Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (02): 355-360.doi: 10.3866/PKU.WHXB201111293

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Application of Nanoporous Perovskite La1-xCaxCoO3 in an Al-H2O2 Semi Fuel Cell

ZHUANG Shu-Xin1, LIU Su-Qin1, ZHANG Jin-Bao1, TU Fei-Yue1, HUANG Hong-Xia2, HUANG Ke-Long1, LI Yan-Hua1   

  1. 1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China;
    2. College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, Guangxi Province, P. R. China
  • Received:2011-09-06 Revised:2011-11-23 Published:2012-01-11
  • Contact: LIU Su-Qin
  • Supported by:

    The project was supported by the National High-Tech Research and Development Program of China (863) (2008AA031205) and Graduate Degree Thesis Innovation Foundation of Central South University, China (1343-74334000005).

Abstract: Perovskite-type series of compounds La1-xCaxCoO3 (x=0.2, 0.4, 0.5) were synthesized by a modified amorphous citrate precursor method. Their catalytic activities for hydrogen peroxide electroreduction in 3.0 mol·dm-3 KOH at room temperature were evaluated by cyclic voltammetry and galvanostatic measurements. The influences of annealing temperature and the molar ratio of La to Ca of La1-xCaxCoO3 on catalytic performance were investigated. Among the series of compounds, La0.6Ca0.4CoO3 calcined at 650 °C exhibited the highest catalytic activity. An aluminum-hydrogen peroxide semi fuel cell using La0.6Ca0.4CoO3 as cathode catalyst achieved a peak power density of 201 mW·cm-2 at 150 mA·cm-2 and 1.34 V running in 0.4 mol·dm-3 H2O2.

Key words: Aluminium semi fuel cell, Perovskite, Hydrogen peroxide electroreduction, Alkaline medium


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