A kind of direct sodium borohydride fuel cell anode and preparation method thereof

A fuel cell and sodium borohydride technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as poor binding force, low catalyst space utilization, and unstable electron conduction, achieving high conductivity and large practical space Utilization, the effect of good electronic conductivity

Active Publication Date: 2016-01-20
浙江宁松热能锅炉设备股份有限公司
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] In order to overcome the disadvantages of unstable electron conduction, poor binding force and low utilization rate of catalyst space in the existing anode, the present invention provides a direct sodium borohydride fuel with stable electron conduction, good binding force and high catalyst space utilization rate Battery anode and preparation method thereof

Method used

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  • A kind of direct sodium borohydride fuel cell anode and preparation method thereof
  • A kind of direct sodium borohydride fuel cell anode and preparation method thereof
  • A kind of direct sodium borohydride fuel cell anode and preparation method thereof

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Embodiment 1

[0026] combined with figure 1 , 2

[0027] A direct sodium borohydride fuel cell anode, using foamed nickel 3 as a current collector, the foamed nickel 3 is covered with corrosion pits, the size of the corrosion pits is on the order of nanometers, and Pd nanorods 1 or Pd nanorods 1 or Pd nanorods are grown in each corrosion pit. The particle 2, the Pd nanorod 1 or the Pd nanoparticle 2 is used as the anode catalyst of the fuel cell.

[0028] The Pd nanorods 1 do not overlap each other; the Pd nanoparticles 2 do not overlap each other.

[0029] Pd nanorod 1 has four sides, each of which is {100} Pd Planes.

[0030] The Pd nanorod 1 has a diameter of 3-50 nm, a length of 20-500 nm, and a spatial shape of a cuboid.

[0031] Pd nanoparticle 2 has six surfaces, each of which is {100} Pd Planes.

[0032] The spatial shape of Pd nanoparticles 2 is close to a cube, and the side length is 2~20nm;

[0033] Manufacture the preparation method of described direct sodium borohydride...

Embodiment 2

[0044] Dip nickel foam in dilute hydrochloric acid solution and corrode for 1~4h, take it out, clean it and dry it. Afterwards, the corroded nickel foam was immersed in a mixture of polyvinylpyrrolidone, sodium chloropalladate, potassium bromide, ethanol and ascorbic acid at 60 o C kept the reaction for 12h. Take out the nickel foam covered with Pd nanorods on the surface, rinse it with clean water, dry it naturally, and cut it into an area of ​​2*3cm. The diameter of the Pd nanorods is 3~50nm, the length is 20~500nm, and the spatial shape is a cuboid. Four Both sides are {100} Pd Planes. A direct sodium borohydride fuel cell is assembled with Pt / C as cathode, N117 membrane as electrolyte membrane, nickel foam of the present invention as anode current collector and catalyst. The battery discharge test results after feeding sodium borohydride alkaline fuel and oxygen show that the battery has good electrical output performance, and the maximum output power density exceeds 60...

Embodiment 3

[0046] Dip nickel foam in dilute sulfuric acid solution and corrode for 0.5~6h, take it out, clean it and dry it. Afterwards, the corroded nickel foam was immersed in a mixture of polyvinylpyrrolidone, sodium chloropalladate, potassium bromide, ethanol and sodium borohydride at 10 o C kept the reaction for 0.1h. Take out the nickel foam covered with Pd nanoparticles on the surface, rinse it with clean water, dry it naturally, and cut it into an area of ​​2*3cm. The spatial shape of the Pd nanoparticles is close to a cube, the side length is 2~20nm, and the six sides are {100} Pd Planes. A direct sodium borohydride fuel cell is assembled with Pt / C as cathode, N117 membrane as electrolyte membrane, nickel foam of the present invention as anode current collector and catalyst. The battery discharge test results after feeding sodium borohydride alkaline fuel and oxygen show that the battery has good electrical output performance, and the maximum output power density exceeds 45mW / ...

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Abstract

The invention discloses a direct sodium borohydride fuel cell anode. Etching pits are fully distributed in a foamed nickel current collector, wherein the dimensions of the etching pits are in nanometer scale; Pd nanorods or PD nanoparticles grow inside the etching pits and are used as anode catalyst of the fuel cell. The manufacture method for the anode structure comprises the steps of: putting the foamed nickel in a dilute acid solution for a period of time, thus generating the etching pits in the surface of metal Ni of the foamed nickel, wherein the diameters and the depths of the etching pits are in nanometer scale; taking the foamed nickel out of the dilute acid solution, washing, and drying the foamed nickel; putting the foamed nickel in a mixed solution of polyvinyl pyrrolidone, sodium chloropalladate, potassium bromide, ethanol and a reducing agent for reacting for 0.1-12h at 10 DEG C to 200 DEG C; taking out the foamed nickel, washing and drying the foamed nickel, and cutting the washed and dried foamed nickel to be in proper dimension as the anode. The direct sodium borohydride fuel cell anode has the advantages of stable electron conduction, good binding force and high catalyst space utilization rate.

Description

technical field [0001] The technology relates to an electrode of a fuel cell, in particular to an anode used in a direct sodium borohydride fuel cell 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 powe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/92H01M4/88
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 浙江宁松热能锅炉设备股份有限公司
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