Transition metal chalcogen-group carbon-based heterostructure composite material with regular morphology and preparation method and application of transition metal chalcogen-group carbon-based heterostructure composite material

A transition metal, heterostructure technology, applied in the preparation/purification of carbon, structural parts, chemical instruments and methods, etc., can solve the irregular morphology of transition metal chalcogenide compounds, unstable interface structure, carbon-based composite Non-uniformity and other problems, to achieve the effect of accelerating the progress of the electrochemical reaction, improving the rate performance, and increasing the active sites of the reaction
CN110683522AActive Publication Date: 2020-01-14CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2020-01-14

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Abstract

The invention discloses a transition metal chalcogen-group carbon-based heterostructure composite material with a regular morphology and a preparation method and application of the transition metal chalcogen-group carbon-based heterostructure composite material. The preparation method comprises the following step: calcining starting materials including transition metal acetylacetonates and chalcogenides under a protective atmosphere to obtain the transition metal chalcogen-group carbon-based heterostructure composite material with the regular morphology, uniform multi-stage carbon coating andstable structure. When applied to preparation of an energy storage device, the transition metal chalcogen-group carbon-based heterostructure composite material with the regular morphology has excellent electrochemical performance. Particularly, compared with an existing material, the transition metal chalcogen-group carbon-based heterostructure composite material with the regular morphology has obvious advantages on the multiplying power and cycle stability of an energy storage device.
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Description

technical field

[0001] The present invention relates to a high-efficiency energy storage material, in particular to a transition metal chalcogenide carbon-based heterostructure composite material with regular morphology, and also relates to the preparation of high-efficiency energy storage materials by one-step high-temperature calcination of transition metal acetylacetonate and chalcogen The method for new energy storage materials also relates to the application of composite materials in energy storage devices, and belongs to the technical field of new materials for energy storage devices. Background technique

[0002] Transition metal chalcogenides, referred to as TMDCs, commonly used MX z Indicates (M=Fe, Co, Ni, etc., X=S, Se, Te, Z=1-2). Due to its high energy density, narrow energy band gap, and abundant sources, it has become a hot material in the fields of photocatalysis and solar cells. Recently, TMDCs are considered to be one of the most promising electrode mater...

Claims

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