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Ternary composite matrix anode material for molten carbonate fuel cell (MCFC) and preparation method of ternary composite matrix anode material

A molten carbonate and ternary composite technology, applied in battery electrodes, electrical components, circuits, etc., can solve problems such as hindering large-scale commercialization, affecting battery life, battery short circuit, etc., and achieve large-scale industrial production and preparation The effect of short cycle time and thin coating thickness

Inactive Publication Date: 2012-01-04
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the slow dissolution of the cathode and the resulting short circuit of the battery have been the main factors affecting the battery life and hindering its further large-scale commercialization.
At present, most multi-component composite materials are mixed and sintered with ceramic powder, etc., which need to be fully mixed during production to prevent uneven material components, and the composite cathode made has a certain degree of brittleness.

Method used

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  • Ternary composite matrix anode material for molten carbonate fuel cell (MCFC) and preparation method of ternary composite matrix anode material
  • Ternary composite matrix anode material for molten carbonate fuel cell (MCFC) and preparation method of ternary composite matrix anode material
  • Ternary composite matrix anode material for molten carbonate fuel cell (MCFC) and preparation method of ternary composite matrix anode material

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Embodiment 1

[0034] The ternary composite matrix cathode in this embodiment is obtained through the following steps:

[0035] LiCoO was prepared by using the gel combustion method and controlling the calcination temperature of 650 °C. 2 and CeO 2 Two kinds of nanoparticles. 0.2g LiCoO with a molar ratio of 4:1 2 / CeO 2 The nanoparticle mixture was dispersed in 50 ml of a mixture of isopropanol and ethylene glycol with a volume ratio of 3:1 to make a suspension, and the pH value of the suspension was adjusted to 2.5-3. In the prepared suspension, the porous nickel is used as the cathode, the platinum sheet is used as the anode, the electrode distance is 2.5 cm, the electrophoresis voltage is controlled at 65 volts, and the electrophoresis time is 2 minutes, and the nanoparticle group is modified onto the surface of the porous nickel. Sintered at 650 °C for 1 hour in an inert atmosphere to make porous (nano-LiCoO 2 -CeO 2 )-Ni ternary composite matrix cathode material.

[0036] The su...

Embodiment 2

[0042] The ternary composite matrix cathode in this embodiment is obtained through the following steps:

[0043] LiCoO was prepared by using the gel combustion method and controlling the calcination temperature of 650 °C. 2 and CeO 2 Two kinds of nanoparticles. 0.2g LiCoO with a molar ratio of 3:1 2 / CeO 2 The nanoparticle mixture was dispersed in 50 ml of a mixture of isopropanol and ethylene glycol with a volume ratio of 2:1 to make a suspension, and the pH value of the suspension was adjusted to 2.5-3. In the prepared suspension, the porous nickel is used as the cathode, the platinum sheet is used as the anode, the distance between the electrodes is 2.5 cm, the electrophoresis voltage is controlled at 55 volts, and the electrophoresis time is 2 minutes, and the nanoparticles are modified onto the surface of the porous nickel. Sintered at 650 °C for 1 hour in an inert atmosphere to make porous (nano-LiCoO 2 -CeO 2 )-Ni ternary composite matrix cathode material.

[004...

Embodiment 3

[0047] The ternary composite matrix cathode in this embodiment is obtained through the following steps:

[0048] LiCoO was prepared by using the gel combustion method and controlling the calcination temperature of 650 °C. 2 and CeO 2 Two kinds of nanoparticles. 0.2g LiCoO with a molar ratio of 6:1 2 / CeO 2 The nanoparticle mixture was dispersed in 50 ml of a mixture of isopropanol and ethylene glycol at a volume ratio of 5:1 to make a suspension, and the pH value of the suspension was adjusted to 2.5-3. In the prepared suspension, the porous nickel is used as the cathode, the platinum sheet is used as the anode, the distance between the electrodes is 2.5 cm, the electrophoresis voltage is controlled at 75 volts, and the electrophoresis time is 2 minutes, and the nanoparticle group is modified onto the surface of the porous nickel. Sintered at 650 °C for 1 hour in an inert atmosphere to make porous (nano-LiCoO 2 -CeO 2 )-Ni ternary composite matrix cathode material.

[0...

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Abstract

The invention discloses a ternary composite matrix anode material for a molten carbonate fuel cell (MCFC) and a preparation method of the ternary composite matrix anode material. The preparation method comprises the following steps of: depositing two nano ceramic particles with high properties on a porous nickel matrix simultaneously; and sintering under an inert atmosphere, and thus obtaining a composite matrix anode, wherein the nano ceramic particles mainly comprise LiCoO2 and one of LiFeO2 and CeO2, and the deposited polynary nano ceramic particle layer is uniformly distributed on the surface of the porous nickel matrix and has high bonding force together with the matrix. The ternary composite matrix anode material has high mechanical strength, high deformation resistance, high dissolving resistance, a simple preparation process and extremely short preparation time and can be used for MCFC stack actual industries.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and in particular relates to a ternary composite matrix cathode material for a molten carbonate fuel cell and a preparation method thereof. Background technique [0002] Molten carbonate fuel cell (MCFC) has become one of the most promising power generation devices for directly converting chemical energy into electrical energy due to its advantages of high efficiency, cleanliness, wide range of fuel sources, and no need for noble metals as catalysts. And has achieved commercial production. However, the slow dissolution of the cathode and the resulting battery short-circuit problem have been the main factors affecting the battery life and hindering its further large-scale commercialization. An ideal cathode material should have good toughness and mechanical strength, excellent resistance to deformation, dissolution and electrochemical properties. At present, no single-component mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88
CPCY02E60/50
Inventor 陈丽江洪小平贾彦荣施思齐刘海华董晓玲
Owner ZHEJIANG SCI-TECH UNIV
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