Electrolyte composition, and energy storage device employing the same

Patent metadata

Field	Value
Publication number	US-2017005352-A1
Application number	US-201514935123-A
Country	US
Kind code	A1
Filing date	Nov 6, 2015
Priority date	Jun 30, 2015
Publication date	Jan 5, 2017
Grant date	—

Abstract

An electrolyte composition and an energy storage device employing the same are provided. The electrolyte composition includes a solid and a solution. The solid includes a core and a metal layer encapsulating the core, where the metal layer is selected from a group consisting of Zn, Al, Mg, Li, Na and the metal oxides thereof. In particular, the solid has a first density and the solution has a second density, and the ratio between the first density and the second density is from about 0.97 to 1.03.

First claim

What is claimed is:

1 . An electrolyte composition, comprising:
a solid, wherein the solid includes a substrate and a metal layer covering the substrate, and wherein the metal layer is selected from a group consisting of Zn, Al, Mg, Li, Na and metal oxides thereof; and a solution, wherein the solid has a first density, and the solution has a second density, and wherein the ratio between the first density and the second density is from about 0.97 to 1.03.

2 . The electrolyte composition as claimed in claim 1 , wherein the solid has a spherical shape, elongated shape, polyhedral shape, or a combination thereof.

3 . The electrolyte composition as claimed in claim 2 , wherein the solid has a spherical shape and has a sphericity of between 0.4 and 1.

4 . The electrolyte composition as claimed in claim 3 , wherein the substrate has a particle size of between 50 nm and 10 μm.

5 . The electrolyte composition as claimed in claim 1 , wherein the substrate is a conductive material.

6 . The electrolyte composition as claimed in claim 5 , wherein the conductive material is a conductive polymer, carbon material, or a combination thereof.

7 . The electrolyte composition as claimed in claim 6 , wherein the conductive polymer is polyaniline, polyphenylene sulfide, polypyrrole, poly(p-phenylene, polythiophene, poly(p-phenylene vinylene), polyfluorene, polyacetylene, or a combination thereof.

8 . The electrolyte composition as claimed in claim 6 , wherein the carbon material is carbon nanotube, carbon capsule, carbon fiber, or a combination thereof.

9 . The electrolyte composition as claimed in claim 1 , wherein the substrate is a non-conductive material.

10 . The electrolyte composition as claimed in claim 9 , wherein the non-conductive material is polymer material, inorganic material, or a combination thereof.

11 . The electrolyte composition as claimed in claim 10 , wherein the inorganic material is titanium oxide, zirconium oxide, silicon oxide, zeolite or a combination thereof.

12 . The electrolyte composition as claimed in claim 10 , wherein the polymer material is polycarbonate, polyethylene terephthalate, polyethylene, polyvinylchloride, polypropylene, polyacrylonitrile, phenol-formaldehyde resin, melamine formaldehyde resin, polystyrene, polymethyl methacrylate, or a combination thereof.

13 . The electrolyte composition as claimed in claim 1 , further comprising a conductive layer disposed between the substrate and the metal layer.

14 . The electrolyte composition as claimed in claim 13 , wherein the conductive layer is made of Ni, Ti, Sn, or conductive polymer.

15 . The electrolyte composition as claimed in claim 1 , wherein the first density of the solid is from 1.5 to 6.

16 . The electrolyte composition as claimed in claim 1 , wherein the second density of the solution is form 1.455 to 6.18.

17 . The electrolyte composition as claimed in claim 1 , wherein the solution comprises a solvent, and a solute, wherein the solute is metal oxide compound, alkaline compound, or a combination thereof.

18 . The electrolyte composition as claimed in claim 17 , wherein the solvent comprises water.

19 . The electrolyte composition as claimed in claim 17 , wherein the alkaline compound is sodium carbonate, potassium carbonate, sodium bicarbonate, sodium hydroxide, potassium hydroxide, tetra-methyl ammonium hydroxide, or a combination thereof.

20 . The electrolyte composition as claimed in claim 17 , wherein the metal oxide compound comprises zinc oxide, aluminum oxide, magnesium oxide, lithium oxide, sodium oxide, or a combination thereof.

21 . An energy storage device, comprising:
an anode; a cathode; an isolation membrane disposed between the anode and the cathode; and the electrolyte composition as claimed in claim 1 .

Assignees

• Ind Tech Res Inst

Inventors

• Wu Ching-Chen
• Yang Chang-Chung
• Wu Chun-Hsing
• Chang Wen-Sheng
• Hsueh Kan-Lin

Classifications

• H01M4/366

  as layered products · CPC title

• H01M4/382

  Lithium (H01M4/405 takes precedence) · CPC title

• H01M10/056 Primary

  characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes · CPC title

• H01M4/62

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title

• H01M2300/0014

  Alkaline electrolytes · CPC title