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Direct sodium borohydride fuel cell using ferrocene as cathode catalyst

A cathode catalyst, fuel cell technology, applied in fuel cells, battery electrodes, circuits, etc., can solve the problems of poor catalyst performance and less research, achieve high electromotive force and energy density, facilitate popularization, and reduce costs.

Inactive Publication Date: 2010-10-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, research on low-cost catalysts mainly focuses on transition metal atom cluster catalysts, macrocyclic compound catalysts containing transition metals in the center, and metal carbide catalysts; in addition, nitrides, sulfides, borides, and silicides are used as low-temperature fuels. Battery catalysts have also been reported, but the performance of these catalysts is relatively poor, and there are relatively few studies

Method used

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  • Direct sodium borohydride fuel cell using ferrocene as cathode catalyst
  • Direct sodium borohydride fuel cell using ferrocene as cathode catalyst
  • Direct sodium borohydride fuel cell using ferrocene as cathode catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Dissolve ferrocene in the solvent with tetrahydrofuran as the solvent, the mass ratio of solvent to ferrocene is 1:0.1, and then add perfluorosulfonic acid-based resin (Nafion) in the ferrocene solution at a mass ratio of 1:2 The solution is used as a dispersant, and the composition of the perfluorosulfonic acid-based resin solution is: Nafion: anhydrous methanol: anhydrous ethanol: water in a ratio of 5:10:5:8, thereby preparing a ferrocene solution.

[0034] Acetylene black is added to the ferrocene solution, and the mass ratio range of the ferrocene solution to the acetylene black is 1:0.1. After being uniformly stirred by ultrasonic waves, it is filtered, washed with distilled water, deionized water or pure water, and dried to obtain a ferrocene-carbon black catalyst.

[0035] Mix the above-mentioned ferrocene-carbon black catalyst with Nafion solution and water, the mass ratio is catalyst: Nafion solution: water is 1:5:10, prepared into a slurry, and then evenly co...

Embodiment 2

[0037] Embodiment 2: the preparation of ferrocene-phthalocyanine cobalt cathode

[0038] Use cyclohexane as solvent to dissolve ferrocene and cobalt phthalocyanine in the solvent, the mass ratio of solvent to ferrocene and cobalt phthalocyanine is 1:0.5:0.5, and then in the ferrocene-cobalt phthalocyanine solution press Add perfluorosulfonic acid-based resin (Nafion) solution at a mass ratio of 1:4 as a dispersant, and the composition of perfluorosulfonic acid-based resin solution is: Nafion: anhydrous methanol: anhydrous ethanol: water = 10:30:30: 30, thereby preparing a ferrocene-cobalt phthalocyanine solution.

[0039] Add acetylene black to the ferrocene-cobalt phthalocyanine solution, and the mass ratio of the solution to carbon black is 1:5. After being uniformly stirred by ultrasonic waves, it is filtered, washed with distilled water, deionized water or pure water, and dried to obtain a ferrocene-cobalt phthalocyanine-carbon black catalyst.

[0040] Mix the above-ment...

Embodiment 3

[0042] Embodiment 3: the preparation of ferrocene-platinum carbon cathode

[0043] Dissolve ferrocene in the solvent with carbon tetrachloride as the solvent, and the mass ratio of solvent to ferrocene is 1:2.5 to obtain the ferrocene solution.

[0044] The hydrophobically treated platinum-carbon catalyst (containing 10wt% platinum), with polytetrafluoroethylene emulsion (10wt%) as a binder, is prepared into a slurry at a mass ratio of 1:10, and coated on the hydrophobically treated After being dried in the air, it was calcined in a muffle furnace at 350°C for one hour at 350°C in a nitrogen atmosphere, and then cooled naturally to room temperature to obtain a cathode substrate. Then dip into the ferrocene solution and dry to form a hydrophobic ferrocene-platinum carbon cathode.

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Abstract

The invention relates to fuel cell technology, and aims at providing an immediate sodium borohydride fuel cell with ferrocene as a cathode catalyst. The immediate sodium borohydride fuel cell takes alkaline sodium borohydride water solution which contains 10wt% of NaBH4 and 5wt% of NaOH as a fuel, takes air or pure oxygen as an oxidant, and takes perfluorinated sulfonic acid resin as an electrolyte; an anode catalyst is one or a mixture of a plurality of components chosen from noble metal catalysts Pt, Pd, Au and Ag and alloys thereof and non-noble metal catalysts Ni, Fe, Co, Mn, Cr and Ti and alloys thereof, and hydrogen storage material MnNi5-xMx and Zr1-xTixNi2-yNy, wherein, the range of x is 0.01-0.5 and the range of y is 0.01-1.5; the cathode of the fuel cell takes the ferrocene as acathode catalyst. The immediate sodium borohydride fuel cell has the beneficial effects that: the sodium borohydride has higher hydrogen storage density, the noble metals are not needed as the anode electrode catalysts when an electrochemical oxidation reaction is carried out, and the immediate sodium borohydride fuel cell has higher electromotive force and higher energy density, which can effectively reduce the cost of the fuel cell, solves the problem of lack of platinum resources, and is useful for the popularization of the fuel cell technology.

Description

technical field [0001] The invention relates to a fuel cell technology, in particular to a direct sodium borohydride fuel cell using ferrocene as a cathode catalyst. Background technique [0002] In recent years, due to innovative breakthroughs in fuel cell (Fuel Cell) technology, coupled with multiple pressures such as environmental protection issues and energy shortages, governments of various countries and industries such as automobiles, electric power, and energy have gradually attached importance to the development of fuel cell technology. Fuel cell is a new power generation technology with high efficiency, low pollution, and diversified energy sources. The power generation system of fuel cell is not only lower in cost than traditional fossil fuels, but also has the advantages of cleanliness and high efficiency. It can also combine nuclear energy, biomass energy, and solar energy. , wind power and other power generation technologies to diversify, renew and sustain the u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/88H01M8/00H01M8/1009
CPCY02E60/50
Inventor 李洲鹏刘宾虹
Owner ZHEJIANG UNIV