Triboelectric nanogenerator

Patent metadata

Field	Value
Publication number	US-9543860-B2
Application number	US-201514818982-A
Country	US
Kind code	B2
Filing date	Aug 5, 2015
Priority date	Mar 1, 2013
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A generator includes a first cylindrical member and a second cylindrical member. The first cylindrical member includes a first dielectric layer including a first material that has a first rating on a triboelectric series; and a first conductive strip disposed around an exterior surfaces of the first cylindrical member. The first conductive strip includes a second material that has a second rating on the triboelectric series that is different from the first rating. The second cylindrical member is disposed about the first cylindrical member and includes a second dielectric layer that includes the first material. The second cylindrical member also includes the second material and at least one second conductive strip disposed around an interior surface of the second cylindrical member. A sliding mechanism causes lateral relative motion between the first cylindrical member against the second cylindrical member, generating an electric potential imbalance between the first and second conductive strip.

First claim

What is claimed is:

1. An electricity generator, comprising:
(a) a first elongated member extending along a first direction, including:
(i) a first dielectric layer including a first material that has a first rating on a triboelectric series, the first dielectric layer including an inner surface and an opposite outer surface;
(ii) a first plurality of outer conductive strips disposed around the outer surface of the first dielectric layer transversely to the first direction and evenly spaced apart from each other, the first plurality of outer conductive strips each including a second material that has a second rating on the triboelectric series that is different from the first rating, a first outer bus electrode electrically coupling each of the first plurality of outer conductive strips;
(iii) a first plurality of inner conductive strips disposed around the inner surface of the first dielectric layer transversely to the first direction and evenly spaced apart from each other, the first plurality of inner conductive strips each including the second material, the first plurality of inner conductive strips offset from first plurality of outer conductive strips so that each of the first plurality of inner conductive strips are disposed opposite from a space between successive ones of the first plurality of outer conductive strips, a first inner bus electrode electrically coupling each of the first plurality of inner conductive strips; and

(b) a second elongated member extending along the first direction and disposed about the first elongated member, including:
(i) a second dielectric layer including the first material, the second dielectric layer including an inner surface and an opposite outer surface, the inner surface of the second dielectric layer being in contact with the outer surface of the first dielectric layer; and
(ii) a second plurality of outer conductive strips disposed around the outer surface of the second dielectric layer transversely to the first direction and evenly spaced apart from each other, the second plurality of outer conductive strips each including the second material, a second outer bus electrode electrically coupling each of the second plurality of outer conductive strips; and
(iii) a second plurality of inner conductive strips disposed around the inner surface of the second dielectric layer transversely to the first direction and evenly spaced apart from each other, the second plurality of inner conductive strips each including the second material, the second plurality of inner conductive strips offset from second plurality of outer conductive strips so that each of the second plurality of inner conductive strips are disposed opposite from a space between successive ones of the second plurality of outer conductive strips, a second inner bus electrode electrically coupling each of the second plurality of inner conductive strips,
wherein the first inner bus electrode is electrically coupled to the second inner bus electrode and wherein the first outer bus electrode is electrically coupled to the second outer bus electrode, and wherein lateral relative motion between the first elongated member and the second elongated member along the first direction results in an electric potential imbalance between inner conductive strips and the outer conductive strips.

2. The electricity generator of claim 1 , wherein the plurality of first conductive strips are disposed about both in exterior surface of the first dielectric layer and an interior surface of the first dielectric layer.

3. The electricity generator of claim 1 , wherein the plurality of second conductive strips are disposed about both in exterior surface of the first dielectric layer and an interior surface of the second dielectric layer.

4. The electricity generator of claim 1 , wherein the first material comprises a polyimide film.

5. The electricity generator of claim 1 , wherein the second material comprises a copper.

6. The electricity generator of claim 1 , further comprising a foam layer disposed about the second elongated member to provide support thereto.

7. The electricity generator of claim 1 , further comprising a support elongated member about which the first elongated member is disposed that provides support thereto.

8. The electricity generator of claim 1 , wherein the first elongated member is cylindrical.

9. The electricity generator of claim 1 , wherein the second elongated member is cylindrical.

10. The electricity generator of claim 1 , further comprising nanoparticles applied to a surface of the first dielectric layer.

11. The electricity generator of claim 1 , further comprising nanoparticles applied to a surface of the second dielectric layer.

Assignees

• Wang Zhong Lin
• Zhu Guang
• Jing Quingshen
• Georgia Tech Res Inst

Inventors

• Wang Zhong Lin
• Zhu Guang
• Jing Quingshen

Classifications

• H02N1/04 Primary

  Friction generators · CPC title