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1. KR1020080042081 - THIN-FILM BATTERIES WITH SOFT AND HARD ELECTROLYTE LAYERS AND METHOD

Office Republic of Korea
Application Number 1020087003519
Application Date 13.02.2008
Publication Number 1020080042081
Publication Date 14.05.2008
Publication Kind A
IPC
(Deprecated)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
36
Accumulators not provided for in groups H01M10/05-H01M10/3492
40
with organic electrolytes
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
36
Accumulators not provided for in groups H01M10/05-H01M10/3492
H01M 10/40
H01M 10/36
CPC
H01M 10/056
H01B 1/122
H01M 2/0202
H01M 4/382
H01M 4/525
H01M 6/185
Applicants CYMBET CORPORATION
Inventors KLAASSEN JODY J.
Priority Data 2005 699895 17.07.2006 US
2006 458091 17.07.2006 US
Title
(EN) THIN-FILM BATTERIES WITH SOFT AND HARD ELECTROLYTE LAYERS AND METHOD
Abstract
(EN)
A method and apparatus for making thin-film batteries having composite multi-layered electrolytes with soft electrolyte between hard electrolyte covering the negative and/or positive electrode, and the resulting batteries. In some embodiments, foil-core cathode sheets each having a cathode material (e.g., LiCoO2) covered by a hard electrolyte on both sides, and foil-core anode sheets having an anode material (e.g., lithium metal) covered by a hard electrolyte on both sides, are laminated using a soft (e.g., polymer gel) electrolyte sandwiched between alternating cathode and anode sheets. A hard glass-like electrolyte layer obtains a smooth hard positive-electrode lithium-metal layer upon charging, but when very thin, have randomly spaced pinholes/defects. When the hard layers are formed on both the positive and negative electrodes, one electrode's dendrite-short-causing defects on are not aligned with the other electrode's defects. The soft electrolyte layer both conducts ions across the gap between hard electrolyte layers and fills pinholes. ┬ęKIPO&WIPO 2008