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Solid oxide fuel battery system and preparation method thereof

A fuel cell system, solid oxide technology, applied in solid electrolyte fuel cells, fuel cells, circuits, etc., can solve the problems of low power density and low battery electromotive force, and achieve the effect of wide range of fuels and good application prospects

Active Publication Date: 2011-11-16
福赛尔科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, so far, for SOFC-H + For example, although the proton conductance is higher than the oxygen ion conductance at 600°C, the open circuit voltage of the battery is higher, but its power density at 600°C is generally low, while SOFC-O 2- Under optimized conditions, the highest power density has been greater than 1W cm at 600°C -2 reports, so only from the power density of SOFC-O 2 - is close to practical value, however, especially for medium and low temperature SOFC-O 2- For example, the electromotive force of the battery is low due to the partial electronic conductivity of the electrolyte

Method used

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  • Solid oxide fuel battery system and preparation method thereof
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  • Solid oxide fuel battery system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Preparation and performance test of Ni-BZCY|SDC|BSCF single cell

[0032] First, weigh 30g of NiO, 20g of BZCY powder and 3g of polyvinyl butyral, add 100ml of ethanol to mix by ball mill, take it out after 24h, keep it constant at 80°C, and keep stirring to dry the formed mixture slurry, then pass Grinding and sieving by hand to finally form an anode powder, weigh 0.35 g of the powder, and pass through a mold to prepare an anode green body.

[0033] Then, 0.02 g of electrolyte powder SDC was weighed again, evenly distributed on the anode green body just prepared, and pressed again. The anode-supported electrolyte double-layer body prepared above was calcined at 1450° C. for 5 hours, and the heating rate was 5° C. / min.

[0034] Next, weigh 2 g of BSCF, pipette 20 ml of isopropanol, 5 ml of ethylene glycol, and 1.5 ml of glycerol, add them together into a high-energy ball mill jar, and ball mill at 400 rpm for 30 minutes to prepare cathode slurry. Utilize th...

Embodiment 2

[0036] Example 2: Preparation and performance test of Ni-BZCY|YDC|BSCF single cell

[0037] First, weigh 70g of NiO, 30g of BZCY powder, 4g of starch and 3g of polyvinylpyrrolidone, add 300ml of acetone, add them together into a stainless steel ball mill jar, mix them for 24 hours, take them out, stir and dry the formed mixture slurry at a constant 60°C, and then pass Grind and sieve by hand to finally form anode powder, weigh 0.4g of the powder, and make an anode body through a mold, and send the body to a high-temperature furnace for heat treatment at 1000°C for 2 hours, with a heating rate of 5°C / min .

[0038] Then, weigh 10 g of electrolyte powder YDC, pipette 80 ml of isopropanol, 10 ml of ethylene glycol and 10 ml of toluene into a high-energy ball mill jar, and ball mill at 500 rpm for 2 hours to prepare electrolyte slurry. The slurry is sprayed on the above-mentioned anode blank by using an ultrasonic sprayer. During the spraying process, the constant temperature of ...

Embodiment 3

[0041] Example 3: Preparation and performance test of Ni-BCY|YSZ|LSM+YSZ single cell

[0042] First, weigh 55g of NiO, 45g of BCY powder, 8g of graphite and 2g of polyvinyl butyral, add 500ml of ethanol and xylene as solvents, add them together into a stainless steel ball mill jar, mix them for 24 hours, take them out, and pass the slurry through a small degassing Machine degassing for 40 minutes to obtain casting slurry, and the anode green body was prepared through a tape casting machine, and the green body was sent to a high-temperature furnace for heat treatment at 900°C for 5 hours, and the heating rate was 2°C / min.

[0043] Then, weigh 2 g of electrolyte powder YSZ, pipette 20 ml of isopropanol, 5 ml of ethylene glycol and 2 ml of toluene into a high-energy ball mill jar, and ball mill at 400 rpm for 1 hour to prepare electrolyte slurry. Use a spray gun to spray the slurry on the above-mentioned anode blank. During the spraying process, the anode blank is kept at a const...

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Abstract

The invention relates to a solid oxide fuel battery system and a preparation method thereof. The electrolyte of the battery system adopts an oxygen ion conductor oxide; the anode is a metal-ceramic composite anode, wherein the ceramic material is a proton conductor oxide or a mixture of the proton conductor oxide and the oxygen ion conductor oxide; and the cathode material is at least one of noble metal and perovskite type oxides or a mixture of the electrolyte and at least one of the noble metal and perovskite type oxides. A battery with the structure has a wide operating temperature range which is between 300 and 1,000 DEG C, high power density and open circuit voltage and very good operational stability. The system and the method make a great contribution to the development of fuel batteries, particularly intermediate and low-temperature solid oxide fuel batteries.

Description

technical field [0001] The invention belongs to the field of new energy and fuel cell technology, and specifically relates to a novel solid oxide fuel cell system with high power density and open circuit voltage and its preparation, which uses a proton conductor as the anode ion conducting phase, an oxygen ion conductor as the electrolyte, and has high power density and open circuit voltage. method. Background technique [0002] A fuel cell is a power generation device that directly converts the chemical energy in fuel into electrical energy through an electrochemical reaction. Solid oxide fuel cell (SOFC) is a new type of fuel cell composed of all solid-state components, which uses oxides with pure ion conductivity as electrolytes, composite oxides as cathode materials, and metal-ceramic composite electrodes as anode materials. The efficiency of this type of cell is the highest among all cells, and its high temperature operation makes all but H 2 Besides, other fuels such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/10H01M8/1016
CPCY02E60/522Y02P70/50Y02E60/50
Inventor 邵宗平苏超
Owner 福赛尔科技集团有限公司
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