Oxide electrocatalysts spinels

The model has been successful in predicting the effective electrocatalysts of cobalt-containing oxides and spinels. 

Alkaline Fuel Cell (AFC) The electrolyte in this fuel cell is concentrated (85 wt%) KOH in fuel cells operated at high temperature ( 250°C), or less concentrated (35-50 wt%) KOH for lower temperature (<120°C) operation. The electrolyte is retained in a matrix (usually asbestos), and a wide range of electrocatalysts can be used (e.g., Ni, Ag, metal oxides, spinels, and noble metals). The fuel supply is limited to non-reactive constituents except for hydrogen. CO is a poison, and CO2 will react with the KOH to form K2CO3, thus altering the electrolyte. Even the small amount of CO2 in air must be considered with the alkaline cell. 

The complex oxides of transition metals belonging to perovskite and spinel families have also been investigated for electrocatalysis of AOR. Raghuveer et al. [113] have tested a series of rare earth cuprates with compositional formulae Ln2 xM Cui yMy 04 ii (where Ln=La and Nd M=Sr, Ca, and Ba M =Ru and Sb 0.0 < x < 0.4 and 1/=0.1) as anode electrocatalysts for MOR... 

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