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Low-temperature solid oxide fuel cell

A solid oxide and fuel cell technology, applied in fuel cells, battery electrodes, circuits, etc., can solve problems such as short circuits, achieve high oxygen ion conductivity, reduce electrode polarization loss, and increase output power

Inactive Publication Date: 2019-05-24
NANJING XIAOZHUANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a semiconductor material is used as the electrolyte material of a fuel cell, it is easy to think of a short circuit phenomenon. Because of this, materials with semiconductor properties have not been used in fuel cells so far.

Method used

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Embodiment Construction

[0030] According to the following examples, the present invention can be better understood. However, those skilled in the art can easily understand that the content described in the embodiments is only used to illustrate the present invention, and should not and will not limit the present invention described in detail in the claims.

[0031] Such as figure 1 As shown, the nickel foam coated on the surface constitutes a symmetrical electrode. The cathode and anode of the fuel cell of the present invention use foam nickel coated on the surface, and the core electrolyte layer is a composite material of LNO and SDC. Therefore, the structure of the fuel cell is: foam Nickel / / NCAL / / LNO / SDC / / NCAL / / Nickel foam; where NCAL is Ni 0.8 C0 0.15 Al 0.05 LiO 2-δ Material, SDC is Ce prepared by the invention 0.8 Sm 0.2 O 1.9 Material or SDC prepared by existing public methods; LNO is LaNiO prepared by the present invention 3 Material or LNO prepared by the existing public method, and foamed nick...

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Abstract

The invention discloses a low-temperature solid oxide fuel cell. The cathode and anode of the fuel cell are made of nickel foam coated with NCAL; and the electrolyte layer of the fuel cell is made ofan LNO / SDC composite material. The structure of the fuel cell of the present invention is foam nickel / / NCAL / / LNO / SDC / / NCAL / / foam nickel. According to the low-temperature solid oxide fuel cell of the invention, a composite material composed of LNO of a perovskite structure and ionic conductor samarium-doped cerium oxide is adopted as the electrolyte layer of the low-temperature solid oxide fuel cell, and therefore, electrode polarization loss during the electrochemical reaction of the fuel cell can be greatly reduced; and the electrolyte material has good output power in a low temperature section, so that the solid oxide fuel cell using the electrolyte material can operate efficiently and stably for a long period of time in the low temperature section (300 to 600 degrees Celsius).

Description

Technical field [0001] The invention relates to a low-temperature solid oxide fuel cell, which belongs to the technical field of new energy. Background technique [0002] Solid oxide fuel cells can efficiently convert chemical energy in fuels (such as hydrogen, methane, etc.) into electrical energy. The conversion efficiency is not limited by the Carnot cycle, and its efficiency is much higher than that of thermal power generating units. Fuel cells can be divided into proton exchange membrane fuel cells, solid oxide fuel cells, alkaline fuel cells, molten carbonate fuel cells, and phosphate fuel cells according to their electrolyte classification. Among them, solid oxide fuel does not require precious metal catalysts and materials. The advantages of wide selection range and high conversion efficiency have attracted wide attention. However, current solid oxide fuel cells mainly use yttria stabilized zirconia (YSZ) as the electrolyte, and YSZ needs to be at a high temperature (ab...

Claims

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Application Information

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IPC IPC(8): H01M8/1016H01M4/88H01M4/90
CPCY02E60/50
Inventor 陆玉正颜森林
Owner NANJING XIAOZHUANG UNIV
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