Lithium battery comprising a gel-electrolyte

• US 6,444,368 B1
• Filed: 11/13/2000
• Issued: 09/03/2002
• Est. Priority Date: 11/11/1999
• Status: Expired due to Fees

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Hikmet, Rifat Ata Mustafa, Feil, Hans
• Primary Examiner(s): Chaney, Carol
• Assistant Examiner(s): Scaltrito, Donald V.
• Application Number:
  US09/710,913
• Time in Patent Office: 659 Days
• Field of Search: 429/127, 429/130, 429/142, 429/162, 429/188, 429/246, 429/300, 429/303
• US Class Current: 429/300
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 2004/027 Negative electrodes
• CPC Class Codes: H01M 2010/4292 Aspects relating to capacity ratio of electrodes/electrolyte or anode/cathode
• CPC Class Codes: H01M 4/50 of manganese
• CPC Class Codes: H01M 4/587 for inserting or intercalating light metals
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A lithium battery includes a negative electrode, a positive electrode, a separator, and a non-aqueous electrolyte solution between the negative and the positive electrodes. At least the negative electrode material and the positive electrode material are provided with a pattern of holes which accommodate a polymeric material which sticks and presses the negative electrode, the positive electrode and the separator together. In order to decrease the tendency of the electrolyte solution to sublime, thereby expanding the packaging material around the battery, the non-aqueous electrolyte solution comprises a solution of lithium salts, solvent molecules and a polymer, forming a gel-electrolyte.

Claims

1. A lithium battery comprising:

a negative electrode, comprising negative electrode material and a negative current collector;

a positive electrode, comprising positive electrode material and a positive current collector;

a separator, separating the negative electrode and the positive electrode; and

a non-aqueous electrolyte solution between the negative and the positive electrode,

wherein at least the negative electrode material and the positive electrode material are provided with a pattern of holes which accommodate a material which sticks and presses the negative electrode, the positive electrode and the separator together, characterized in that the non-aqueous electrolyte solution comprises a solution of lithium salts, solvent molecules and a polymer, forming a gel-electrolyte, wherein the polymer comprises a polymeric gelling agent.

2. A lithium battery comprising:

a negative electrode, comprising negative electrode material and a negative current collector;

a positive electrode, comprising positive electrode material and a positive current collector;

a separator, separating the negative electrode and the positive electrode; and

a non-aqueous electrolyte solution between the negative and the positive electrode,

wherein at least the negative electrode material and the positive electrode material are provided with a pattern of holes which accommodate a material which sticks and presses the negative electrode, the positive electrode and the separator together, characterized in that the non-aqueous electrolyte solution comprises a solution of lithium salts, solvent molecules and a polymer, forming a gel-electrolyte, wherein the separator consists of the gel-electrolyte.