Pinnacle Research Institute, Inc.

Other

Pacific Shinfu Technologies Co., Ltd.

Mark L Goodwin

Robert R Tong

James M Poplett

Ronald L Anderson

James P Nelson

Gary E Mason

K C Tsai

Alan B McEwen

Douglas Cromack

Nazir Ahmad

Davy Wu

Charles W Tobias

Peter C Foller

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

The present invention relates to an improved method to produce an electrical storage device having useful characteristics such as higher charge density, small volume, long-term reliable charge/discharge cycles, low leakage current, and the like. The dry preunit has useful properties in that it can be stored for long periods prior to contact with a non-aqueous or aqueous electrolyte. When the electrode surfaces are contacted with a non-aqueous or aqueous electrolyte, the novel capacitors produced are useful as a portable power supply in applications such as in defibrillator, electrical vehicles, radiotelephones etc.

Method to fabricate a reliable electrical storage device and the device

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

The present invention relates to a photolithographic method to produce multiple, electrically insulating microprotrusions on an electrically conducting substrate to produce and maintain substantially uniform space separation between the substrates which act as electrodes in a double layer capacitor or battery configuration. Preferably, the electrically insulating microprotrusions are an organic photocurable epoxide polymer, a photocurable acrylic polymer or combinations thereof.

Photolithographic production of microprotrusions for use as a space

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 and its methods of manufacture

Electrodes of an electrical charge storage device are separated by forming on the surfaces of the electrodes arrays of substantially uniform electrically insulating microprotrusions made preferably of an organic epoxide polymer. The electrodes are thin, flat electrically conducting metal sheets coated on one or both flat surfaces with electrically conducting porous carbon or a porous metal oxide. The microprotrusions are applied to the coated electrodes through a stencil by screen printing and essentially retain their shape and dimensions after curing.

Screen printing of microprotrusions for use as a space separator in an

In electrolytic cells for producing ozone, the ozone current efficiencies can be enhanced by providing electrodes, and especially anodes, fabricated from glassy carbon. Cells including such glassy carbon electrodes are capable of producing ozone at very high current efficiencies utilizing aqueous electrolytes of highly electronegative fluoro-anions.

Growing community of inventors

Santa Cruz, CA, United States of America

Mark L Goodwin