Pinnacle Research Institute, Inc.

Pacific Shinfu Technologies Co., Ltd.

Davy Wu

Robert R Tong

James M Poplett

Ronald L Anderson

James P Nelson

Nazir Ahmad

Mark L Goodwin

Gary E Mason

K C Tsai

Alan B McEwen

Douglas Cromack

A dry preunit ( ), includes a plurality of cells ( ) in a true bipolar configuration, which are stacked and bonded together, to impart to the device an integral and unitary construction. Each cell ( ) includes two electrically conductive electrodes ( A, B) that are spaced apart by a predetermined distance. The cell ( ) also includes two identical dielectric gaskets ( ) that are interposed, in registration with each other, between the electrodes ( A, B), for separating and electrically insulating these electrodes. When the electrodes ( A, B), and the gaskets ( ) are bonded together, at least one fill gap ( ) is formed for each cell. Each cell ( ) also includes a porous and conductive coating layer ( ) that is formed on one surface of each electrode. The coating layer ( ) includes a set of closely spaced-apart peripheral microprotrusions ( ), and a set of distally spaced-apart central microprotrusions ( ). These microprotrusions ( ) impart structural support to the cells, and provide additional insulation between the electrodes. An energy storage device ( A) such as a capacitor, is created with the addition of an electrolyte to the gap ( ) of the dry preunit ( ) and subsequent sealing of the fill ports.

Method of making energy storage device having electrodes coated with insulating microprotrusions

A dry preunit (10), includes a plurality of cells (110, 112, 114) in a true bipolar configuration, which are stacked and bonded together, to impart to the device an integral and unitary construction. Each cell (114) includes two electrically conductive electrodes (111A, 111B) that are spaced apart by a predetermined distance. The cell (114) also includes two identical dielectric gaskets (121, 123) that are interposed, in registration with each other, between the electrodes (111A, 111B), for separating and electrically insulating these electrodes. When the electrodes (111A, 111B), and the gaskets (121, 123) are bonded together, at least one fill gap (130) is formed for each cell. Each cell (114) also includes a porous and conductive coating layer (119, 120) that is formed on one surface of each electrode. The coating layer (119) includes a set of closely spaced-apart peripheral microprotrusions (125), and a set of distally spaced-apart central microprotrusions (127). These microprotrusions (125, 127) impart structural support to the cells, and provide additional insulation between the electrodes. An energy storage device (10A) such as a capacitor, is created with the addition of an electrolyte to the gap (130) of the dry preunit (10) and subsequent sealing of the fill ports.

Energy storage device

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Santa Clara, CA, United States of America

Davy Wu