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Fuel cell anode and in situ preparation method thereof

A fuel cell and in-situ preparation technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of unstable electron conduction, poor binding force, and low catalyst space utilization, and achieve large actual space utilization and high efficiency. The effect of conductivity and good service life

Active Publication Date: 2013-02-06
嘉兴市博诚新材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the problems of unstable electron conduction, poor binding force and low utilization rate of catalyst space in the anode of the prior art, the present invention provides an anode with stable electron conduction, good binding force and high catalytic space utilization rate. A kind of fuel cell anode and its in-situ preparation method

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  • Fuel cell anode and in situ preparation method thereof
  • Fuel cell anode and in situ preparation method thereof
  • Fuel cell anode and in situ preparation method thereof

Examples

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Embodiment 1

[0028] A fuel cell anode uses foamed nickel as a current collector, Pd nano short rods are distributed on the surface of the foamed nickel, and the Pd nano short rods are used as an anode catalyst of the fuel cell. Pd nanorods do not overlap each other; Pd nanoparticles do not overlap each other, such as figure 1 shown. The number of short Pd nanorods is infinite.

[0029] An in-situ preparation method of a fuel cell anode, comprising the following steps:

[0030] 1) Install nickel foam as the carrier and collector of the anode catalyst on one side of the anode plate; assemble a direct sodium borohydride fuel cell with Pt / C catalyst as the cathode, and heat the battery to 80 o C;

[0031] 2) On the anode side, first pass a mixed solution composed of polyvinylpyrrolidone, sodium chloropalladate, potassium bromide and ethanol and keep the mixed solution in the anode flow field, and then slowly pass ascorbic acid into the anode flow field Solution or sodium borohydride soluti...

Embodiment 2

[0046] Using Pt / C as the cathode, N117 membrane as the electrolyte membrane, and nickel foam as the anode current collector and catalyst substrate, a direct sodium borohydride fuel cell was assembled. Warm up the battery to 80 o C and keep warm. Pass the mixture of polyvinylpyrrolidone, sodium chloropalladate, potassium bromide and ethanol from the anode side to the anode flow field inside the battery and keep it in the anode flow field, then slowly pass into the ascorbic acid solution, and keep the reaction for about 1 hour. Rinse the anode flow field with deionized water. The short rods of Pd nanometers grow on the surface of nickel foam to form a mace-like structure. The short Pd nanorods have a diameter of about 5 nm, a length of about 20 nm, an average spacing of 50 nm, and four sides are {100} Pd Planes. Afterwards, sodium borohydride alkaline fuel is fed into the anode, and oxygen is fed into the cathode. The battery discharge test results show that the battery has ...

Embodiment 3

[0048] With Co / N / C as the cathode, N117 membrane as the electrolyte membrane, and nickel foam as the anode current collector and catalyst substrate, a direct sodium borohydride fuel cell was assembled. Warm up the battery to 80 o C and keep warm. A mixture of polyvinylpyrrolidone, sodium chloropalladate, potassium bromide and ethanol is introduced from the anode side to the anode flow field inside the battery and kept in the anode flow field, and then a dilute sodium borohydride solution is slowly introduced to keep the reaction for about After 0.5 h, the anode flow field was washed with deionized water. The short rods of Pd nanometers grow on the surface of nickel foam to form a mace-like structure. The short Pd nanorods have a diameter of about 20 nm, a length of about 500 nm, an average spacing of 200 nm, and four sides are {100} Pd Planes. Afterwards, sodium borohydride alkaline fuel is fed into the anode, and oxygen is fed into the cathode. The battery discharge test ...

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Abstract

The invention discloses a direct sodium borohydride fuel cell anode, wherein foamed nickel is taken as a current collector; Pd nano short rods are distributed at the surface of the foamed nickel, and the Pd nano short rods are used as an anode catalyst of the fuel cell. The in situ preparation method of the anode comprises the steps of: taking the foamed nickel as a carrier and the current collector of the anode catalyst arranged at one side of an anode pole plate; assembling the direct sodium borohydride fuel cell from a Pt / C catalyst as a cathode, heating the battery to 80 DEG C, firstly leading mixed liquor at one side of the anode and keeping in an anode flow field, leading ascorbic acid solution or sodium borohydride solution to the anode flow field, making the mixed liquor react with the ascorbic acid or the sodium borohydride solution, so that Pd ions in the anode flow field are restored and attached to the surface of the foamed nickel to grow so as to form the Pd nano short rods; leading deionized water to clean the anode flow field, and obtaining the fuel cell anode. The fuel cell anode has the advantages of stable electronic transmission stability of the anode, good binding force, and high utilization rate of a catalytic space.

Description

technical field [0001] The technology relates to a fuel cell anode and a preparation method thereof. Background technique [0002] Fuel cell is a power generation technology that directly converts chemical energy stored in fuel into electrical energy. Due to its advantages of high energy conversion efficiency, low emission, no pollution and no noise, it is considered to be the next generation of thermal power, hydraulic power and nuclear power. The fourth power generation method outside. [0003] Direct sodium borohydride fuel cell is a kind of direct liquid fuel cell with proton exchange membrane as electrolyte and sodium borohydride as fuel. In addition to the advantages shared by other fuel cells, it also has unique advantages. For example: normal temperature use, simple structure, convenient fuel carrying and replenishment, good mobility, very suitable as a small mobile and portable power supply. Moreover, because the used fuel sodium borohydride has good reduction ac...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/88
CPCY02E60/50
Inventor 秦海英王娟季振国倪华良迟洪忠赵淑敏何燕刘嘉斌
Owner 嘉兴市博诚新材料股份有限公司
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