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Preparation method of Pd-PdH0. 706-PdO-NiOxHy/C core-shell electrocatalyst

An electrocatalyst, 0.048gvulcanxc-72r technology, applied in circuits, electrical components, battery electrodes, etc., can solve problems such as poor control of nanoparticle size and distribution

Inactive Publication Date: 2020-07-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantage of the impregnation method is poor control over the size and distribution of nanoparticles

Method used

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  • Preparation method of Pd-PdH0. 706-PdO-NiOxHy/C core-shell electrocatalyst
  • Preparation method of Pd-PdH0. 706-PdO-NiOxHy/C core-shell electrocatalyst
  • Preparation method of Pd-PdH0. 706-PdO-NiOxHy/C core-shell electrocatalyst

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Embodiment approach 1

[0023] Embodiment 1: In the second step of the preparation process, the amount of 1M KOH aqueous solution is 8ml; other preparation conditions remain unchanged. The catalyst prepared by this embodiment is denoted as: Pd-PdH 0.706 @PdO-NiO x h y / C-8.

Embodiment approach 2

[0024] Embodiment 2: In the second step of the preparation process, the amount of 1M KOH aqueous solution is 9 ml; other preparation conditions remain unchanged. The catalyst prepared by this embodiment is denoted as: Pd-PdH 0.706 @PdO-NiO x h y / C-9.

Embodiment approach 3

[0025] Embodiment 3: In the second step of the preparation process, the amount of 1M KOH aqueous solution is 10ml; other preparation conditions remain unchanged. The catalyst prepared by this embodiment is denoted as: Pd-PdH 0.706 @PdO-NiO x h y / C-10.

[0026] Embodiment 4: In the second step of the preparation process, the amount of 1M KOH aqueous solution is 11 ml; other preparation conditions remain unchanged. The catalyst prepared by this embodiment is denoted as: Pd-PdH 0.706 @PdO-NiO x h y / C-11.

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Abstract

The invention discloses a preparation method of a Pd-PdH0. 706-PdO-NiOxHy / C core-shell electrocatalyst. The preparation method is a solvothermal method, and comprises the following steps of under an alkaline condition, taking tert-butyl alcohol as a solvent, heating by using a drying oven at 180 DEG C to prepare the Pd-PdH0. 706-coated PdO-NiOxHy / C core-shell composite catalyst; representing the morphology, structure, chemical state and composition of the catalyst by a transmission electron microscope, the X-ray diffraction, the X-ray photoelectron spectroscopy and the inductively coupled plasma emission spectroscopy; at 25 DEG C, and testing the electrocatalytic activity of the electrocatalyst on the methanol and ethanol under the alkaline condition. Results show that the activity of theobtained catalyst is the highest when the dosage of the 1M KOH solution is 10ml, and the peak current densities of the catalyst for catalyzing the electrochemical oxidation of methanol and ethanol respectively reach 592.1 mA mg <-1> Pd and 1504.0 mA mg <-1> Pd.

Description

technical field [0001] The present invention relates to a kind of Pd-PdH 0.706 @PdO-NiO x h y The invention discloses a method for preparing a / C core-shell electrocatalyst, which belongs to the field of fuel cell material science and technology and the field of electrocatalyst technology. Background technique [0002] Direct methanol fuel cells have attracted more and more attention worldwide due to their high efficiency, no pollution, excellent performance, and ease of use. Although Pt catalysts have good activity and stability, as a material in methanol oxidation, Pt catalysts can be occupied by CO as reactive sites, resulting in hindered reaction kinetics. Moreover, the high cost of Pt is also one of the obstacles restricting its industrial application. [0003] Due to the excellent performance of Pd catalysts and its potential tunability in electrocatalysis, Pd nanocatalysts have been extensively studied in alcohol fuel cells. Compared with Pt catalyst, Pd catalyst...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/92B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/9016H01M4/923H01M4/926Y02E60/50
Inventor 闫少辉闻登科马旭莉岳秀萍梁美生高利珍
Owner TAIYUAN UNIV OF TECH
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