High-hydrogen-storage-capacity lithium borohydride/graphene (LiBH4/RGO) composite hydrogen storage material and preparation method thereof

A hydrogen storage material and technology for hydrogen storage, applied in the production of hydrogen and other directions, can solve the problem of high hydrogen desorption temperature and achieve the effect of wide application
CN102718183AInactive Publication Date: 2012-10-10CHANGZHOU UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGZHOU UNIV
Publication Date
2012-10-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the field of the modification of hydrogen storage materials and provides a high-hydrogen-storage-capacity lithium borohydride / graphene (LiBH4 / RGO) composite hydrogen storage material and a preparation method thereof. According to the preparation method, the LiBH4 is uniformly dispersed into pore channels of the RGO which is prepared through a chemical redox method by adopting a melt infiltration method or a high-speed ball milling method under the protective atmosphere of inert gas. In the composite material, the RGO which is prepared through the chemical redox method has the pore diameter of 2-10 nm, the pore volume of 0.08-1.9 cm<3> / g and the specific surface area of 800-2540 m<2> / g, and the mass percent of the LiBH4 is 10-80 wt%. According to the LiBH4 / RGO composite hydrogen storage material provided by the invention, the initial hydrogen generation temperature is lower than 100 DEG C, the hydrogen generation volume at the temperature below 500 DEG C is 5-18 wt%, and the LiBH4 / RGO composite hydrogen storage material can be applied to the fields of hydrogen supply sources of fuel cells, hydrogen energy source vehicles and the like.
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Description

technical field

[0001] The invention relates to the field of modification of hydrogen storage materials, and provides a LiBH with high capacity and low temperature dehydrogenation 4 / RGO composite hydrogen storage material with high hydrogen storage capacity and its preparation method. Background technique

[0002] The rapid development of the economy has led to an increasing demand for energy in the world, but the fossil energy that is currently the main energy source is depleting day by day, and the extensive use of fossil energy has caused serious environmental pollution and climate anomalies, so the development of new clean energy is a concern of all countries in the world major issues. Hydrogen energy has become a new type of clean energy with great development potential in the 21st century due to the advantages of high thermal efficiency in the combustion process, no exhaust gas emissions, and the product is water. It is used in many fields (especially electric vehicl...

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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