A kind of conductive ternary composite material and its preparation method and application
A ternary composite and composite material technology, which is applied in the direction of nanotechnology, electrical components, chemical instruments and methods for materials and surface science, can solve the problem of battery cycle stability, battery specific capacity, and electronic conduction. Poor capacity, large volume changes, etc., to achieve the effect of improving cycle stability, promoting rapid transmission, and alleviating volume deformation
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Embodiment 1
[0031] A preparation method of a conductive ternary composite material, specifically comprising the following steps:
[0032] (1) Prepare 25mg·mL -1 FeCl 3 Aqueous solution, add BC hydrogel with a thickness of 1.5mm and a length and width of 15mm into the prepared FeCl 3 In the aqueous solution, stand in a refrigerator at 4°C for 24 hours;
[0033] (2) will fully infiltrate FeCl 3 The BC hydrogel was taken out and directly put into 1000mL of deionized water with a water temperature of 60°C for in-situ hydrolysis reaction. During the hydrolysis process, fresh deionized water was replaced every 20 minutes until the deionized water was completely colorless and transparent. Without adding any other reagents, the iron-containing active substance precursor is deposited on the surface of BC nanofibers, and the hydrolyzed composite material is obtained after the reaction is completed;
[0034] (3) Freeze-dry the prepared hydrolyzed composite hydrogel to obtain the corresponding ai...
Embodiment 2
[0042] A preparation method of a conductive ternary composite material, specifically comprising the following steps:
[0043] (1) Prepare 35mg·mL -1 FeCl 3 Aqueous solution, add BC hydrogel with a thickness of 3.0mm and a length and width of 15mm into the prepared FeCl 3 In the aqueous solution, stand in a refrigerator at 4°C for 48 hours;
[0044] (2) will fully infiltrate FeCl 3 The BC hydrogel was taken out and directly put into 1000mL of deionized water at a temperature of 70°C for in-situ hydrolysis reaction. During the hydrolysis process, fresh deionized water was replaced every 20 minutes until the deionized water was completely colorless and transparent. Without adding any other reagents, the iron-containing active material precursor is deposited on the surface of BC nanofibers, and the hydrolyzed composite material is obtained after the reaction is completed;
[0045] (3) Freeze-dry the prepared hydrolyzed composite hydrogel to obtain the corresponding airgel; the...
Embodiment 3
[0052] A preparation method of a conductive ternary composite material, specifically comprising the following steps:
[0053] (1) Prepare 50mg·mL -1 FeCl 3 Aqueous solution, add BC hydrogel with a thickness of 3.0mm and a length and width of 15mm into the prepared FeCl 3 In the aqueous solution, stand in a refrigerator at 4°C for 48 hours;
[0054] (2) will fully infiltrate FeCl 3 The BC hydrogel was taken out, and directly put into 1000mL deionized water with a water temperature of 80°C for in-situ hydrolysis reaction. During the hydrolysis process, fresh deionized water was replaced every 20 minutes until the deionized water was completely colorless and transparent. Without adding any other reagents, the iron-containing active material precursor is deposited on the surface of BC nanofibers, and the hydrolyzed composite material is obtained after the reaction is completed;
[0055] (3) Freeze-dry the prepared hydrolyzed composite hydrogel to obtain the corresponding airge...
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