Porous electrode active material and secondary battery including the same

Patent metadata

Field	Value
Publication number	US-9512523-B2
Application number	US-201213566553-A
Country	US
Kind code	B2
Filing date	Aug 3, 2012
Priority date	Apr 19, 2012
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

Provided are an electrode active material having a plurality of pores and a secondary battery including the same, and more particularly, a porous electrode active material including silicon-based oxide expressed by SiO x (0.5≦x≦1.2) and having a Brunauer, Emmett, and Teller (BET) specific surface area ranging from 2 m 2 /g to 100 m 2 /g, and a secondary battery including a cathode including a cathode active material, a separator, an anode including an anode active material, and an electrolyte, in which the anode active material includes a porous electrode active material including silicon-based oxide expressed by SiO x (0.5≦x≦1.2) and having a BET specific surface area ranging from 2 m 2 /g to 100 m 2 /g.

First claim

What is claimed is:

1. A porous electrode active material comprising silicon-based oxide expressed by SiO x (0.5≦x≦1.2) and having a Brunauer, Emmett, and Teller (BET) specific surface area ranging from 2 m 2 /g to 100 m 2 /g,
wherein porosity is in a range of from 5% to 90%, and
wherein pores in a honeycomb shape are included at least on a surface of the porous electrode active material.

2. The porous electrode active material of claim 1 , wherein the SiO x is silicon monoxide.

3. A secondary battery comprising:
a cathode including a cathode active material;
a separator;
an anode including an anode active material; and
an electrolyte,
wherein the anode active material comprises the porous electrode active material of any one of claims 1 or 2 .

4. The secondary battery of claim 3 , wherein the anode electrode active material further comprises one or more selected from the group consisting of graphite, soft carbon, hard carbon, and lithium titanium oxide.

Assignees

• Lee Yong Ju
• Park Soo Jin
• Jung Dong Sub
• Jung Hye Ran
• Lee Jung In
• Kim Je Young
• Cho Jae Phil
• Lg Chemical Ltd
• Unist (Ulsan Nat Inst Of Science And Technology)

Inventors

• Lee Yong Ju
• Park Soo Jin
• Jung Dong Sub
• Jung Hye Ran
• Lee Jung In
• Kim Je Young
• Cho Jae Phil

Classifications

• C23C18/54 Primary

  Contact plating, i.e. electroless electrochemical plating · CPC title

• H01M4/485

  of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title

• H01M4/625

  Carbon or graphite · CPC title

• Y02E60/122

  Cross-Sectional Technologies · mapped topic

• Y02E60/10

  Energy storage using batteries · CPC title