Ag concentration gradient three-dimensional skeleton as well as preparation method and application thereof
A three-dimensional skeleton and concentration gradient technology, which is applied in rayon manufacturing, fiber chemical characteristics, textiles and paper making, etc., can solve the problems of low cycle reversibility, large safety hazards, short cycle life, etc., and achieve efficient regulation and high safety , the effect of high energy density
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Embodiment 1
[0036] A method for preparing a three-dimensional skeleton with an Ag concentration gradient, comprising the following steps:
[0037] (1) 10wt% PAN is added into 4mL by DMF and acetone according to the mixed solution that 9:1 mass ratio is made, then add 10wt% silver perchlorate to obtain spinning solution b1; 10wt%PAN is added into 4mL by DMF and Acetone is made according to the mass ratio of 9:1 in the mixed solution, then add 5wt% silver perchlorate to obtain spinning solution b2; In the solution, add 0 wt% silver perchlorate to obtain spinning solution b3; under the condition of 25°C, stir at 500r / min stirring speed for 12h to obtain uniformly dispersed spinning solutions b1, b2 and b3;
[0038] (2) Through the electrospinning instrument, the spinning solution b1, b2 and b3 obtained in step (1) are sequentially accumulated and spun on the copper foil collector according to the silver concentration gradient order, and the specific sequence is: spinning solution b1 → spinni...
Embodiment 2
[0043] A method for preparing a three-dimensional skeleton with an Ag concentration gradient, comprising the following steps:
[0044] (1) Add 10wt% PVDF to 4mL of a mixed solution made of DMF and acetone at a mass ratio of 6:4, then add 20wt% silver acetate to obtain spinning solution b1; add 10wt% PVDF to 4mL of DMF and acetone according to In the mixed solution that the mass ratio of 6:4 is made, add 15wt% silver acetate to obtain spinning solution b2 again; 10wt% PVDF is added in 4mL by DMF and acetone according to the mixed solution that 6:4 is made in the mass ratio, again Add 10wt% silver acetate to obtain spinning solution b3; under the condition of 25°C, stir at 500r / min stirring speed for 12h to obtain uniformly dispersed spinning solutions b1, b2, b3.
[0045](2) Through the electrospinning instrument, the obtained spinning solutions b1, b2 and b3 are sequentially accumulated and spun on the copper foil collector according to the silver concentration gradient order,...
Embodiment 3
[0050] A method for preparing a three-dimensional skeleton with an Ag concentration gradient, comprising the following steps:
[0051] (1) Add 10wt% PVDF to 4mL of a mixed solution made of DMF and acetone at a mass ratio of 7:3, then add 10wt% silver nitrate to obtain spinning solution b1; add 10wt% PVDF to 4mL of DMF and acetone according to In the mixed solution that the mass ratio of 7:3 is made, add 5wt% silver nitrate again and obtain spinning solution b2; Add 10wt% PVDF in 4mL by DMF and acetone in the mixed solution that is made according to the mass ratio of 7:3, again Add 0wt% silver nitrate to obtain spinning solution b3; at 25°C, stir at a stirring speed of 500r / min for 12h to obtain evenly dispersed spinning solutions b1, b2, b3;
[0052] (2) Through the electrospinning instrument, the spinning solution b1, b2 and b3 obtained in the step (1) are sequentially accumulated and spun on the copper foil collector according to the silver concentration gradient order, and ...
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