Lamellar zinc-cobalt sulfide composite material based on MOFs, and preparation method and application thereof

A composite material and sulfide technology, applied in the direction of active material electrodes, electrochemical generators, electrical components, etc., can solve the problems of large material volume changes, poor structural stability, and reduced cycle performance, and increase the contact area , enhanced conductivity, high specific capacity effect
CN110350157AActive Publication Date: 2019-10-18SOUTHEAST UNIV
4 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2019-10-18

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a lamellar zinc-cobalt sulfide composite material based on MOFs, and a preparation method and an application thereof. The preparation method comprises the following steps: 1) synthesizing a white Zn MOFs nanosheet as a precursor; 2) adding white powder into an ethanol solution containing cobalt nitrate hexahydrate to obtain pinkish purple CO / Zn MOFs powder; and 3) performing two-step calcination and vulcanization on the pinkish purple powder in an inert atmosphere to obtain the ZnCoS@CNS composite material, namely, the lamellar zinc-cobalt sulfide composite material based on the MOFs. The ZnCoS@CNS composite material prepared by the method has a lamellar structure, so that the contact area of an electrolyte solution and the material can be enlarged, the transmissionof lithium ions is promoted, and meanwhile, a space is provided for the change of the volume of the material in a lithium intercalation / deintercalation process. When the material is used as a negative electrode material of a lithium ion battery, the material shows relatively good lithium storage performance.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field:

[0001] The invention relates to a lamellar zinc-cobalt sulfide composite material based on MOFs and its preparation and application, belonging to the technical field of zinc-cobalt sulfide composite materials. Background technique

[0002] In recent years, due to the sharp reduction of non-renewable fossil energy and the serious environmental pollution caused by burning fossil fuels, people are forced to develop renewable clean energy. Renewable energy sources such as wind and solar energy are environmentally friendly and economical to power future societies, but these intermittent renewable energy sources require efficient energy storage and conversion systems. Lithium-ion batteries have been widely used as power storage and conversion systems in portable electronic devices, electric vehicles, aerospace, etc. due to their advantages of high energy density, long cycle life and no memory effect. Currently used as negative electrode materials for lithium-ion ...

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
Login to View More