Method for improving bending resistance of flexible electrochemical energy storage device of sandwich structure
An electrochemical and sandwich technology is applied in the field of enhancing the bending resistance of sandwich-structured flexible electrochemical energy storage devices, which can solve problems such as poor contact and short-circuit interface, and achieve the effects of preventing local thinning, widening materials, and enhancing aesthetics.
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Embodiment 1
[0020] This embodiment provides a method for improving the bending resistance of a sandwich structure flexible electrochemical energy storage device. The method uses thread-like objects to sew the flexible electrochemical energy storage device. The specific steps are as follows:
[0021] Step 1. Prepare the carbon cloth-based positive and negative plates and solidified gel electrolyte, place them in the order of positive electrode, solidified gel electrolyte, and negative electrode, and assemble them into a sandwich structure electrochemical energy storage device;
[0022] Step 2. After the sandwich structure electrochemical energy storage device is assembled, fix the position of the device with adhesive tape, and use a sewing needle to penetrate the cotton thread (or other thread) and sew it up. The suture sites are arranged horizontally and vertically, with a horizontal spacing of 1 cm and a vertical spacing of 1cm.
Embodiment 2
[0024] This embodiment provides a method for improving the bending resistance of a sandwich structure flexible electrochemical energy storage device. The method uses thread-like objects to sew the flexible electrochemical energy storage device. The specific steps are as follows:
[0025] Step 1. Place two pieces of 2cm×1cm carbon cloth overlapping each other so that the overlapping area is 1×1cm. Use the needle thread to penetrate the coincidence along the diagonal and the parallel lines on both sides of the diagonal, but do not stitch together (needle does not detach). On each parallel line, the distance between suture sites was 0.4 cm, and the interval between parallel lines was 0.5 cm.
[0026] Step 2. Use the coating method to coat the graphene oxide slurry on two carbon cloths respectively. The coating area is the 1×1 cm overlap described in step 1. After drying at room temperature overnight, place one of the carbon cloths on a 3 x 3 cm plastic mold with the coated side ...
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