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A low temperature solid oxide fuel cell based on strontium stannate/lanthanum strontium cobalt iron composite

A solid oxide, composite material technology, applied in solid electrolyte fuel cells, fuel cells, battery electrodes, etc., can solve problems such as short circuits, achieve high ionic conductivity, reduce electrode polarization loss, and good output power.

Active Publication Date: 2021-10-08
NANJING XIAOZHUANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A low temperature solid oxide fuel cell based on strontium stannate/lanthanum strontium cobalt iron composite
  • A low temperature solid oxide fuel cell based on strontium stannate/lanthanum strontium cobalt iron composite
  • A low temperature solid oxide fuel cell based on strontium stannate/lanthanum strontium cobalt iron composite

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Embodiment Construction

[0027] The present invention can be better understood from the following examples. However, those skilled in the art can easily understand that the contents described in the embodiments are only used to illustrate the present invention, and should not and will not limit the present invention described in detail in the claims.

[0028] like figure 1 As shown in the figure, the nickel foam coated with NCAL on the surface constitutes a symmetrical electrode. The cathode and anode of the fuel cell of the present invention both use foam nickel coated with NCAL on the surface, and the core electrolyte layer is a composite material of SSO and LSCF. Therefore, the structure of the fuel cell is: foam Nickel / / NCAL / / SSO / LSCF / / NCAL / / Nickel foam; NCAL is Ni 0.8 Co 0.15 Al 0.05 LiO 2-a Materials (can be purchased or prepared by a published method), SSO is commercially available or prepared by the method of the present invention, LSCF is commercially available; nickel foam is a commercia...

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Abstract

The invention discloses a low-temperature solid oxide fuel cell based on strontium stannate / lanthanum strontium cobalt iron composite material. The cathode and anode of the fuel cell are nickel foam coated with NCAL on the surface, and the electrolyte layer of the fuel cell is SSO / LSCF composites. That is, the structure of the fuel cell of the present invention is: nickel foam / / NCAL / / SSO / LSCF / / NCAL / / nickel foam. The low-temperature solid oxide fuel cell of the invention adopts the composite material of strontium stannate and lanthanum strontium cobalt iron with perovskite structure as its electrolyte layer, which greatly reduces the electrode polarization loss during the electrochemical reaction of the fuel cell; the electrolyte material It has good output power in the low temperature section, so that the solid oxide fuel cell using the electrolyte material can operate efficiently and stably for a long time in the low temperature section (300-600 degrees).

Description

technical field [0001] The invention relates to a low-temperature solid oxide fuel cell based on a strontium stannate / lanthanum strontium cobalt iron composite material, and 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 generation 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 widespread attention. However, the current solid oxide fuel cells mainly use yttr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1016H01M8/10H01M4/90H01M4/88
CPCY02E60/50
Inventor 陆玉正颜森林
Owner NANJING XIAOZHUANG UNIV
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