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Strontium stannate/lanthanum strontium cobalt iron composite material-based low-temperature solid oxide fuel cell

A technology of solid oxides and composite materials, applied in solid electrolyte fuel cells, fuel cells, battery electrodes, etc., can solve problems such as short circuits, achieve high ion conductivity, prevent electron transmission, and reduce electrode polarization losses Effect

Active Publication Date: 2019-05-21
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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  • Strontium stannate/lanthanum strontium cobalt iron composite material-based low-temperature solid oxide fuel cell
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  • Strontium stannate/lanthanum strontium cobalt iron composite material-based low-temperature solid oxide fuel cell

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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 content described in the embodiments is only for illustrating the present invention, and should not and will not limit the present invention described in the claims.

[0028] Such as figure 1 As shown, the nickel foam coated with NCAL on the surface constitutes a symmetrical electrode, the fuel cell cathode and anode of the present invention all adopt the nickel foam coated with NCAL on the surface, and the core electrolyte layer is a composite material of SSO and LSCF, so the structure of the fuel cell is: foam Nickel / / NCAL / / SSO / LSCF / / NCAL / / Nickel Foam; Among them, NCAL is Ni 0.8 co 0.15 al 0.05 LiO 2-a Materials (can be purchased or prepared by a disclosed method), SSO is commercially available or prepared by the method of the present invention, LSCF is commercially available; foamed nickel is a commercially purchased foamed ...

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Abstract

The invention discloses a strontium stannate / lanthanum strontium cobalt iron composite material-based low-temperature solid oxide fuel cell. A negative electrode and a positive electrode of the fuel cell are foamed nickel of which a surface is coated with NCAL, and an electrolyte layer of the fuel cell is an SSO / LSCF composite material. The structure of the fuel cell is foamed nickel / / NCAL / / SSO / LSCF / / NCAL / / foamed nickel. In the low-temperature solid oxide fuel cell, a perovskite-structure strontium stannate and lanthanum strontium cobalt iron composite material is used as the electrolyte layerof the low-temperature solid oxide fuel cell, and the electrode polarization loss during the electrochemical reaction process of the fuel cell is greatly reduced; and the electrolyte material has favorable output power at a low-temperature segment, so that the solid oxide fuel cell employing the electrolyte material can efficiently and stably run for a long term at the low-temperature segment (300-600 DEG C).

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, belonging to the technical field of new energy. Background technique [0002] Solid oxide fuel cells can efficiently convert chemical energy in fuel (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 noble metal catalysts, materials The advantages of wide selection range and high conversion efficiency have attracted widespread attention. However, the current solid oxide fuel cells mainly use yttria-stabili...

Claims

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Application Information

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Patent Type & Authority Applications(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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