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Solid-oxide fuel battery and pyroelectric material associated power generation system

A technology of solid oxides and thermoelectric materials, applied in solid electrolyte fuel cells, fuel cell heat exchange, fuel cells, etc., can solve the problems of complex structure, high cost, waste heat, low utilization rate of waste heat, etc., and achieve high heat utilization rate , simple structure and low cost

Inactive Publication Date: 2011-07-27
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Complex structure and high cost
For small or micro SOFC, its heat is not enough to link with the heat engine cycle system, and the utilization rate of waste heat and waste heat is low

Method used

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  • Solid-oxide fuel battery and pyroelectric material associated power generation system
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  • Solid-oxide fuel battery and pyroelectric material associated power generation system

Examples

Experimental program
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Effect test

Embodiment 1

[0070] In this embodiment, the composite power generation device is composed of one group (two pieces) of SOFC modules, and two sides of which are composite single-layer thermoelectric battery modules. The SOFC power generation module adopts the SOFC-E / SOFC-E structure, and the SOFC material is Ni-YSZ / YSZ / LSM in sequence, wherein the thickness of the electrolyte YSZ layer is 50-300 μm, preferably 100-150 μm; the thickness of the anode Ni-YSZ is 10-100 μm, It is preferably 20-50 μm, and the thickness of the cathode LSM is 10-100 μm, preferably 20-50 μm. The working temperature of SOFC is 800~850℃, and the fuel is methane gas. The inner cavity of SOFC module is 4cm wide and about 10cm long.

[0071] Thermoelectric battery module The thermoelectric battery is composed of P-type and N-type AgSbTe2-GeTe (TAGS) based thermoelectric materials in series, with a total of 500 pairs, supported by Al2O3 thermally conductive ceramic sheets on both sides.

[0072] After the composite power...

Embodiment 2

[0074] In this embodiment, the composite power generation device is composed of a group (two pieces) of SOFC power generation modules and a composite single-layer thermoelectric battery module on both sides. The SOFC hair module adopts the SOFC-E / SOFC-E structure, and the SOFC material is Ni-SSZ / SSZ / LSM in sequence, wherein the thickness of the electrolyte SSZ layer is 50-300 μm, preferably 100-150 μm; the thickness of the anode Ni-SSZ is 10-100 μm, It is preferably 20-50 μm, and the thickness of the cathode LSM is 10-100 μm, preferably 20-50 μm. The working temperature of SOFC is 750~800℃, and the fuel is methane gas. The inner cavity of SOFC module is 4cm wide and about 10cm long.

[0075] Thermoelectric battery module The thermoelectric battery is composed of P-type and N-type AgSbTe2-GeTe (TAGS) based thermoelectric materials in series, with a total of 500 pairs, supported by Al2O3 thermally conductive ceramic sheets on both sides.

[0076]After the composite power genera...

Embodiment 3

[0078] In this embodiment, the composite power generation device is composed of a group (two pieces) of SOFC power generation modules and a composite single-layer thermoelectric battery module on both sides. The SOFC hair module adopts the SOFC-C / SOFC-C structure, and the SOFC material is Ni-YSZ / YSZ / LSM in sequence, in which the thickness of the electrolyte YSZ layer is 10-50 μm, preferably 10-20 μm; the thickness of the anode Ni-YSZ is 10-100 μm, The thickness of the cathode LSM is preferably 20-50 μm, and the thickness of the cathode LSM is 200-1000 μm, preferably 300-500 μm. The working temperature of SOFC is 700~750℃, and the fuel is methane gas. The inner cavity of SOFC module is 4cm wide and about 10cm long.

[0079] Thermoelectric battery module The thermoelectric battery is composed of P-type and N-type AgSbTe2-GeTe (TAGS) based thermoelectric materials in series, with a total of 500 pairs, supported by Al2O3 thermally conductive ceramic sheets on both sides.

[0080]...

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Abstract

The present invention discloses a combined generation system by solid oxide fuel battery and thermoelectric material which comprising of solid oxide fuel battery SOFC module and thermal battery module comprised of two groups of thermal batteries. SOFC module and thermal battery module are set in interval, the hot end of thermal battery is connected with SOEC module, and the cold end is connected with circuit system by flow plate. The thermal battery module comprises of thermoelectric material such as Bi2Te3 based solid solution and AgSbTe2-GeTe solid solution.The thermoelectric material generates by residual heat of solid oxide fuel battery, the structure is simple, the cost is low and the heat utilization efficiency is high.

Description

technical field [0001] The invention relates to a technology for converting chemical energy into electric energy, in particular to a combined power generation system of a solid oxide fuel cell and a thermoelectric material. Background technique [0002] Solid Oxide Fuel Cell (SOFC) is the most efficient device that directly converts the chemical energy of hydrocarbons into electrical energy through electrochemical reactions. Pay attention to. [0003] The operating temperature of SOFC in the prior art is 600-1000°C. SOFC combined heat and power systems usually use a fuel cell-heat engine hybrid cycle to utilize SOFC waste heat, that is, use SOFC high-temperature waste heat to drive a steam turbine to generate electricity, and use SOFC high-temperature exhaust gas to drive a gas turbine to generate electricity. , this way of combined heat and power is suitable for large-scale power generation systems. [0004] At present, the main obstacle to the practical application of SO...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M16/00H01M8/00H01M8/06H01M8/02H01M8/10H01M4/86H01L35/00H01L37/00H01M8/04007
CPCY02E60/521Y02B90/12Y02B90/10Y02E60/50
Inventor 韩敏芳
Owner CHINA UNIV OF MINING & TECH (BEIJING)