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Medium-temperature solid oxide fuel cell taking carbon and water as fuels

A solid oxide and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of insufficient utilization of carbon materials and unfavorable utilization of carbon materials, so as to achieve good safety and high efficiency, and increase productivity , the effect of improving the utilization rate

Active Publication Date: 2021-06-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although solid oxide fuel cells that directly use carbon as fuel have high output power and specific energy density, there is a problem that carbon materials cannot be fully utilized, because solid oxide fuel cells that directly use carbon as fuel need to operate at high temperatures , and the electrochemical oxidation equilibrium product gas of high-temperature carbon is CO, which is not conducive to the full utilization of carbon materials

Method used

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  • Medium-temperature solid oxide fuel cell taking carbon and water as fuels
  • Medium-temperature solid oxide fuel cell taking carbon and water as fuels
  • Medium-temperature solid oxide fuel cell taking carbon and water as fuels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] According to the stoichiometric ratio, weigh 9.865g BaCO 3 , 0.616g ZrO 2 , 6.024g CeO 2 , 1.129g Y 2 o 3 Add it into a ball mill jar, then add 36mL of absolute ethanol, mill at a speed of 500r / min for 6h, and place it under a sodium lamp for 24h. Then at 1150°C, after 10h of heat preservation, the perovskite BaZr 0.1 Ce 0.7 Y 0.2 o 3-δ powder.

[0066] Preparation of porous anode substrate: weigh 5.76g of NiO, 3g of BaZr 0.1 Ce 0.7 Y 0.2 o 3-δ With 1.75g ​​of soluble starch, 36mL of absolute ethanol, the rotation speed is 500r / min, ball milling for 6h, under a sodium lamp for 24h, to obtain anode powder mixed evenly, and then kept at 200MPa for 2min to obtain a disc-shaped sample, and in 800 ℃ for 2 hours to form a porous anode substrate.

[0067] Preparation of the anode support electrolyte: impregnate the electrolyte layer on the anode support by the impregnation method: weigh 5.00g BaZr 0.1 Ce 0.7 Y 0.2 o 3-δ, 0.025g NiO, 0.36g ethanolamine (TEA), 0...

Embodiment 2

[0075] According to the stoichiometric ratio, weigh 9.865g BaCO 3 , 0.616g ZrO 2 , 6.024g CeO 2 , 1.129g Y 2 o 3 Add it into a ball mill jar, then add 36mL of absolute ethanol, mill at a speed of 500r / min for 6h, and place it under a sodium lamp for 24h. Then at 1150°C, after 10h of heat preservation, the perovskite BaZr 0.1 Ce 0.7 Y 0.2 o 3-δ powder.

[0076] Preparation of porous anode substrate: weigh 5.76g of NiO, 3g of BaZr 0.1 Ce 0.7 Y 0.2 o 3-δ With 1.75g ​​of soluble starch, 36mL of absolute ethanol, the rotation speed is 500r / min, ball milling for 6h, under a sodium lamp for 24h, to obtain anode powder mixed evenly, and then kept at 200MPa for 2min to obtain a disc-shaped sample, and in 800 ℃ for 2 hours to form a porous anode substrate.

[0077] Preparation of the anode support electrolyte: impregnate the electrolyte layer on the anode support by the impregnation method: weigh 5.00g BaZr 0.1 Ce 0.7 Y 0.2 o 3-δ , 0.025g NiO, 0.36g ethanolamine (TEA), ...

Embodiment 3

[0085] According to the stoichiometric ratio, weigh 9.865g BaCO 3 , 0.616g ZrO 2 , 6.024g CeO 2 , 1.129g Y 2 o 3 Add it into a ball mill jar, then add 36mL of absolute ethanol, mill at a speed of 500r / min for 6h, and place it under a sodium lamp for 24h. Then at 1150°C, after 10h of heat preservation, the perovskite BaZr 0.1 Ce 0.7 Y 0.2 o 3-δ powder.

[0086] Preparation of porous anode substrate: Weigh 5.76g of NiO, 3g of BaZr 0.1 Ce 0.7 Y 0.2 o 3-δ With 1.75g ​​of soluble starch, 36mL of absolute ethanol, the rotation speed is 500r / min, ball milling for 6h, under a sodium lamp for 24h, to obtain anode powder mixed evenly, and then kept at 200MPa for 2min to obtain a disc-shaped sample, and in 800 ℃ for 2 hours to form a porous anode substrate.

[0087] Preparation of anode support electrolyte: impregnate the electrolyte layer on the anode support by impregnation method: weigh 5.00gBaZr 0.1 Ce 0.7 Y 0.2 o 3-δ , 0.025g NiO, 0.36g ethanolamine (TEA), 0.30g dio...

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Abstract

The invention discloses a medium-temperature solid oxide fuel cell taking carbon and water as fuels. The medium-temperature solid oxide fuel cell comprises a porous cathode, a compact electrolyte, a porous anode, a reactor and a heat source, the reactor consists of a top end cavity and a reaction cavity which are communicated with each other; the porous anode is sealed on the top end cavity of the reactor through a sealing piece; solids are contained in the reaction cavity and at least comprise a catalyst and a carbon material; the catalyst is a transition metal oxide; one end of the water vapor inlet conduit is communicated with the bottom of the reaction cavity, and the other end of the water vapor inlet conduit is externally connected with a water source; and the tail gas outlet guide pipe extends into the reaction cavity from the outside to the top end cavity. The fuel provided by the invention is carbon and water, and is safe, cheap and wide in source. The invention has the characteristics of safety, environmental protection, high efficiency, low cost and the like, and is particularly suitable for small solid oxide fuel cells, such as a standby power supply and a portable power supply.

Description

technical field [0001] The invention relates to a fuel cell, in particular to a medium-temperature solid oxide fuel cell using carbon and water as fuel, and belongs to the technical field of batteries. Background technique [0002] In recent years, with the development of the economy and the improvement of environmental protection awareness, the commonly used renewable energy sources, including solar energy, wind energy and tidal energy, have developed rapidly, but their intermittent and regional characteristics limit their further development. Therefore, the development A renewable, clean and efficient energy source is particularly important. Solid oxide fuel cells have received great attention and research due to their many advantages. Traditional oxygen ion conductors need to operate at high temperatures (800-1000 ° C), therefore, a series of corresponding problems are brought about, such as sealing problems, The reaction between the electrode and the electrolyte and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1253H01M8/126H01M8/1233
CPCH01M8/1253H01M8/126H01M8/1233Y02E60/50
Inventor 刘江陈美龙周明扬朱子翼曹丹
Owner SOUTH CHINA UNIV OF TECH