Preparation method of perovskite type catalyst used for metal-air battery
A metal-air battery, perovskite-type technology, applied to fuel cell-type half-cells and secondary battery-type half-cells, battery electrodes, circuits, etc., can solve problems such as high price and simplify the preparation process and difficulty. , the effect of reducing costs
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[0015] The preparation method of perovskite type catalyst for metal-air battery of the present invention, the chemical formula of described perovskite type catalyst is: La x Y (1-x) ZO 3 ; In the formula, 0
[0016] In step (a), the volume ratio of the water and ethylene glycol is 1-10:1. Th...
Embodiment 1
[0020] This embodiment provides a method for preparing a perovskite-type catalyst for a metal-air battery. The chemical formula of the perovskite-type catalyst is: La 0.6 Sr 0.4 MnO 3 , which includes the following steps:
[0021] (a) Take by weighing 0.6mol lanthanum nitrate, 0.4mol strontium nitrate and 1mol manganese nitrate, dissolve in 1000ml water respectively, then add 1000ml ethylene glycol to form a mixed solution;
[0022] (b) Add 2mol citric acid to the mixed solution, adjust its pH value to 6-7 with ammonia water, and carry out stirring and complexation; then move to a constant temperature water bath and stir at 90°C until a gel is formed, and then place the gel in Dry in a drying oven at 150°C and grind into powder;
[0023] (c) Calcining the powder at 350° C. for 10 hours.
Embodiment 2
[0025] This example provides a method for preparing a perovskite-type catalyst for metal-air batteries. The preparation process is basically the same as that in Example 1, except that in step (a), 0.4 mol of lanthanum nitrate, 0.6mol strontium nitrate and 1mol manganese nitrate, the final catalyst is La 0.4 Sr 0.6 MnO 3 .
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