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MXene loaded PtRhFe ternary alloy catalyst, and preparation method and formula thereof

A ternary alloy and catalyst technology, applied in the field of electrochemical catalysis, can solve the problems of scarce reserves and high cost of platinum

Active Publication Date: 2019-06-28
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of platinum is high and the reserves are scarce, which urgently needs to be improved on the basis of existing platinum catalysts to increase the utilization rate of platinum and reduce costs. The present invention solves this problem

Method used

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  • MXene loaded PtRhFe ternary alloy catalyst, and preparation method and formula thereof
  • MXene loaded PtRhFe ternary alloy catalyst, and preparation method and formula thereof

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Embodiment 1

[0060] A preparation method of a porous spherical PtRhFe ternary alloy catalyst supported by two-dimensional material MXene nanosheets, the specific operation steps are as follows:

[0061] Step 1, measure 10 milliliters of oleylamine with a graduated cylinder, pour it into a 50 milliliter polytetrafluoroethylene hydrothermal kettle and carry out magnetic stirring; Weigh 26.5 milligrams (0.0513 millimoles) of chloroplatinic acid powder, ) of rhodium chloride powder, 18 mg (0.0509 mmol) of iron acetylacetonate powder, 350 mg (0.9604 mmol) of cetyltrimethylammonium bromide powder and 100 mg of Ti 3 C 2 Add MXene powder one by one (the order of adding each component is not strictly required) into a 50 ml polytetrafluoroethylene hydrothermal kettle and stir until the solution is evenly mixed;

[0062] Step 2. After the solution in step 1 is fully stirred and mixed evenly, seal the shell of the hydrothermal kettle tightly to carry out hydrothermal reaction. The hydrothermal temper...

Embodiment 2

[0067] A preparation method of a porous spherical PtRhFe ternary alloy catalyst supported by two-dimensional material MXene nanosheets, the specific operation steps are as follows:

[0068] (1) Measure 10 milliliters of oleic acid with a graduated cylinder, pour it into a 50 milliliter polytetrafluoroethylene hydrothermal kettle and carry out magnetic stirring; weigh 20.2 milligrams (0.0513 millimoles) of platinum acetylacetonate powder, 2.94 milligrams (0.0111 millimoles) ) of rhodium chloride powder, 10 mg (0.0617 mmol) of ferric chloride powder, 200 mg (0.625 mmol) of cetyltrimethylammonium chloride powder and 100 mg of Ti 2 Add C MXene powder one by one to 50 milliliters of polytetrafluoroethylene hydrothermal kettle and stir until the solution is evenly mixed;

[0069] (2) After the solution in step (1) is fully stirred and mixed evenly, seal the shell of the hydrothermal kettle tightly for hydrothermal reaction, the hydrothermal temperature is 170 degrees Celsius, the ho...

Embodiment 3

[0072] A preparation method of a porous spherical PtRhFe ternary alloy catalyst supported by two-dimensional material MXene nanosheets, the specific operation steps are as follows:

[0073] (1) Measure 10 milliliters of dimethylformamide with a graduated cylinder, pour it into a 50 milliliter polytetrafluoroethylene hydrothermal kettle and carry out magnetic stirring; weigh 37.4 milligrams (0.0769 millimoles) of potassium chloroplatinate powder, 2.46 milligrams (0.0085 mmol) of rhodium nitrate powder, 6.17 mg (0.0256 mmol) of iron nitrate powder, 200 mg (0.621 mmol) of tetrabutylammonium bromide powder and 200 mg of Ti 3 C 2 Add MXene powder one by one to 50 milliliters of polytetrafluoroethylene hydrothermal kettle and stir until the solution is evenly mixed;

[0074] (2) After the solution in step (1) is fully stirred and mixed evenly, the shell of the hydrothermal kettle is tightly sealed for hydrothermal reaction, the hydrothermal temperature is 150 degrees Celsius, the h...

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Abstract

The invention discloses a preparation method of a MXene loaded PtRhFe ternary alloy catalyst. The method comprises that an organic solvent, a platinum source, a rhodium source, an iron source, a substrate material MXene powder and a surfactant are mixed and stirred uniformly, and make hydrothermal reaction; and centrifugation, washing, drying and grinding are carried out to obtain dry powder, namely a 2D material of MXene nanosheet loaded porous spherical PtRhFe ternary alloy particle product. The technology is simple, the repeatability is high, the prepared has an excellent enthanol oxidizability in an electrolyte including 1.0 mole / L potassium hydrate and 1.0 mole / L ethanol, and the peak current density can reach 3407milliampere / milligram which is 4.2 times of the peak current density ofa commercial platinum carbon catalyst in the platinum capacity of 46.7%. The catalyst can be widely applied to field of electrocatalysis enthanol oxidation, and enables large-scale commercializationof direct enthanol fuel cells.

Description

technical field [0001] The invention belongs to the field of electrochemical catalysis, and in particular relates to a preparation method of a porous spherical PtRhFe ternary alloy catalyst supported by two-dimensional material MXene nanosheets, a catalyst prepared by the preparation method and a formula used for preparing the catalyst. Background technique [0002] In the face of increasingly severe environmental pollution and energy shortages, we urgently need to develop new clean energy to replace existing fossil fuels. Direct ethanol fuel cell is a new type of clean energy device, which has the advantages of high energy density, environmental friendliness and long cycle life. However, the complete oxidation of ethanol to carbon dioxide requires breaking the carbon-carbon bond in the ethanol molecule, which is difficult to occur at room temperature. Therefore, efficient and stable catalysts are crucial for large-scale commercialization of direct ethanol fuel cells. [0...

Claims

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Application Information

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IPC IPC(8): H01M4/92H01M8/1011B01J23/89B01J27/22B01J27/24B01J35/00B01J37/10B82Y30/00B82Y40/00
CPCY02E60/50
Inventor 王成新王鹏崔浩
Owner SUN YAT SEN UNIV
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