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Preparation method of graphene micro-wrinkle friction nano-generator

A nano-generator and graphene technology, applied in the direction of triboelectric generators, chemical instruments and methods, circuits, etc., can solve the problems of short service life and small friction area, and achieve good adhesion, increase friction contact area, and not easy to damage Effect

Pending Publication Date: 2022-01-18
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Claims
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Problems solved by technology

[0004] The currently prepared graphene friction nanogenerators, rGO are all planar structures, which not only have a small friction area when generating electricity, but also have a relatively short service life.

Method used

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  • Preparation method of graphene micro-wrinkle friction nano-generator

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Embodiment 1

[0014] The steps to prepare shape memory polypropylene carbonate (SMPPC) / rGO microfolds by controlling the amount of recovery deformation are as follows: the two ends of the pre-stretched SMPPC / rGO film are clamped on the tensile machine, and the temperature is 40 °C (PPC glass transition temperature is about 30 °C). ), respectively controlled the recovery deformation of the film to 0%, 50%, 100%, and 150%, and then lowered the temperature to 5°C to fix the deformation, and made rGO microfolds with different shapes and sizes.

[0015] The steps of using SMPPC / rGO microfolds to construct TENGs are as follows: SMPPC / rGO microfolds are used as the positive electrode friction material, aluminum is used as the positive electrode, the negative electrode friction material is PVDF, and aluminum is used as the negative electrode. Wrinkled triboelectric nanogenerators. Finally, a constant force of 3N acts on the nanogenerator to test its output current and voltage. Performance test res...

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Abstract

The invention discloses a preparation method of graphene micro-wrinkle friction nano-generators, The preparation method comprises a preparation process of a shape memory polymer / graphene (rGO) micro-wrinkle positive electrode friction material for the friction nano-generators (TENGs). The preparation method is mainly characterized in that rGO micro-wrinkles with different morphologies prepared on a shape memory polymer substrate are used as the positive electrode friction material, polyvinylidene fluoride (PVDF) is used as a negative electrode friction material, the rGO micro-wrinkles with different morphologies are obtained by controlling different recovery ratios of polymers, and compared with rGO with a common plane structure, the micro-wrinkle structure increases the friction contact area, and benefits the increase of the number of transferred electrons, so that the output performance of the TENGs is greatly improved; meanwhile, the TENGs are well attached to the substrate film through the unique micro-fold structure and are not prone to damage, and the service life of the TENGs is prolonged.

Description

technical field [0001] The invention designs a preparation method of graphene micro-wrinkle friction nanogenerator. The fabrication method of shape memory polymer / graphene (rGO) microwrinkled cathode friction materials for triboelectric nanogenerators (TENGs) is included. It involves the field of microfolds and triboelectric nanogenerators, specifically involving graphene (rGO) microfolds with different shapes prepared on biodegradable shape memory polymer substrates as positive electrode friction materials, and polyvinylidene fluoride (PVDF) as negative electrode friction materials , by controlling different recovery ratios of shape memory polymers, rGO microfolds with different morphologies are obtained, thereby improving the electrical output performance of TENG. Background technique [0002] Micro-wrinkles are a structure formed by different deformations between two films of different modulus bonded together due to certain stimuli. Because the deformation between the t...

Claims

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Application Information

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IPC IPC(8): H02N1/04C01B32/194C09K3/14B81C1/00B81B7/00
CPCH02N1/04C01B32/194C09K3/1436B81C1/00134B81B7/0009
Inventor 万同程博闻王劭妤王彪张欢朱啸寒李硕
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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