Journal
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume 11, Issue 7, Pages 5900-5908Publisher
ESG
DOI: 10.20964/2016.07.68
Keywords
perovskite oxides; oxygen reduction reaction; oxygen evolution reaction; LaCoO3; electrochemical analysis
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Funding
- New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy, Republic of Korea [20133030011320]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20133030011320] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Cathode of aqueous Li-air batter requires high electrocatalytic activities for oxygen reduction reaction and oxygen evolution reaction. Pure Co-based perovskite oxide (LaCoO3) was prepared by an auto-combustion method at a relatively low calcination temperature (640 degrees C), and La of La1-xSrxCoO3 was partially substituted with Sr to enhance its electrocatalytic activities. La0.7Sr0.3CoO3 showed excellent catalytic activity for the oxygen evolution reaction, and its activity for the oxygen reduction reaction was increased with 5 wt% Pt loading. The electrochemical activity of perovskite was investigated by linear sweep voltammetry and electrochemical impedance spectroscopy.
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