A cathode-supported direct carbon fuel cell

A cathode support and fuel cell technology, which is applied to fuel cell parts, molten electrolyte fuel cells, electrolyte holding devices, etc., can solve the problems of limited fuel diversity, difficult operation, and low fuel supply, and achieve the goal of adding Easy to operate, realize the effect of diversification and high energy efficiency

Active Publication Date: 2011-12-21
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The design of the invention uses the fuel electrode as the support layer, which increases the difficulty in the preparation of the fuel catalytic layer, and the diversity of the fuel electrode is limited; in additio

Method used

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  • A cathode-supported direct carbon fuel cell
  • A cathode-supported direct carbon fuel cell
  • A cathode-supported direct carbon fuel cell

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The cathode-supported direct carbon fuel cell was prepared by dipping molding method, in which: the material of the anode layer was NiO-YSZ composite material, the material of the electrolyte layer was YSZ, the material of the cathode active layer was the composite material of LSM-YSZ, and the material of the cathode support layer was The material is LSM; the preparation process includes:

[0032] (1) Add organic solvent, dispersant, pore-forming agent, binder, plasticizer to ball milling and mixing in each functional layer material powder to obtain the slurry of each functional layer, and vacuumize the slurry;

[0033] (2) Immerse the mold tube in the cathode slurry, repeat the impregnation and drying process until the required thickness, and pre-fire the obtained cathode support and active layer green body at a certain temperature after demoulding, and then impregnate the electrolyte slurry to form a cathode / electrolyte composite After co-sintering, impregnate the ano...

Embodiment 2

[0052] The difference between this embodiment and embodiment 1 is that the material of the anode layer is a composite material of NiO-SSZ, the material of the electrolyte layer is SSZ, the material of the cathode active layer is a composite material of LSM-SSZ, and the material of the cathode support layer for LSM.

[0053] All the other contents are described in Example 1.

[0054] image 3 The discharge performance curve of the cathode-supported direct carbon fuel cell prepared for this example is shown by image 3 It can be seen that directly using solid carbon as fuel, the open circuit voltage is between 0.88-0.91, and at 900°C and 850°C, the power density is 172.66 and 92.06mW / cm respectively 2 . Compared with Example 1, the electrochemical performance has been significantly improved. This is due to the higher electrical conductivity and catalytic activity of SSZ compared to YSZ.

[0055] Figure 4 The cross-sectional SEM photo of the cathode-supported direct carbon...

Embodiment 3

[0057] The difference between this embodiment and embodiment 2 is that the material of the anode layer is NiO-GDC composite material with better catalytic performance, and the rest of the content is the same as that of embodiment 1.

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Abstract

The invention discloses a cathode-supported direct carbon fuel cell, which comprises a fuel bin, an anode side collector layer, an anode layer, an electrolyte layer, a cathode active layer, a cathode-supporting layer, a cathode side collector layer, a carbon fuel layer, a porous ceramic layer, a carbon fuel input tube, a carrier gas intake tube, a carrier gas output tube and an oxygen or air intake tube, a cell is arranged in the fuel bin, the anode side collector layer, the anode layer, the electrolyte layer, the cathode active layer, the cathode-supporting layer and the cathode side collector layer are arranged sequentially from the outside to the inside, and moreover, the anode side collector layer, the carbon fuel layer and the porous ceramic layer are superposed in the fuel bin sequentially from the top down. Since the cell is a cathode-supported cell which directly utilizes solid carbon as fuel and the outside of the cell is provided with the fuel input tube, the cell has the advantages of simple structure, high energy efficiency, environment-friendliness, no leakage, corrosion and explosion dangers and the like, can realize the continuous feeding of fuel and the diversity of the fuel electrode, and is convenient and easy to operate.

Description

technical field [0001] The invention relates to a direct carbon fuel cell, in particular to a cathode-supported direct carbon fuel cell, which belongs to the technical field of fuel cells. Background technique [0002] In recent years, with the development of the economy, the shortage of energy in our country has become increasingly serious. At present, 68% of my country's total power generation is generated through coal, which has caused serious environmental problems. Therefore, how to use coal resources greenly and efficiently has become a top priority. Direct carbon fuel cell (DCFC) is a device that uses solid carbon as fuel to directly convert chemical energy into electrical energy, with a theoretical efficiency of up to 100%. 2 , greatly reducing the enrichment cost of dealing with the greenhouse effect gas. Therefore, direct carbon fuel cells have received increasing attention. [0003] Thomas A.Edison made the first attempt of DCFC in 1891, using molten oxides, s...

Claims

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Application Information

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IPC IPC(8): H01M8/14H01M8/02H01M8/0289
CPCY02E60/526Y02E60/50
Inventor 王绍荣周娟叶晓峰
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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