. LCMO/NrGO represents a new class of low-cost, efficient and durable electrocatalysts for fuel cells, water electrolysers and batteries.
URI: https://hdl.handle.net/10356/81847
http://hdl.handle.net/10220/39682
ISSN: 2040-3364
DOI: 10.1039/C5NR01272D
Rights: © 2015 The Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Nanoscale, The Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1039/C5NR01272D].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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