Magnesium-based hydrogen storage alloy composite material with metal sulfide added

A magnesium-based hydrogen storage alloy and metal sulfide technology, which is applied in the field of magnesium-based hydrogen storage alloy composite materials, can solve the problems that the hydrogen desorption rate has not been significantly improved, the hydrogen desorption kinetics has not been significantly improved, and the kinetic performance is not ideal. , to achieve the effects of easy industrialization and promotion, easy operation and low cost
CN102586660AInactive Publication Date: 2012-07-18YANSHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YANSHAN UNIV
Publication Date
2012-07-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a magnesium-based hydrogen storage alloy composite material with metal sulfide added, which consists of a magnesium-based hydrogen storage alloy and the metal sulfide of which the mass is 10-30 percent of that of the magnesium-based hydrogen storage alloy, wherein the magnesium-based hydrogen storage alloy is Mg and REMg3 or RE2Mg17 (RE=La, Ce, Pr and Nd), the metal sulfide can be one of MoS2, CoS2 and CoS. A preparation method of the magnesium-based hydrogen storage alloy composite material with the metal sulfide added mainly comprises the following steps of: (1) enabling the magnesium-based hydrogen storage alloy to fully adsorb hydrogen in a hydrogenation reactor, and (2) performing ball milling under protection of hydrogen atmosphere. The hydrogen adsorption / releasing rate of the composite material prepared by the method is improved by over 1.5 times than that of the magnesium-based hydrogen storage alloy without adding the metal sulfide, and the initial dehydrogenation temperature of the composite material is reduced by 15-100K. The composite material is simple in preparation process and stable in performance, and can be applied to hydrogen storage and supplying in fields such as electromobiles and fuel cells.
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Description

technical field

[0001] The invention relates to a magnesium-based hydrogen storage alloy composite material. Background technique

[0002] With the deterioration of the environment and the lack of energy, the development of environmentally friendly energy has become the focus of research in various countries. At present, hydrogen has become the most attractive new energy source due to its abundant resources, high energy density and environmental friendliness. Therefore, the use of hydrogen storage materials to store and transport hydrogen can be safe and efficient, and is considered to be one of the more ideal carriers. Practical hydrogen storage materials must meet the requirements of high hydrogen storage density, fast hydrogen absorption / desorption rate, moderate operating temperature and safety. Existing magnesium-based alloys as hydrogen storage and transport materials have been rapidly developed and extensively studied due to their advantages such as low density, lar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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