Preparation method of polyimide composite material and application of polyimide composite material in battery

A polyimide and composite material technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as poor electrical conductivity and poor battery electrochemical performance, and achieve the effect of high cost
CN110534711AActive Publication Date: 2019-12-03NINGBO FENGCHENG ADVANCED ENERGY MATERIALS RES INST CO LTD
12 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NINGBO FENGCHENG ADVANCED ENERGY MATERIALS RES INST CO LTD
Publication Date
2019-12-03

Smart Images

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

Abstract

The invention discloses a preparation method of a polyimide composite material. The preparation method comprises the following steps of: a) obtaining dispersion liquid containing superconducting carbon black, a dispersing agent and a polyimide monomer; b) reacting the dispersion liquid in an inert atmosphere at a temperature of 140-150 DEG C for 4-8 hours, performing separating, washing and dryingto obtain dry powder; and c) sintering the dry powder for 8-12 hours at a temperature of 300-350 DEG C in an inert atmosphere to obtain the polyimide composite material, wherein the non-active atmosphere is selected from at least one of nitrogen, helium and argon. The invention also provides application of the polyimide composite material in a battery. The carbon-based material used in the methodis common conductive carbon, has the cost advantage compared with graphene, carbon nanotubes and other conductive substances, and can easily make the polyimide material be compounded in situ to formthe composite material with a high specific surface area.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The application relates to a preparation method of a polyimide composite material, which belongs to the field of material preparation. Background technique

[0002] Traditional lithium-ion batteries use organic electrolytes. Organic electrolytes are easy to burn and the reaction between electrode materials and electrolytes causes thermal runaway, which poses major safety issues. In addition, in the manufacturing process, the harsh conditions of anhydrous and oxygen-free, the cost of lithium-ion batteries is relatively high. Aqueous lithium-ion batteries are water-based battery systems, and aqueous electrolytes usually use inorganic lithium salts, such as Li 2 SO 4 、LiNO 3 etc. The price of this raw material is generally low, and the source channels are extensive. Aqueous lithium-ion batteries solve several important problems faced by traditional lithium-ion batteries: 1. It fundamentally solves the phenomenon that the organic electrolyte is easy to...

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