Motorola Corporation

Florence O Eschbach

Manuel Oliver

Shekhar L Pendalwar

Paul J Gies

Christen E Coalson

Ganesh Venugopal

Veronica R Reichert

Changming Li

Jose M Fernandez

Ke Keryn Lian

An electrochemical cell is provided with a first and second electrodes, and a solid polymer electrolyte disposed therebetween. The electrodes may either be of the same or different materials and may be fabricated from ruthenium, iridium, cobalt, tungsten, vanadium, iron, molybdenum, nickel, silver, zinc, and combinations thereof. The solid polymer electrolyte is in intimate contact with both the anode and the cathode, and is made from a polymeric support structure having dispersed therein an electrolyte active species. The polymer support structure is preferably a polybenzimidazole.

Electrochemical cell having a polymer electrolyte

An electrochemical cell 10 includes first and second electrodes 12 and 14 with an electrolyte system 26 disposed therebetween. The electrolyte system includes at least a first and second layer 28 and 30, the second layer 30 being used to absorb an electrolyte active species and to adhere the adjacent layer of electrode material to the electrolyte 26. The electrolyte system further includes a process for packaging and curing the electrolyte after it has been incorporated into a discrete battery device.

Method of making a gel electrolyte bonded rechargeable electrochemical

An electrochemical cell 10 includes first and second electrodes 12 and 14 with an electrolyte system 26 disposed therebetween. The electrolyte system includes at least a first and second layer 28 and 30, the second layer 30 being used to absorb an electrolyte active species and to adhere the adjacent layer of electrode material to the electrolyte system 26. The electrolyte system further includes a process for packaging and curing the electrolyte after it has been incorporated into a discrete battery device.

Gel electrolyte bonded rechargeable electrochemical cell and method of

An electrolyte system (40) for use in connection with an electrochemical cell (10). The cell (10) includes a positive electrode (20) and a negative electrode (30) with the electrolyte system (40) disposed therebetween. The electrolyte system is a polymer gel electrolyte system including a liquid electrolyte species which may be either aqueous or non-aqueous and a polymer gel electrolyte support structure. The polymer gel electrolyte support structure includes at least an non woven first polymer and a second polymer which is adapted to absorb the electrolyte active species. The first polymer is a fibrous polymer to reduce swelling of the gel electrolyte in the presence of the electrolyte active species, and further to enhance mechanical integrity of the support structure.

Non woven gel electrolyte for electrochemical cells

An electrolyte system (40) for use in connection with an electrochemical cell (10). The cell (10) includes a positive electrode (20) and a negative electrode (30) with the electrolyte system (40) disposed therebetween. The electrolyte system is a polymer gel electrolyte system including an electrolyte active species which may be either aqueous or non-aqueous and a polymer gel electrolyte support structure. The blended polymer gel electrolyte support structure includes at least a first phase adapted to absorb or otherwise engage the electrolyte active species disposed on and through the pores of a second phase which is substantially inert and does not absorb the electrolyte active species.

Polymer gel electrolyte

A thermal sensing polymeric device (110) such as a capacitor is fabricated from a layer of a copolymeric material (112) including polyvinylidene fluoride and a fluorinated ethylene. The fluorinated ethylene may be selected from the group including trifluoroethylene and tetrafluoroethylene. The thermal sensing polymeric device may be a capacitor fabricated of polyvinylidene fluoride-trifluoroethylene copolymeric material. In such an application, the capacitor device exhibits a change in capacitance as the temperature to which the device is exposed is changed. Specifically, as the temperature of the polymeric material crosses a threshold transition temperature, a substantial change in its capacitance is observed.

Thermal sensing polymeric capacitor

An electrochemical cell (10) includes first and second electrodes (12) and (14) with an electrolyte system (26) disposed therebetween. The electrolyte system includes at least a filler material and a gelling polymer. The filler material comprises at least about 50 vol. % of the total amount of polymer in the electrolyte system, and has a porosity on the order of about 20-80%.

Highly filled solid polymer electrolyte

An electrolyte system (40) for use in connection with an electrochemical cell (10). The cell (10) includes a positive (20) and a negative (30) electrode, and an electrolyte system (40) disposed therebetween. The electrolyte system includes a polymer matrix fabricated of a polyacrylic acid or polyacrylic acid derivative polymeric material. The polymer material is adapted to engage in electroactive species. Examples of electroactive species may be either an acid or a base electrolyte, such as KOH or H.sub.2 SO.sub.4.

Polymer electrolytes and electrochemical cells using same

A gradient interpenetrating polymer network electrolyte for rechargeable electrochemical cell, and a rechargeable electrochemical cell including said electrolyte. The interpenetrating polymer network electrolyte consists of a first polymeric material having a first set of electrochemical and morphological characteristics, and a second polymeric material having a second set of electrochemical and morphological characteristics. A rechargeable electrochemical cell is made by disposing the interpenetrating polymer network electrolyte between a positive and a negative electrode.

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Duluth, GA, United States of America

Florence O Eschbach