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US 9,994,960 B2Granted
Ceramic/polymer matrix for electrode protection in electrochemical cells, including rechargeable lithium batteries
AssigneeSion Power Corporation
InventorsMichael G. Laramie, Yuriy V. Mikhaylik, James A. Phipps, Veronika G. Viner
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Abstract
Articles and methods for forming ceramic/polymer composite structures for electrode protection in electrochemical cells, including rechargeable lithium batteries, are presented.
Claims29
An electrode for an electrochemical cell, comprising:
- a base layer comprising an active electrode species;
- and
- a protective structure positioned to protect the electrode from an electrolyte when the electrode is arranged in an electrochemical cell, the protective structure having a first side facing the active electrode species, and a second side arranged to face an electrolyte, wherein the protective structure comprises:
- at least a first and second composite layer, each layer comprising:
- a polymer matrix having a patterned array of cavities;
- and
- a ceramic material filling at least two cavities of the patterned array;
- wherein the cavities of the patterned array are distanced at predetermined intervals from one another, wherein each ceramic-filled cavity is in ionic communication with the base layer, wherein the protective structure has an average ionic conductivity of at least 10−7 S/cm, wherein the protective structure is configured to inhibit passage of a component of the electrolyte that can adversely affect the electrode.
5 more elements
An electrode for an electrochemical cell, comprising:
- a base layer comprising an active electrode species;
- and
- a protective structure including at least a first composite layer comprising a patterned array of cavities within a matrix, wherein a polymer or a ceramic material forms the matrix, and the other of the polymer or ceramic material fills at least a portion of the cavities,
- wherein the cavities of the patterned array are distanced at predetermined intervals from one another, and wherein the protective structure has an average ionic conductivity of at least 10−7 S/cm.
1 more element
A method of fabricating a protected electrode, the method comprising:
- forming a base layer comprising an active electrode species attached to a protective structure, wherein the protective structure is formed by:
- positioning on a substrate at least one layer of a matrix comprising a polymer or a ceramic material, the matrix comprising a patterned array of cavities;
- filling at least a portion of the cavities with the other of the polymer or the ceramic material to form a composite layer,
- wherein the cavities of the patterned array are distanced at predetermined intervals from one another, and wherein the composite layer has an average ionic conductivity of at least 10−7 S/cm.
1 more element
Dependencies are inferred from the claim text.