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Pt-Ni binary alloy supported CeO2 nanoparticles and preparation method thereof

A binary alloy and nanoparticle technology, applied in electrical components, battery electrodes, circuits, etc., can solve the problems of low utilization efficiency per unit mass, easy poisoning, etc., to promote anti-poisoning ability, lively properties, and improve anti-CO poisoning effect of ability

Active Publication Date: 2020-04-10
UNIV OF JINAN
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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems, the present invention solves the technical problems such as low utilization efficiency per unit mass and easy poisoning of current Pt nanostructure catalysts, and prepares a Pt-Ni binary alloy loaded with CeO 2 Preparation method to improve the performance of Pt-based nanostructured catalysts

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  • Pt-Ni binary alloy supported CeO2 nanoparticles and preparation method thereof
  • Pt-Ni binary alloy supported CeO2 nanoparticles and preparation method thereof
  • Pt-Ni binary alloy supported CeO2 nanoparticles and preparation method thereof

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Embodiment 1

[0026] A Pt-Ni Binary Alloy Supporting CeO 2 The experimental steps of the preparation method are as follows:

[0027] (1) 1 mL oleylamine corresponds to 3.44 mg CeO 2 Fully ultrasonically disperse the original solution, respectively add (a) 0 mL (b) 0.1 mL (c) 0.2 mL and (d) 0.3 mL to the centrifuge tube, 10000 r / min, 15 min, centrifuge once, use a pipette gun Aspirate the supernatant until only the precipitate remains;

[0028] (2) Weigh 8 mg of platinum acetylacetonate and 12 mg of nickel acetylacetonate into clean beakers;

[0029] (3) Measure 9 mL of oleylamine with a graduated cylinder and add it to the beaker in (2), pipette 1000 µL of oleic acid into the beaker, sonicate for 10 min until the solution is clear, and stir for 30 min;

[0030] (4) Pipette 800 µL (40%) formaldehyde solution, slowly drop it into the beaker, and continue to stir for 15 min until the solution is clear;

[0031] (5) Pipette 1 ml of the clear and transparent solution into the centrifuge tube...

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Abstract

The invention relates to Pt-Ni binary metal alloy supported cerium dioxide nanoparticles and a preparation method thereof. The Pt-Ni binary metal alloy loaded cerium dioxide is synthesized in one stepby utilizing a solvothermal method. Specifically, oleylamine oleic acid is adopted as a dispersing agent to inhibit growth of crystals, and added formaldehyde can induce CeO2 in gaps in the surface of Pt-Ni alloy, so that whether rare earth metal oxide has the effects of improving CO poisoning resistance of the catalyst and improving electro-catalysis of the catalyst or not is explored. The synthesized CeO2 with very small diameter is added to the surface of the catalyst by utilizing gaps in Pt-Ni alloy groups, and the CO poisoning resistance of the metal catalyst is improved by utilizing thestrong oxidation effect of the CeO2 on CO, so that the electro-catalytic stability of the metal catalyst is remarkably improved.

Description

technical field [0001] The invention belongs to the field of functional composite nanometer materials. Specifically, the present invention relates to an alloy loaded CeO 2 Preparation and application of functional materials. Background technique [0002] So far, proton membrane fuel cells have become an efficient energy supply for cars and other portable devices. Pt-based catalysts are still the best catalysts in PEMFC, but the high price of metal platinum is the main reason why proton membrane fuel cells are difficult to produce on a large scale. Therefore, metals of other transition elements are added to form binary or ternary metal alloys to reduce the oxygen adsorption bond energy and reduce costs, but still face problems such as high catalyst costs and low actual utilization efficiency of precious metals. [0003] In fuel cells, platinum-based catalysts mainly catalyze organic fuels and help organic fuels react. Since organic fuels contain a large amount of C elemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/92
CPCH01M4/8878H01M4/921H01M4/923Y02E60/50
Inventor 李彬生吕一品高道伟杨绍寒陈国柱
Owner UNIV OF JINAN
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