W. R. Grace Co.-conn.

W. R. Grace Co.

Acme Electric Corporation

Menahem Anderman

Steven L Johnson

Joseph T Lundquist

David Zuckerbrod

Boris Tsenter

Michael C Saft

Joseph Theodore Lundquist

Steven Lloyd Johnson

A sealed rechargeable storage battery containing one or more rechargeable working cells and at least one regulator cell. The working cells are capable of generating gas in a gas space within the sealed battery during charging of the working cells. The regulator cell is in gaseous communication with the gas space, the regulator cell being chargeable and dischargeable by a control circuit to regulate the amount of gas in the gas space.

Sealed rechargeable battery

A polymer bonded sheet product suitable for use as an electrode in a non-aqueous battery system wherein the electrode is a microporous sheet composed of from 2-30 weigth percent polyethylene, 70-98 weight percent of electrically conductive and electrochemically active particulate material and from 0 to 5 weight percent of a plasticizer for the polyethylene.

Cathodic electrode

A polymer bonded sheet product suitable for use as a cathodic electrode in a non-aqueous battery system wherein the cathodic electrode is a microporous sheet composed of from 2-30 weight percent polyethylene, 70-98 weight percent of electrically conductive and electrochemically active particulate material and from 0 to 5 weight percent of a plasticizer for the polyethylene.

An improved carbon cathode and its use in a Li/SO.sub.2 battery wherein the cathode is formed from a microporous sheet having a substantially uniform mixture of from 7 to 22 volume percent of an ultra-high molecular weight polyethylene, from 78 to 93 volume percent of a conductive carbon black and from 0 to 2 volume percent of a plasticizer for the polyethylene. The microporous sheet has a void volume of at least 75 percent and exhibits electrical conductivity of at least 0.05 ohm.sup.-1 cm.sup.-1.

Carbon electrode

A polymer bonded sheet product suitable for use as a cathodic electrode in a non-aqueous battery system wherein the cathodic electrode is a microporous sheet composed of from 6-10 weight percent polyethylene having a molecular weight of 200,000 to 500,000, 90-94 weight percent of titanium disulfide particulate material and from 0 to 2 weight percent of a plasticizer for the polyethylene; the sheet having a void volume of from 15 to 25 percent.

A cathodic electrode product comprising a substantially unitary, microporous structure wherein each major surface of said structure is a composition of an inert filler in a polyolefin matrix, the inner core of said structure is a composition of from 70-98 weight percent of electrochemically active and electrically conductive particulate material, from 2-30 weight percent polyethylene and from 0 to 5 weight percent polyethylene plasticizer and a current collector in contact and extend from the inner core composition.

Growing community of inventors

Boyds, MD, United States of America

Menahem Anderman