A pt-ni binary alloy loaded ceo 2 Nanoparticles and methods for their preparation

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

Active Publication Date: 2020-12-08
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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  • A pt-ni binary alloy loaded ceo <sub>2</sub> Nanoparticles and methods for their preparation
  • A pt-ni binary alloy loaded ceo <sub>2</sub> Nanoparticles and methods for their preparation
  • A pt-ni binary alloy loaded ceo <sub>2</sub> Nanoparticles and methods for their preparation

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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 oleylamine with a graduated cylinder and add it to the beaker in (2), pipette 1000 µL 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 of st...

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Abstract

The invention relates to a Pt-Ni binary metal alloy carrying cerium dioxide nanoparticles and a preparation method thereof. The present invention utilizes a solvothermal method to synthesize Pt-Ni binary metal alloy loaded cerium oxide in one step. Specifically, oleylamine oleic acid is used as a dispersant to suppress the growth of crystals, and the added formaldehyde can convert CeO 2 Inducing voids on the surface of Pt‑Ni alloys to explore whether rare earth metal oxides can improve the catalyst's resistance to CO poisoning and enhance its electrocatalytic effect. We take advantage of the voids in the Pt-Ni alloy group to synthesize very small diameter CeO 2 Added to the surface of the catalyst, using CeO 2 The strong oxidation effect on CO can be used to improve the CO poisoning resistance of metal catalysts and significantly improve their electrocatalytic stability.

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 Patents(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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