Stretchable electrode based on conductive fabric and preparation method thereof
A conductive fabric and electrode technology, which is applied in the direction of bendable/stretchable components, electrical components, printed circuits, etc., can solve the problems of poor stretchability and complicated preparation process of flexible electrodes, and achieve good stretchability, The effect of good electrical conductivity and good tensile properties
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Embodiment 1
[0033] Such as figure 1 As shown, the stretchable electrode based on conductive fabric in this embodiment is obtained by pre-stretching the stretchable conductive fabric and then dipping it in a conductive solution. The stretchable conductive fabric is Lycra fabric 1, and the conductive solution is an aqueous solution of single-walled carbon nanotubes 2.
[0034] The preparation method of the stretchable electrode based on conductive fabric in this embodiment is as follows:
[0035] Step 1, preparing an aqueous solution of single-walled carbon nanotubes
[0036] Weigh 0.5 g of single-walled carbon nanotubes with a purity of not less than 90%, a diameter of 1-2 nm, and a length of 20 ± 2 μm and 2.5 mg of dodecyl methylsulfonate, add 50 mL of deionized water, mix and stir evenly, Obtain a mixed solution; ultrasonically disperse the mixed solution for 15 minutes and then mechanically stir for 30 minutes to obtain an aqueous solution of single-walled carbon nanotubes;
[0037] ...
Embodiment 2
[0049] In this example, a stretchable electrode is prepared in the same manner as in Example 1, the only difference is that the Lycra fabric is treated in the following order after dipping in step 3: no treatment, only treatment with a concentration of 4M nitric acid solution for 10 minutes, only treatment with Alcohol solution for 30 minutes.
[0050] After testing, the sheet resistances of the obtained electrodes were 460±0.1Ω / □, 287±0.1Ω / □, and 355±0.1Ω / □ in turn, all of which were much higher than those of the product in Example 1. It can be seen that the composite conductive fabric treated sequentially with nitric acid and alcohol has the smallest square resistance and the best conductivity. Therefore, utilize the fixing principle of cloth dyeing, select nitric acid and alcohol to process composite conductive fabric in the present invention.
Embodiment 3
[0052] In this example, a stretchable electrode was prepared in the same manner as in Example 1, the only difference being that the concentrations of single-walled carbon nanotubes in the aqueous solution of step 1 were 0.002 g / mL, 0.004 g / mL, and 0.006 g / mL. g / mL, 0.008g / mL, 0.012g / mL, 0.014g / mL.
[0053] After testing, the sheet resistance of each electrode obtained is 521±0.1Ω / □, 386±0.1Ω / □, 230±0.1Ω / □, 127±0.1Ω / □, 67±0.1Ω / □, 70±0.1 Ω / □, all greater than the product in Example 1. It can be seen that as the concentration of single-walled carbon nanotubes increases, the square resistance decreases. When the concentration reaches 0.010g / mL, the square resistance is the smallest, and then continues to increase the concentration. The square resistance begins to increase, and it can be seen that the solution is saturated. Therefore, the concentration of single-walled carbon nanotubes selected in the present invention is 0.010 g / mL.
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Abstract
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