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Friction electricity generator with conductive liquid as electrode, generating method and sensor

A technology of triboelectric generators and conductive liquids, applied in the fields of sensors and triboelectric generators, achieving great application prospects, simple preparation methods, and a wide range of applications

Active Publication Date: 2017-05-03
BEIJING INST OF NANOENERGY & NANOSYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been reports on stretchable and shape-adaptive energy harvesting devices, but these devices have limited stretchability and shape adaptability.

Method used

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  • Friction electricity generator with conductive liquid as electrode, generating method and sensor
  • Friction electricity generator with conductive liquid as electrode, generating method and sensor
  • Friction electricity generator with conductive liquid as electrode, generating method and sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The triboelectric generator using the conductive liquid as an electrode in this embodiment includes: a power generation unit composed of a conductive liquid 1 and a polymer layer 2, figure 1 It is a schematic diagram of the structure of the power generation unit cut from the vertical section, wherein the conductive liquid 1 is located inside the polymer layer 2, and the conductive liquid 1 is electrically connected to the electrode unit.

[0038] The conductive liquid 1 can be electrically connected with the electrode unit through the wire passing through the polymer layer. In addition to silicone rubber, the material of the polymer layer can also use nitrile rubber, polyethylene, polytetrafluoroethylene, polypropylene, polyester and other materials; the conductive liquid can be liquid metal such as liquid gallium, liquid mercury, etc., liquid Alloys such as liquid gallium indium alloys, etc., can also be conductive solutions such as acid solutions, alkali solutions, sa...

Embodiment 2

[0048] In the triboelectric generator using conductive liquid as an electrode in this embodiment, the power generation unit is the same as the power generation unit in Embodiment 1, except that the electrode unit can include a metal layer, or a metal electrode plated on one side of the insulating layer, Or another conductive liquid of the power generation unit, when the electrode unit contacts and separates from the polymer layer 2, a current is formed between the conductive liquid 1 and the electrode unit. It is required that the material of the electrode unit in contact with the power generation unit and the material of the polymer layer of the power generation unit have different electron gain and loss capabilities. This structure is a triboelectric generator in the working mode of the auxiliary electrode.

[0049] The electrode unit includes an insulating layer 4 coated with a metal electrode 3 on one side, and the conductive liquid 1 is electrically connected to the metal...

Embodiment 3

[0054] In this embodiment, two power generation units described in Embodiment 1 are included, one of which is an electrode unit, see Figure 5 , when the objects 6 having different electron gain and loss capabilities from the materials of the polymer layers of the two power generating units rub against each other during the reciprocating motion of the polymer layers of the two power generating units, a current is formed between the conductive liquids of the two power generating units. The generator of this structure is a free-moving triboelectric generator.

[0055] The working process of the generator of the present embodiment is that when the object 6 periodically moves back and forth on the surfaces of two generating units placed side by side (in contact with or without contact), the potential difference between the two conductive liquid electrodes changes, and the driving electrons move between the two electrodes. Two conductive liquid electrodes move back and forth, there...

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Abstract

The invention provides a friction electricity generator with a conductive liquid as an electrode, a generating method and a sensor using the generator. The generating unit of the friction electricity generator comprises the conductive liquid and a polymer layer coating the conductive liquid, the conductive liquid and the electrode unit are electrically connected, under effects of external mechanical energy, electric potential difference is formed between the conductive liquid and the electrode unit, electrons are driven to perform to-and-fro movement between the conductive liquid and the electrode unit, and alternating current is thus generated. The friction electricity generator has high shape adaptability and high extensibility, the friction electricity generator can be made into any shape and any size, such as a shoe pad shape, a cushion shape, a bracelet shape and a mattress shape and the like, and has a large application prospect in fields of sports, recreational facilities, buildings, biological products, medical treatment, safety protection and the like.

Description

technical field [0001] The invention relates to an energy collection device, in particular to a triboelectric generator using conductive liquid as an electrode, a power generation method and a sensor using the generator. Background technique [0002] At present, there are many kinds of energy harvesting devices, such as solar generators that use sunlight to generate electricity, thermoelectric generators that use temperature differences to generate electricity, generators that use coils to cut magnetic lines of force to generate electricity, piezoelectric generators that use pressure changes to generate electricity, etc. Wait. Triboelectric generators use friction effects and electrostatic induction effects to convert extremely small mechanical energy into electrical energy. The movement of water, the movement of wind, the vibration of objects in daily life, and the movement of the human body can all become the power source of the triboelectric generator; at the same time, ...

Claims

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Application Information

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IPC IPC(8): H02N1/04
Inventor 王中林张跃衣芳王晓峰牛思淼
Owner BEIJING INST OF NANOENERGY & NANOSYST
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