Electrode and device employing the same

Patent metadata

Field	Value
Publication number	US-2019097240-A1
Application number	US-201816142368-A
Country	US
Kind code	A1
Filing date	Sep 26, 2018
Priority date	Sep 27, 2017
Publication date	Mar 28, 2019
Grant date	—

Abstract

An electrode and a device employing the same are provided. The electrode can include a metal network structure, and a hollow active material network structure. In particularly, the metal network structure is disposed in the hollow active material network structure. The weight ratio of the metal network structure to the hollow active material network structure is from 0.5 to 155.

First claim

What is claimed is:

1 . An electrode, comprising:
a metal network structure; and a hollow active material network structure, wherein the metal network structure is disposed in the hollow active material network structure, wherein the weight ratio of the metal network structure to the hollow active material network structure is from 0.5 to 155.

2 . The electrode as claimed in claim 1 , wherein the metal network structure is a metal foam.

3 . The electrode as claimed in claim 2 , wherein the metal foam is nickel foam, iron foam, copper foam, titanium foam, cobalt foam, or an alloy foam thereof

4 . The electrode as claimed in claim 1 , wherein the hollow active material network structure is graphite, or layered active layer.

5 . The electrode as claimed in claim 1 , wherein the thickness of the electrode is from 100 nm to 10 mm.

6 . The electrode as claimed in claim 1 , wherein the hollow active material network structure is a continuous structure.

7 . The electrode as claimed in claim 1 , wherein the hollow active material network structure is a non-continuous structure.

8 . The electrode as claimed in claim 7 , wherein the area ratio of the surface, which is covered by the hollow active material network structure, of the metal network structure to the whole surface of the metal network structure is 0.01 to 0.95.

9 . The electrode as claimed in claim 1 , further comprising a plurality of voids disposed in the hollow active material network structure.

10 . The electrode as claimed in claim 9 , wherein the volume ratio of the voids to the metal network structure is from 99 to 1.

11 . A method for fabricating an electrode, comprising:
providing a metal network structure; and depositing an active material on the surface of the metal network structure, obtaining the electrode, wherein the weight ratio of the metal network structure and the hollow active material network structure is from 0.5 to 155.

12 . The method as claimed in claim 11 , further comprising:
subjecting the electrode to a wet etching to remove a part of the metal network structure, forming a plurality of voids.

13 . A device, includes:
a first electrode, wherein the first electrode is the electrode as claimed in claim 1 ; a first separator; a second electrode, wherein the first electrode is separated from the second electrode by the first separator; and an electrolyte disposed between the first electrode and the second electrode.

14 . The device as claimed in claim 13 , wherein the electrolyte comprises an ionic liquid and a metal halide, wherein the ionic liquid is choline chloride, ethylchlorine chloride, alkali halide, alkylimidazolium salt, alkylpyridinium salt, alkylfluoropyrazolium salt, alkyltriazolium salt, aralkylammonium salt, alkylalkoxyammonium salt, aralkylphosphonium salt, aralkylsulfonium salt, or a combination thereof.

15 . The device as claimed in claim 13 , wherein the electrolyte comprises a solution and a metal halide, wherein the solution is urea, N-methylurea, dimethyl sulfoxide, methylsulfonylmethane, or a combination thereof.

16 . The device as claimed in claim 13 , further comprising a third electrode and a second separator, wherein the first electrode is separated from the third electrode by the second separator.

Assignees

• Ind Tech Res Inst

Inventors

• Chen Kuang-Yao
• Huang Ting-Wei
• Chiang Chien-Chih
• Wu Chun-Hsing
• Chang Wen-Sheng
• Yang Chang-Chung

Classifications

• H01M4/661

  Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title

• H01M4/587

  for inserting or intercalating light metals · CPC title

• H01M10/0569

  characterised by the solvents · CPC title

• H01M10/0568

  characterised by the solutes · CPC title

• H01G9/035

  Liquid electrolytes, e.g. impregnating materials (H01G11/54 takes precedence) · CPC title