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PdAg alloy nanotube positive catalyst of direct direct ethanol fuel cell and preparation method of PdAg alloy nanotube positive catalyst

A technology of alloy nanometer and catalyst, applied in the field of electrochemistry, can solve the problems such as the preparation method of PdAg alloy nanotube direct ethanol fuel cell anode catalyst, and achieve the effect of performance improvement, simple greenness, cost reduction, and easy availability of raw materials

Active Publication Date: 2016-01-20
HUAQIAO UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

However, there is no preparation method of PdAg alloy nanotube direct ethanol fuel cell anode catalyst

Method used

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  • PdAg alloy nanotube positive catalyst of direct direct ethanol fuel cell and preparation method of PdAg alloy nanotube positive catalyst
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  • PdAg alloy nanotube positive catalyst of direct direct ethanol fuel cell and preparation method of PdAg alloy nanotube positive catalyst

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Embodiment 1

[0036] A) Using ethylene glycol as a solvent, prepare 0.3M PVP solution and 0.1M AgNO 3 solution and 20mM sodium chloride in ethylene glycol solution; using deionized water as solvent, prepare saturated aqueous sodium chloride solution and 0.564mM PdCl 2 solution;

[0037] B) Mix 2.5mL of ethylene glycol and 0.11mL of sodium chloride in ethylene glycol and stir at 160°C for 1h, then add 0.2mL of 0.1MAgNO 3 The solution was evenly added dropwise and the dropwise addition was completed within two minutes, and then 2.03mL of 0.1MAgNO was added dropwise at the same time. 3 solution and 2.23mL of 0.3MPVP solution were evenly added dropwise within five minutes;

[0038]C) stirring the solution obtained in step B) at 160° C. for 45 minutes, and cooling at room temperature to obtain silver nanowires;

[0039] D) Add 40 ml of deionized water to the solution containing silver nanowires obtained in step C), and then add 100 ml of freshly prepared PdCl in step A) dropwise at room tempe...

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Abstract

The invention discloses a PdAg alloy nanotube positive catalyst of a direct direct ethanol fuel cell and a preparation method of the PdAg alloy nanotube positive catalyst. The preparation method comprises the following steps of preparing a silver nanowire; dropwise adding a PdCl<2> solution into a dispersion solution of the silver nanowire; and carrying out reaction to obtain the PdAg alloy nanotube catalyst. According to the preparation method, the PdAg alloy nanotube catalyst is prepared by utilizing electrochemical replacement reaction between the silver nanowire and a Pd<2+> solution, taking the silver nanowire as a sacrifice template and controlling the concentration and the reaction condition of the PdCl<2> solution. The obtained product is high in catalytic performance and high in dispersibility and is of a hollow tubular structure, the tube diameter is uniform and is about 100 nanometers. The preparation method has the characteristics of availability in raw materials, simplicity in device process, high efficiency, rapidness, high yield, low preparation cost and the like, and is suitable for industrial production at a large scale.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a PdAg alloy nanotube direct ethanol fuel cell anode catalyst and a preparation method thereof. Background technique [0002] Direct ethanol fuel cells use ethanol as fuel, and have attracted much attention because of their advantages such as abundant fuel sources, easy portability and storage of fuel, less air pollution and low operating temperature. At present, the catalysts used in direct ethanol fuel cells are mainly based on Pt-based catalysts. However, the natural reserves of Pt are limited, which are easily poisoned by alcohol oxidation intermediates, and its price is also very high, which limits the commercialization of direct ethanol fuel cells. process. Palladium is not only cheaper than platinum, but its reserves are relatively abundant, and recent studies have shown that Pd-based catalysts have shown better alcohol oxidation performance than Pt-b...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/90B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/8825H01M4/9041Y02E60/50
Inventor 彭程杨文科刘明瑞胡永利
Owner HUAQIAO UNIVERSITY
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