Bent porous ultrathin flaky bifunctional PdCu or PdCu/C catalyst as well as preparation method and application thereof
A catalyst and ultra-thin sheet technology, applied in the direction of electrical components, battery electrodes, circuits, etc., can solve the problems of high cost of Pt-based noble metals, further improvement of catalytic activity, slow kinetics, etc., to improve electrocatalytic oxidation activity and catalytic Stability, excellent catalytic activity, and the effect of improving utilization
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[0045]A preparation method for a bifunctional PdCu metallenes catalyst for high-efficiency fuel cells, specifically comprising the following steps:
[0046] (a) A certain amount of palladium and copper metal precursor, reducing agent W(CO) 6 Add them together into a 30mL reaction bottle, add an appropriate solvent and HAc solution, mix them uniformly by ultrasonic to form a reaction system, heat in an oil bath, and centrifuge to obtain a bifunctional PdCu metallenes catalyst;
[0047] (b) loading the PdCu metallens catalyst prepared in step (a) on carbon powder, carrying out pickling, the pickling temperature is 60-80°C, the heating time is 10-14h, suction filtration and vacuum drying to obtain the catalyst, The catalyst is an oxygen reduction catalyst and an electro-oxidation catalyst, named as PdCu metallenes / C.
[0048] Wherein, in step (a), the palladium metal precursor is Pd(acac) 2 , the copper metal precursor Cu(acac) 2 , the reducing agent is acetic acid and W(CO) ...
Embodiment 1
[0053] A bifunctional PdCu metallens catalyst for high-efficiency fuel cells, the catalyst is a porous and highly curved ultrathin sheet structure, prepared by the following steps:
[0054] (1) Preparation of catalyst
[0055] 0.032mmol of Pd(acac) 2 (purchased from Shanghai Aladdin Biochemical Technology Co., Ltd., the same below), 0.015mmol of Cu(acac) 2 (purchased from Shanghai Aladdin Biochemical Technology Co., Ltd., the same below), 0.08mmol of W(CO) 6 (purchased from Shanghai Aladdin Biochemical Technology Co., Ltd., the same below) was added to 10mL of DMF, and the solution was ultrasonically dispersed for about 20min, and then 5mL of acetic acid (purchased from Sinopharm Shanghai Chemical Reagent Co., Ltd., the same below) was added. , placed in an oil bath at 60°C for 6h to react, and a bifunctional PdCu metallenes catalyst material was obtained.
[0056] (2) Catalyst post-treatment
[0057] Load the prepared PdCu metallens catalyst on 12.7mg of activated carbon ...
Embodiment 2
[0063] A bifunctional PdCu metallens catalyst for high-efficiency fuel cells, the catalyst is a porous and highly curved ultrathin sheet structure, prepared by the following steps:
[0064] (1) Preparation of catalyst
[0065] 0.032mmol of Pd(acac) 2 , 0.022mmol of Cu(acac) 2 , 0.08mmol of W(CO) 6 Added into 10mL of DMF, ultrasonic for about 20min to disperse the solution evenly, then added 5mL of acetic acid, placed in an oil bath at 60°C for 6h for reaction, to obtain bifunctional PdCu metallenes catalyst material.
[0066] (2) Catalyst post-treatment
[0067] Load the prepared PdCu metallens catalyst on 12.3 mg of activated carbon powder, pickle with acetic acid, the pickling temperature is 60°C, and the heating time is 12h. 12h to obtain the catalyst.
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