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Electrode material of reversible solid oxide battery and composite material, preparation method and application thereof

A solid oxide and electrode material technology, applied in battery electrodes, fuel cells, circuits, etc., can solve the problems of short life and high battery cost, and achieve the effect of improving electrical conductivity, good catalytic activity, and simple components

Pending Publication Date: 2022-04-26
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems existing in the prior art, the present invention provides an electrode material for a reversible solid oxide battery and its composite material, preparation method and application, which solves the problems of high cost and short life of the existing battery

Method used

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  • Electrode material of reversible solid oxide battery and composite material, preparation method and application thereof
  • Electrode material of reversible solid oxide battery and composite material, preparation method and application thereof
  • Electrode material of reversible solid oxide battery and composite material, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A new type of reversible solid oxide battery electrode material, the specific molecular formula is Sr 1.9 Bi 0.1 Fe 1.5 Mo 0.5 o 6-δ .

[0029] The preparation method of the reversible solid oxide battery electrode material comprises: taking 5.6098g of strontium carbonate, 0.4659g of bismuth trioxide, 2.3953g of ferric oxide, and 1.4396g of molybdenum trioxide, adding an appropriate amount of ethanol for stirring treatment to obtain a solid-liquid mixture; The solid-liquid mixture was placed in a ball mill, and ball milled at a speed of 350 rpm for 24 hours, and the ball-milled powder was dried in a drying oven at 80°C. Finally, it was calcined at 1200 °C for 12 h in air atmosphere to obtain Sr with perovskite phase structure. 1.9 Bi 0.1 Fe 1.5 Mo 0.5 o 6-δ electrode material. The prepared electrode material was heated in 5% H 2 / After reduction at 850 °C for 5 h in Ar atmosphere, Sr with perovskite support structure was obtained 3 FeMoO 6.5 -BiFe@Sr 1.9 ...

Embodiment 2

[0031] A new type of reversible solid oxide battery electrode material, the specific molecular formula is Sr 1.92 Bi 0.08 Fe 1.5 Mo 0.5 o 6-δ .

[0032] The preparation method of the reversible solid oxide battery electrode material comprises: taking 5.6689g of strontium carbonate, 0.3728g of bismuth trioxide, 2.3953g of ferric oxide, and 1.4396g of molybdenum trioxide, adding an appropriate amount of ethanol for stirring treatment to obtain a solid-liquid mixture; The solid-liquid mixture was placed in a ball mill, ball milled at a speed of 450 rpm for 20 hours, and the ball-milled powder was dried in a drying oven at 80°C. Finally, it was calcined at 1150 °C for 14 h in the air atmosphere to obtain Sr with perovskite phase structure. 1.92 Bi 0.08 Fe 1.5 Mo 0.5 o 6-δ electrode material. The prepared electrode material was heated in 5% H 2 After reduction at 900 °C for 4 h in Ar atmosphere, Sr with perovskite support structure was obtained 3 FeMoO 6.5-BiFe@Sr 1.9...

Embodiment 3

[0034] A new type of reversible solid oxide battery electrode material, the specific molecular formula is Sr 1.95 Bi 0.05 Fe 1.5 Mo 0.5 o 6-δ .

[0035] The preparation method of the reversible solid oxide battery electrode material comprises: taking 5.7575g of strontium carbonate, 0.2329g of bismuth trioxide, 2.3953g of ferric oxide, 1.4396g of molybdenum trioxide, adding an appropriate amount of ethanol for stirring treatment, and obtaining a solid-liquid mixture; The solid-liquid mixture was placed in a ball mill and ball-milled at a speed of 500 rpm for 12 hours, and the ball-milled powder was dried in a drying oven at 80°C. Finally, it was calcined at 1100 °C for 15 h in air atmosphere to obtain Sr with perovskite phase structure. 1.95 Bi 0.05 Fe 1.5 Mo 0.5 o 6-δ electrode material. The prepared electrode material was heated in 5% H 2 After reduction at 800 °C for 6 h in Ar atmosphere, Sr with a perovskite support structure was obtained. 3 FeMoO 6.5 -BiFe@Sr ...

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Abstract

The invention discloses an electrode material of a reversible solid oxide battery and a composite material, a preparation method and application thereof, relates to the field of electrode materials, and solves the problems of high cost and short service life of an existing battery. The electrode material is an oxide with a perovskite structure, the structural formula is Sr (2-x) BixFe (1.5) Mo (0.5) O (6-delta), delta is more than 0 and less than 0.2, and x is more than 0 and less than or equal to 0.1. The SBFM material with the perovskite structure prepared by the invention has the characteristics of relatively simple and uniform components, relatively simple synthesis process and the like. High-temperature reduction is carried out in a hydrogen atmosphere, a large number of uniformly-distributed nano-particles are separated out, and meanwhile, more oxygen vacancies are generated. The nano-particles can remarkably improve the conductivity of the SBFM electrode material and provide a large number of active sites, and the SBFM serves as an anode and has a rapid catalysis effect on reaction gas. In a hydrocarbon fuel atmosphere, the nano-particles separated out from the perovskite anode have good catalytic activity and show good electrochemical performance. Meanwhile, the SBFM material disclosed by the invention is used for preparing a porous anode and can stably work in a hydrocarbon fuel atmosphere.

Description

technical field [0001] The invention relates to the field of electrode materials, in particular to an electrode material for a reversible solid oxide battery and its composite material, preparation method and application. Background technique [0002] The excessive use of fossil fuels, such as oil and coal, has caused many problems, such as air pollution, greenhouse effect and animal extinction. Reversible symmetric solid oxide cell (RSOC), as an energy conversion device, can achieve efficient, clean and pollution-free reversible conversion of chemical energy and electrical energy. It can operate in the solid oxide fuel cells (solid oxide fuel cells, SOFCs) mode, and convert the chemical energy in the fuel into electrical energy in an electrochemical reaction. Compared with the traditional power generation technology limited by the Carnot cycle, the fuel The battery reduces the energy loss in the intermediate process, and at the same time has the advantages of high conversi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88H01M8/1246
CPCH01M4/8605H01M4/8647H01M4/8828H01M4/8882H01M8/1246H01M2008/1293Y02E60/50
Inventor 金芳军孙宁沈羽王芳李金华徐铭泽
Owner CHANGCHUN UNIV OF SCI & TECH
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