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A technology of proton exchange membrane and fuel cell, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problem of low activity, and achieve the effect of simple process flow, high reduction activity and low manufacturing cost
Active Publication Date: 2015-10-21
TIANNENG BATTERY GROUP
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Embodiment 1
[0016] Select commercially available activated carbon (Fluka), PdCl 2 (Aldrich, 99.999%), NaH 2 PO 2 ·H 2 O (Aldrich, > 99%). Another commercially available 2.0wt% Pt-C, 2.0wt% Pd-C sample was used as a control.
[0017] (1) Take 30 mg of activated carbon and dry it in vacuum at 100° C. for 2 hours.
[0018] (2) Weigh 2.12 grams of NaH 2 PO 2 ·H 2 O, dissolved in 100ml deionized water (DI-H 2 O) configured as 0.2M NaH 2 PO 2 aqueous solution (Solution A).
[0019] (3) Weigh 35.5mg PdCl 2 , dissolved in 100ml deionized water (DI-H 2 O) formulated as 2mM PdCl 2 aqueous solution (Solution B).
[0020] (4) After immersing 30 mg of dried activated carbon in 2 ml of solution A for 10 seconds, let it stand in the air for 1 hour.
[0021] (5) After immersing in 1.7 ml of solution B for 10 seconds, let stand in air for 1 hour.
[0022] (6) In a vacuum environment, after washing the material twice with deionized water, let it stand for 2 hours, and continue to treat it i...
Embodiment 2
[0029] Select commercially available activated carbon (Fluka), PdCl 2 (Aldrich, 99.999%), N 2 h 4 ·H 2 O (Sigma-Aldrich, 64-65%, regent grade, 98%). Another commercially available 2.0wt% Pt-C and 2.0wt% Pd-C samples were used for comparison.
[0030] (1) Get the gac of 30mg, dry 2 hours under 100 ℃ in vacuum.
[0031] (2) Weigh 1.6ml N 2 h 4 ·H 2 O, dissolved in 100ml deionized water (DI-H 2 O) is configured as 0.2M N 2 h 4 aqueous solution (Solution A).
[0032] (3) Weigh 35.5mg PdCl 2 , dissolved in 100ml deionized water (DI-H 2 O) formulated as 2mM PdCl 2 aqueous solution (Solution B).
[0033] (4) After immersing 30 mg of dried activated carbon in 2 ml of solution A for 10 seconds, it was left to stand in the air for 1 hour.
[0034] (5) After immersing in 1.7 ml of solution B for 10 seconds, let stand in air for 1 hour.
[0035] (6) In a vacuum environment, wash the material twice with deionized water, let it stand for 2 hours, and continue to treat it in ...
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Abstract
The invention discloses a preparation method of a proton exchange membrane fuel cellanodeoxygen reduction electrocatalyst. The method includes the steps of: soaking a carbon based material into a reducing agent water solution, taking the carbon based material out, then soaking the carbon based material into a metalsalt water solution, then taking the material out and carrying out reaction, then performing washing and vacuum drying, thus obtaining a finished product. According to the method provided by the invention, metal atoms are deposited on the surface of the carbon based material by means of in-situ reduction, calcinations is not needed, the metal nanoparticles in the catalyst are in a non-lattice structure and have high reduction activity. Also, the technological process is simple, and the manufacturing cost is low.
Description
technical field [0001] The invention relates to the technical field of fuel cells, in particular to a preparation method of an anodeoxygen reduction electrocatalyst of a proton exchange membrane fuel cell. Background technique [0002] Proton exchange membrane (PEM) fuel cell (FC) cells use hydrogen and oxygen in the air as fuel, and water is the only product of the reaction. Its basic working principle is that hydrogen molecules undergo an oxidation reaction on the electrocatalyst material (usually Pt-C) in the negative electrode and are decomposed into an electron and a hydrogenproton. The electron flows into the positive electrode through an external line to form a current, and the hydrogen proton passes through the PEM. Flowing into the positive electrode, the oxygen molecules of the positive electrode undergo a reduction reaction on the positive electrode electrocatalyst (usually Pt-C) to generate water molecules. Proton exchange membrane (PEM) fuel cells (FCs) have ...
Claims
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