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Oxygen reduction reaction activity and structure of La-based perovskite oxides

Sunarso, Jaka 2012, Oxygen reduction reaction activity and structure of La-based perovskite oxides [data collection], Metal-air batteries based on nanostructured perovskite air electrode, RM23088.

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Field of Research 091299 Materials Engineering not elsewhere classified
Socio Economic Objective 850499 Energy Transformation not elsewhere classified
Name of data collection Oxygen reduction reaction activity and structure of La-based perovskite oxides
Creator(s) Sunarso, Jaka
Date completed 2012
Material type doc
xls
text
tiff
jpeg
plots
figures
manuscripts
ANDS collection type dataset
Collection start date 2011-01-15
Collection end date 2012-01-15
Project name Metal-air batteries based on nanostructured perovskite air electrode
Project Description In this project, LaMO3 and LaNi0.5 M0.5O3 (M = Ni, Co, Fe, Mn and Cr) perovskite oxide electrocatalysts were synthesized by a combined ethylenediaminetetraacetic acid-citrate complexation technique and subsequent calcinations at 1000 oC in air. Their powder x-ray diffraction patterns demonstrate the formation of a specific crystalline structure for each composition. The catalytic property of these materials toward the oxygen reduction reaction (ORR) was studied in alkaline potassium hydroxide solution using the rotating disk and rotating ring-disk electrode techniques. Carbon is considered as a crucial additive component since its addition into perovskite oxide leads to optimized ORR current density. For LaMO3 (M = Ni, Co, Fe, Mn and Cr), in terms of the ORR current densities, the performance is enhanced in the order of LaCrO3, LaFeO3, LaNiO3, LaMnO3 and LaCoO3. For LaNi0.5 M0.5O3, the ORR current performance is enhanced in the order of LaNi0.5Fe0.5O3, LaNi0.5Co0.5O3, LaNi0.5 Cr0.5O3 and LaNi0.5Mn0.5O3. Overall, LaCoO3 demonstrates the best performance. Most notably, substituting half of the nickel with cobalt, iron, manganese or chromium translates the ORR to a more positive onset potential; suggesting the beneficial catalytic effect of two transition metal cations with Mn as the most promising candidate. Koutecky-Levich analysis on the ORR current densities of all compositions indicates that the 4-electron pathway is favored on these oxides which are consistent with hydroperoxide ion formation of less than 2%.
Project ID RM23088
Description of resource 1706 files in 35 folders; containing 388MB
Software required OriginPro 8.0
Keyword(s) perovskite
oxygen reduction reaction
electrocatalyst
rotating electrode
Library of Congress subject heading Electrodes
Perovskite
Electrochemical analysis
Language eng
Summary 1706 files in 35 folders, containing 388MB. Comprises plots, figures, and manuscripts. The data contains x-ray diffraction patterns and electrochemical data of lanthanum based perovskite oxides (e.g. 9 different perovskite compositions e.g. LaNiO3, LaCoO3, LaFeO3, LaMnO3, LaCrO3, LaNi0.5Co0.5O3 and LaNi0.5Fe0.5O3, LaNi0.5Mn0.5O3 and LaNi0.5Cr0.5O3) characterized using rotating ring disk electrodes.
General notes The data was collected via a computer, instruments, and laboratory notes. It was organised by date.

Data coincides with 1st year of the chief investigator Dr Jaka Sunarso's Alfred Deakin postdoctoral research fellowship (January 2011-January 2012).
Contact details (email) j.sunarso@deakin.edu.au
Contact details (physical) Institute for Technology Research and Innovation, Deakin University, 75 Pigdons Road, Waurn Ponds, Victoria 3216 Australia
Copyright notice ©Deakin University
Access conditions Restricted to chief investigator and a group under Professor Maria Forsyth’s guidance for 2 years. Enquiries should be addressed to Dr Jaka Sunarso via email.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30042172

Document type: Data Collection
Collections: Centre for Material and Fibre Innovation
Datasets collection
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

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Created: Tue, 14 Feb 2012, 08:11:37 EST by Lesa Maclean

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