Low frequency kinetic energy harvester

Patent metadata

Field	Value
Publication number	US-10972018-B2
Application number	US-201916292680-A
Country	US
Kind code	B2
Filing date	Mar 5, 2019
Priority date	Sep 14, 2018
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

A kinetic energy harvester includes a P-type hydrogel composite electrode; an N-type hydrogel composite electrode; a separator disposed between the P-type hydrogel composite electrode and the N-type hydrogel composite electrode; and a current collector between the P-type hydrogel composite electrode and the N-type composite electrode.

First claim

What is claimed is:

1. A kinetic energy harvester comprising:
a p-type hydrogel composite electrode;
an n-type hydrogel composite electrode;
a separator disposed between the P-type hydrogel composite electrode and the N-type hydrogel composite electrode; and
a current collector between the P-type hydrogel composite electrode and the N-type composite electrode,
wherein each of the P-type hydrogel composite electrode and the N-type hydrogel composite electrode includes a hierarchical conductor network.

2. The kinetic energy harvester of claim 1 , wherein the P-type hydrogel composite electrode comprises:
a polymer hydrogel layer comprising mobile cations; and
a first material which increases a conductivity of the polymer hydrogel layer, wherein the first material comprises carbon nanotube, silver nanowire, or a combination thereof.

3. The kinetic energy harvester of claim 1 , wherein the N-type hydrogel composite electrode comprises:
a polymer hydrogel layer comprising mobile anions; and
a second material which increases a conductivity of the polymer hydrogel layer, wherein the second material comprises carbon nanotube, silver nanowire, or a combination thereof.

4. The kinetic energy harvester of claim 2 , wherein the polymer hydrogel layer comprising mobile cations comprises Nafion, sulfonated poly(ether ether ketone), sulfonated poly(arylene ether ketone ketone sulfone), sulfonated poly(aryl ether ketone), poly[bis(benzimidazobenzisoquinolinones)], poly(styrene sulfonic acid), sodium 9,10-diphenylanthracene-2-sulfonate, or a combination thereof.

5. The kinetic energy harvester of claim 3 , wherein the polymer hydrogel layer comprising mobile anions comprises poly(diallyl dimethylammonium chloride), quaternary ammonium polysulphone, tris(2,4,6-trimethoxyphenyl) polysulfone methylene quaternary phosphonium hydroxide, quaternized poly(vinyl alcohol), quaternized poly(ether imide), [Ru(bpy) 3 ] 2+ (PF 6− ) 2 , or a combination thereof.

6. The kinetic energy harvester of claim 2 , wherein the hierarchical conductor network in the P-type hydrogel composite electrode is formed by the first material.

7. The kinetic energy harvester of claim 3 , wherein the hierarchical conductor network in the N-type hydrogel composite electrode is formed by the second material.

8. The kinetic energy harvester of claim 2 , wherein the first material comprises carbon.

9. The kinetic energy harvester of claim 3 , wherein the second material comprises carbon.

10. The kinetic energy harvester of claim 2 , wherein a content of each of the carbon nanotube and the silver nanowire is about 5 weight percent to about 20 weight percent, based on a total weight of the first material.

11. The kinetic energy harvester of claim 3 , wherein a content of each of the carbon nanotube and the silver nanowire is about 5 weight percent to about 20 weight percent, based on a total weight of the second material.

12. A kinetic energy harvester stack, comprising:
two or more kinetic energy harvester units disposed adjacent to each other, wherein each kinetic energy harvester unit comprises
a p-type hydrogel composite electrode,
an n-type hydrogel composite electrode, and
a separator disposed between the p-type hydrogel composite electrode and the n-type hydrogel composite electrode; and

a current collector disposed on a top layer of the stack, a bottom layer of the stack, or a combination thereof,
wherein each of the p-type hydrogel composite electrode and the n-type hydrogel composite electrode includes a hierarchical conductor network.

13. The kinetic energy harvester stack of claim 12 , further comprising an ion barrier layer disposed between the energy harvester units.

Assignees

• Samsung Electronics Co Ltd
• Penn State Res Found

Inventors

• Choi Kyounghwan
• Zhang Qiming
• Wang Qing
• Zhang Yong
• Jeong Changkyu

Classifications

• H02N11/002 Primary

  Generators · CPC title

• C08L101/12

  characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity (liquid crystal materials or compositions C09K19/00) · CPC title

• H02N1/04 Primary

  Friction generators · CPC title