Protected lithium electrodes having a porous electrolyte interlayer and associated battery cells

Patent metadata

Field	Value
Publication number	US-2016351879-A1
Application number	US-201615150231-A
Country	US
Kind code	A1
Filing date	May 9, 2016
Priority date	Feb 6, 2004
Publication date	Dec 1, 2016
Grant date	—

Abstract

Active metal and active metal intercalation electrode structures and battery cells having ionically conductive protective architecture including an active metal (e.g., lithium) conductive impervious layer separated from the electrode (anode) by a porous separator impregnated with a non-aqueous electrolyte (anolyte). This protective architecture prevents the active metal from deleterious reaction with the environment on the other (cathode) side of the impervious layer, which may include aqueous or non-aqueous liquid electrolytes (catholytes) and/or a variety electrochemically active materials, including liquid, solid and gaseous oxidizers. Safety additives and designs that facilitate manufacture are also provided.

First claim

What is claimed is:

1 . An electrochemical cell structure, comprising:
an anode comprising a material selected from the group consisting of an active metal, active metal-ion, active metal alloy, active metal alloying metal or active metal intercalating material; and an ionically conductive protective architecture on a first surface of the anode, the architecture comprising,
an active metal ion conducting separator layer comprising porous glass or ceramic, the separator layer further comprising a non-aqueous anolyte, the separator layer being chemically compatible with the active metal, and in contact with the anode, and
a substantially impervious ionically conductive layer chemically compatible with the separator layer, and in contact with the separator layer.

Assignees

• Polyplus Battery Co Inc

Inventors

• Visco Steven J
• Katz Bruce D
• Nimon Yevgeniy S
• De Jonghe Lutgard C

Classifications

• H01G11/58

  Liquid electrolytes · CPC title

• H01M10/36

  Accumulators not provided for in groups H01M10/05-H01M10/34 · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M4/13

  Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title

• H01M12/08

  composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type · CPC title