Composite catalyst and its preparation method and application
A composite catalyst and compound technology, applied in the direction of fuel cell-type half-cells and primary battery-type half-cells, structural parts, electrical components, etc., can solve problems such as expensive, difficult to use on a large scale, and difficult to use on a large scale , to achieve the effect of low cost and simple synthetic route
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Embodiment 1
[0031] In this example, a composite catalyst Co 3 O 4 / C-P / MnO 2 The preparation method includes the following steps:
[0032] (1) Add graphite powder to 10% K 2 CO 3 The solution (the mass-volume ratio is 05g / ml), stir for 10h, and then thermostatically treat at 200°C for 5h to obtain substance A;
[0033] (2) Mix substance A and triphenylphosphine with a mass ratio of 1:1 uniformly, and treat them at 800°C for 3 hours under a nitrogen atmosphere to obtain substance B;
[0034] (3) Mix cobalt acetate, manganese acetate, and oxalic acid at a molar ratio of 1:1:2, grind for 2 hours, and then heat in a water bath at a temperature of 80°C for 8 hours to obtain substance C;
[0035] (4) Mix substance B and substance C uniformly in a mass ratio of 1:3, then treat them in a muffle furnace at 350°C for 8 hours, and finally ball mill for 50 hours to prepare catalyst Co. 3 O 4 / C-P / MnO 2 .
[0036] The above composite catalyst Co 3 O 4 / C-P / MnO 2 It can be used to prepare metal-air batteries or ...
Embodiment 2
[0039] In this example, a composite catalyst Co 3 O 4 / C-P / MnO 2 The preparation method includes the following steps:
[0040] (1) Add carbon fiber to 15% KOH solution, stir for 15h, and then thermostat at 250°C for 7h to obtain substance A;
[0041] (2) Mix substance A and hydrogen phosphate diamine at a mass ratio of 1:3 uniformly, and treat them at 600°C for 3 hours under a nitrogen atmosphere to obtain substance B;
[0042] (3) Mix cobalt carbonate, manganese carbonate, and sodium oxalate at a molar ratio of 1:1:2, grind for 1.5 hours, and then heat in a water bath at a temperature of 60°C for 10 hours to obtain substance C;
[0043] (4) Mix substance B and substance C evenly in a mass ratio of 1-3:3-1, and then treat them in a muffle furnace at a constant temperature of 300°C for 9 hours, and finally ball mill for 60 hours to obtain catalyst Co. 3 O 4 / C-P / MnO 2 .
[0044] The above composite catalyst Co 3 O 4 / C-P / MnO 2 It can be used to prepare metal-air batteries or fuel cells. ...
Embodiment 3
[0047] In this example, a composite catalyst Co 3 O 4 / C-P / MnO 2 The preparation method includes the following steps:
[0048] (1) Add acetylene black to a 15% hydrogen peroxide solution, stir for 20 hours, and then treat at 300°C for 4 hours to obtain substance A;
[0049] (2) Mix substance A and hydrogen phosphate diamine at a mass ratio of 2:1, and treat them at 900°C for 1 hour under a nitrogen atmosphere to obtain substance B;
[0050] (3) Mix cobalt carbonate, manganese carbonate, and potassium oxalate at a molar ratio of 1:1:2, grind for 2.5 hours, and then heat in a water bath at a temperature of 90°C for 6 hours to obtain substance C;
[0051] (4) Mix substance B and substance C evenly in a mass ratio of 1-3:3-1, and then treat them in a muffle furnace at a constant temperature of 250°C for 6 hours, and finally ball mill for 40 hours to obtain catalyst Co. 3 O 4 / C-P / MnO 2 .
[0052] The above composite catalyst Co 3 O 4 / C-P / MnO 2 It can be used to prepare metal-air batteries ...
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