Studies on the oxygen reduction catalyst for zinc–air battery electrode

Abstract In this paper, perovskite type La 0.6 Ca 0.4 CoO 3 as a catalyst of oxygen reduction was prepared, and the structure and performance of the catalysts was examined by means of IR, X-ray diffraction (XRD), and thermogravimetric (TG). Mixed catalysts doped, some metal oxides were put also used. The cathodic polarization curves for oxygen reduction on various catalytic electrodes were measured by linear sweep voltammetry (LSV). A Zn–air battery was made with various catalysts for oxygen reduction, and the performance of the battery was measured with a BS-9300SM rechargeable battery charge/discharge device. The results showed that the perovskite type catalyst (La 0.6 Ca 0.4 CoO 3 ) doped with metal oxide is an excellent catalyst for the zinc–air battery, and can effectively stimulate the reduction of oxygen and improve the properties of zinc–air batteries, such as discharge capacity, etc.

[1]  M. Balasubramanian,et al.  X-ray absorption and diffraction studies of La0.6Ca0.4CoO3 perovskite, a catalyst for bifunctional oxygen electrodes , 2002 .

[2]  Ernest Yeager,et al.  Electrocatalysts for O2 reduction , 1984 .

[3]  H. Arai,et al.  AC Impedance Analysis of Bifunctional Air Electrodes for Metal‐Air Batteries , 2000 .

[4]  J. L. Gautier,et al.  Mixed valency spinel oxides of transition metals and electrocatalysis: case of the MnxCo3−xO4 system , 1998 .

[5]  Rajindar Singh,et al.  Low-temperature synthesis of perovskite-type oxides of lanthanum and cobalt and their electrocatalytic properties for oxygen evolution in alkaline solutions , 1995 .

[6]  O. Haas,et al.  Modeling of an electrically rechargeable alkaline Zn–air battery , 2002 .

[7]  G. Xiong,et al.  Characterization of perovskite-type LaCoO3 nanocrystals prepared by a stearic acid sol--gel process , 1997 .

[8]  A. Wokaun,et al.  Pulsed laser deposition of electrochemically active perovskite films , 2002 .

[9]  N. Wu,et al.  Effect of oxygenation on electrocatalysis of La0.6Ca0.4CoO3−x in bifunctional air electrode , 2003 .

[10]  R. Singh,et al.  High surface area lanthanum cobaltate and its A and B sites substituted derivatives for electrocatalysis of O2 evolution in alkaline solution , 2002 .

[11]  Raihan Othman,et al.  Hydroponics gel as a new electrolyte gelling agent for alkaline zinc–air cells , 2001 .

[12]  S. Singh,et al.  Effects of Ni, Fe, Cu, and Cr Substitutions for Co in La0.8Sr0.2CoO3 on Electrocatalytic Properties for Oxygen Evolution , 1996 .

[13]  J. L. Gautier,et al.  Electrochemical study of nickel-aluminium-manganese spinel NixAl1-xMn2O4. Electrocatalytical properties for the oxygen evolution reaction and oxygen reduction reaction in alkaline media , 2001 .

[14]  Zidong Wei,et al.  Carbon-based air electrodes carrying MnO2 in zinc–air batteries , 2000 .

[15]  J. Prakash,et al.  Kinetic Investigations of Oxygen Reduction and Evolution Reactions on Lead Ruthenate Catalysts , 1999 .