Journal
JOURNAL OF POWER SOURCES
Volume 195, Issue 19, Pages 6463-6467Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2010.04.061
Keywords
Lanthanum strontium manganate; Perovskite; Hydrogen peroxide electroreduction; Alkaline electrolytes; Metal semi-fuel cell
Funding
- National Nature Science Foundation of China [20973048]
- Heilongjiang Provincial Natural Science Foundation [ZJG2007-06-02]
- Harbin Science and Technology Fund for Young Scholars [2007RFQXG023]
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
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Perovskite-type series of compounds La1-xSrxMnO3 are synthesized by a sol-gel method using Chitosan as the gelling agent. Their catalytic activity for hydrogen peroxide electroreduction in 3.0 mol dm(-3) KOH at room temperature is evaluated by means of cyclic voltammetry and chronoamperometry. Effects of annealing temperature and the ratio of La to Sr of La1-xSrxMnO3 on their catalytic performance are investigated. Among this series of compounds. La0.4Sr0.6MnO3 calcined at 650 degrees C exhibits the highest activity, which is comparable with Co3O4. An aluminum-hydrogen peroxide semi-fuel cell using La0.4Sr0.6MnO3 as cathode catalyst achieves a peak power density of 170 mW cm(-2) at 170 mA cm(-2) and 1.0 V running on 0.6 mol dm(-3) H2O2. (C) 2010 Elsevier B.V. All rights reserved.
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