Application of an electrocatalyst in the anode of proton exchange membrane fuel cell

A technology of proton exchange membrane and electrocatalyst, which is applied in battery electrodes, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of commercial application gap and achieve fast reduction, Excellent hydrogen oxidation activity, narrow distribution effect

Active Publication Date: 2011-12-28
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] T.J.Schmidt et al. (Document 6: On the CO tolerance of novel colloidal PdAu: carbon electrocatalysts, Journal of Electroanalytical Chemistry 501 (2001) 132) reported that PdAu catalysts have anti-CO properties, but there is still a long way to go before commercial applications

Method used

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  • Application of an electrocatalyst in the anode of proton exchange membrane fuel cell
  • Application of an electrocatalyst in the anode of proton exchange membrane fuel cell
  • Application of an electrocatalyst in the anode of proton exchange membrane fuel cell

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Experimental program
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Effect test

Embodiment 1

[0038] Embodiment 1: get 67.8mL Pd content and be the PdCl of 2.36mg / mL 2 Add hydrochloric acid solution in the three-necked flask, add 300mL ethylene glycol, then add 5mL 37wt% concentrated ammonia water, stir for 5 minutes, the solution becomes colorless, then add 10.1mL Pt content of 3.94mg / mL H 2 PtCl 6 Aqueous solution, then add 800mg Vulcan XC-72R carbon powder, disperse evenly, add 200mL NaBH drop by drop 4 10mg / mL NaBH 4 Aqueous solution, stirred for 3 hours, settled for 40 hours, centrifuged, washed, and dried in a vacuum oven at 60°C for 12 hours to obtain the catalyst 20% Pd 16 Pt 4 / XC-72.

[0039] Depend on figure 1 It can be seen from the XRD that the alloy exists in a face-centered cubic (fcc) structure, without diffraction peaks of oxides, and the grain size calculated by Scherrer's formula is 2.8nm. Depend on figure 2 It can be seen from the TEM that the metal particles of the obtained catalyst are small, and the average particle diameter obtained by s...

Embodiment 2

[0040] Embodiment 2: get 67.8mL Pd content and be the PdCl of 2.36mg / mL 2 Add the hydrochloric acid solution into the three-necked flask, add 300mL of ethylene glycol and 5mL of concentrated ammonia water, stir for 5 minutes, the solution becomes colorless, then add 7.6mL of H2O with a Pt content of 3.94mg / mL 2 PtCl 6 aqueous solution, then add 3.4 mL of RuCl with a Ru content of 2.94 mg / mL 3 Aqueous solution, then add 800mg Vulcan XC-72R carbon powder, disperse evenly, add 200mL NaBH drop by drop 4 10mg / mL NaBH 4 Aqueous solution, stirred for 3 hours, settled for 40 hours, centrifuged, washed, and dried in a vacuum oven at 80°C for 12 hours to obtain the catalyst 20% Pd 16 Pt 3 Ru 1 / XC-72.

Embodiment 3

[0041] Embodiment 3: get 80.5mL Pd content and be the PdCl of 2.36mg / mL 2 Add hydrochloric acid solution into a three-necked flask, add 300mL ethylene glycol, then add 5mL concentrated ammonia water, stir for 5 minutes, the solution becomes colorless, then add 2.5mL H2O with a Pt content of 3.94mg / mL 2 PtCl 6 Aqueous solution, then add 300mg Vulcan XC-72R carbon powder, disperse evenly, add 300mL NaBH drop by drop 4 KBH at 8mg / mL 4 Aqueous solution, stirred for 3 hours, settled for 40 hours, centrifuged, washed, and dried in a vacuum oven at 100°C for 24 hours to obtain the catalyst 40% Pd 19 Pt 1 / XC-72.

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Abstract

The application of an electro-catalyst in an anode of a proton exchange membrane fuel cell is the application of the electro-catalyst in the anode of the proton exchange membrane fuel cell. The catalyst has the following characteristics: taking PdxPty alloy and the added one or more types of IIIB, IVB, VB, VIB, VIIB, VIII and IB group as active ingredient, wherein the content of the active ingredients accounts for 5%-70% of the weight of the catalyst, the rest is conductive carrier, the content of the Pd metal accounts for 50%-95% of the total weight of the metal. In the preparation method, a liquid phase reduction method is adopted, the main active ingredient Pd metal precursor is dissolved in a mixture solution of water and alcohol, ammonia water to be used as a complexing agent is added, and then other active ingredient precursors and conductive carriers are added; and the active ingredients can be reduced by a strong reducing agent and then the electro-catalyst is loaded on the conductive conductor.

Description

technical field [0001] The invention relates to a proton exchange membrane fuel cell, in particular to the application of a PdPt-based proton exchange membrane fuel cell anode catalyst with high activity and excellent CO resistance performance. Background technique [0002] A fuel cell is a power generating device that directly converts chemical energy into electrical energy. Because it is not limited by the Carnot cycle, the fuel cell has the characteristics of high energy conversion efficiency, and the fuel cell also has the characteristics of environmental friendliness such as no noise, low emission or even zero emission, so the research of fuel cell has attracted more and more attention. . In particular, proton exchange membrane fuel cells, in addition to the general advantages of fuel cells, have become ideal candidates for portable power sources and power sources due to their advantages of low operating temperature, fast start-up, high specific power density, and smal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90B01J23/44B01J23/46B01J23/52B01J23/89
CPCY02E60/50
Inventor 张华民唐永福钟和香马原蔚徐婷金虹
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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