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Hydrogen storage fuel and preparation method thereof

A fuel and hydrogen storage technology, applied in the field of electrochemistry, can solve the problems of hydrogen storage fuel reaction kinetics, slow and high temperature sintering, etc. at the same time, and achieve the effects of improving the chemical reaction rate, alleviating easy sintering, and improving the charge and discharge capacity.

Pending Publication Date: 2021-12-07
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the above literatures can solve the problem of slow reaction kinetics and high temperature sintering of hydrogen storage fuels at the same time.

Method used

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  • Hydrogen storage fuel and preparation method thereof
  • Hydrogen storage fuel and preparation method thereof
  • Hydrogen storage fuel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 50.0g of Fe with a particle size of 5 μm 3 o 4 with 5.0g of Al with a particle size of 200nm 2 o 3 According to the mass ratio of 100:10 rough mix and put into the ball mill tank. 3.2 g of palladium acetate and 7.5 g of glucose were dissolved in 10 mL of water, then added to a ball mill jar, and ball milled at a speed of 400 rpm for 4 hours. The samples were taken out from the ball mill jar, after drying in an oven at 80 °C, at 700 °C with 5 wt% H 2 / Ar atmosphere calcined for 6h to obtain the hydrogen storage fuel, the transmission electron microscope results are as follows figure 1 , 2 shown.

Embodiment 2

[0034] The difference between embodiment 2 and embodiment 1 is that the oxide coating layer used is different. Adopt particle diameter in embodiment 2 and be the ZrO of 200nm 2 As a cladding layer, other processes are consistent with Example 1. 50.0g of Fe with a particle size of 5 μm 3 o 4 With 5.0g of ZrO with a particle size of 200nm 2 According to the mass ratio of 100:10 rough mix and put into the ball mill tank. 3.2 g of palladium acetate and 7.5 g of glucose were dissolved in 10 mL of water, and this solution was also added to the ball mill jar. Ball mill at 400rpm for 4h. The samples were taken out from the ball mill jar, after drying in an oven at 80 °C, at 700 °C with 5 wt% H 2 / Ar atmosphere and calcined for 6h to obtain hydrogen storage fuel.

Embodiment 3

[0036] The difference between embodiment 3 and embodiment 1 is that Al 2 o 3 The particle diameter is 500nm, and other processes are consistent with embodiment 1. In Example 3, the distance between hydrogen storage fuel particles is increased by increasing the particle size of the oxide, so as to provide more sufficient channels for gas phase transmission. The specific process is: 50.0g of Fe with a particle size of 5 μm 3 o 4 with 5.0g of Al with a particle size of 200nm 2 o 3 According to the mass ratio of 100:10 rough mix and put into the ball mill tank. 3.2 g of palladium acetate and 7.5 g of glucose were dissolved in 10 mL of water, and this solution was also added to the ball mill jar. Ball mill at 400rpm for 4h. The samples were taken out from the ball mill jar, after drying in an oven at 80 °C, at 700 °C with 5 wt% H 2 / Ar atmosphere and calcined for 6h to obtain hydrogen storage fuel.

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Abstract

The invention provides a hydrogen storage fuel and a preparation method thereof, and relates to a secondary solid oxide fuel cell (SOFC). The hydrogen storage fuel is characterized by comprising a metal fuel, a first coating layer composed of an oxide and a catalyst, and a second coating layer composed of carbon. Based on a multi-layer coating strategy, the high-temperature stability of the hydrogen storage fuel is effectively maintained and the reaction kinetics of the hydrogen storage fuel is improved through the catalytic action of a catalyst and the regulation and control of a gas channel in the hydrogen storage fuel, so that the power and the cycling stability of a battery are improved.

Description

technical field [0001] The invention relates to a high-temperature fuel cell and belongs to the field of electrochemistry. Background technique [0002] A high-temperature solid oxide fuel cell (SOFC) is a power generation device based on high-temperature electrochemical reactions, which can only generate electricity but cannot store electrical energy. Patent CN102652379B proposes a SOFC capable of reversible charging and discharging, that is, a secondary SOFC. On the basis of SOFC, it sets a closed hydrogen storage component on the anode side, and uses the reaction of hydrogen storage fuel and water vapor in the hydrogen storage component to reversibly store and release hydrogen, thereby realizing the secondaryization of SOFC. A variety of metals or their alloys and carbon can be used for hydrogen storage fuel, and a typical hydrogen storage fuel is iron. During the discharge process, the iron reacts with water vapor to produce hydrogen and ferroferric oxide, and the hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04082H01M8/04089C01B3/00
CPCH01M8/04216H01M8/04089C01B3/0078Y02E60/32Y02E60/50
Inventor 赵金保曾静张彥杰
Owner XIAMEN UNIV
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