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Flexible piezoelectric energy collector based on negative poisson ratio macroscopic graphene film

An energy harvester and graphene film technology, applied in the direction of graphene, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the difficult application of wearable devices, limit the flexibility of devices, and the lack of flexibility and other issues to achieve the effect of improving the electrical output performance

Pending Publication Date: 2020-09-18
武汉汉烯科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this type of rigid vibration piezoelectric energy harvester is not flexible enough to be applied in wearable devices; the negative Poisson's ratio effect is introduced by the structural design of the stainless steel substrate, which also limits the flexibility of the device

Method used

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  • Flexible piezoelectric energy collector based on negative poisson ratio macroscopic graphene film
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  • Flexible piezoelectric energy collector based on negative poisson ratio macroscopic graphene film

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Embodiment Construction

[0031] The principles and features of the present invention are described below, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0032] In the description of this patent, the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "horizontal", "longitudinal", etc. are only for the convenience of describing this patent and simplifying the description, and cannot be understood as Limitations on this Patent.

[0033] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "bonding", "connecting", "coating", "lamination", "fixing" and the like represent mutual connection relations The term should be interpreted broadly. Those of ordinary skill in the art can understand the specific meanings of the above terms in this patent according to specific situations.

[0034] Such as figure 1 As shown, ...

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Abstract

The invention relates to a flexible piezoelectric energy collector based on a negative poisson ratio macroscopic graphene film. The collector comprises a flexible substrate, and a laminated structurepiezoelectric power generation unit fixed on the surface of the flexible substrate. A wire is arranged on the surface of the laminated structure piezoelectric power generation unit. The wire is used for leading out charges / voltages generated after tensile deformation of the flexible piezoelectric energy collector, and the laminated structure piezoelectric power generation unit comprises a negativepoisson ratio macroscopic graphene film and a flexible piezoelectric film. According to the invention, flexibility and high conductivity are utilized, the energy collector has a macroscopic graphenefilm with negative Poisson's ratio effect, a negative Poisson's ratio effect is introduced into the flexible piezoelectric energy collector. By means of the strain coupling between the piezoelectric film and the negative poisson ratio macroscopic graphene film in the laminated structure piezoelectric power generation unit, the tensile deformation of the piezoelectric film is changed from the original one-way stretching into stretching in two vertical directions in the plane when the device works, so that the electric output performance of the device is improved.

Description

technical field [0001] The invention relates to the technical field of environmental energy collection, in particular to a flexible piezoelectric energy harvester based on a negative Poisson's ratio macroscopic graphene film. Background technique [0002] In recent years, with the development of electronic information technology and the progress of human social life, wearable electronics has shown a broad market prospect. At the same time, the energy crisis and environmental pollution caused by the excessive consumption of fossil fuels have prompted people to look for new types of renewable energy to power these electronic devices. In wearable devices, the collection and utilization of mechanical energy related to human motion, such as the bending of fingers, elbows and other joints, the stepping of feet during walking, even the beating of the heart or pulse, and the expansion of the chest during breathing, can be conveniently used for Powering wearable smart electronics. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18C01B32/184C01B32/198
CPCH02N2/186H02N2/22C01B32/184C01B32/198C01B2204/32C01B2204/22C01B2204/26
Inventor 何大平沈杰张华章
Owner 武汉汉烯科技有限公司
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