3m Innovative Properties Company

Phat Tan Pham

Steven Joseph Hamrock

Matthew H Frey

William M Lamanna

Gregory M Haugen

James Michael Larson

Alan David Fanta

Thomas P Klun

Hiroshi Shimada

Michael J Bulinski

Jeffrey R Dahn

Mark N Obrovac

Leif Christensen

Dinh B Le

Robert B Loch

Lee Moshurchak

Steven D Boyd

Junwei Jiang

Ang Xiao

Richard L Wang

Bryan J Johnson

Matthew J Triemert

Lithium-ion electrochemical cells are provided that include a positive electrode that includes a lithium metal oxide or a lithium metal phosphate, a negative electrode capable of intercalating or alloying with lithium, and an electrolyte that includes an additive. The additive includes a multifunctional anion that has the formula, X&#x2014;SO&#x2014;R&#x2014;SO&#x2014;Y, wherein X and Y are, independently, either O&#x2014; or RSON&#x2014;, Ris a straight or branched fluoroalkyl moiety having from 1 to 6 carbon atoms, and can, optionally, contain one or more in-chain heteroatoms, wherein Ris a straight or branched chain or cyclic fluoroalkylene having from 1 to 10 carbon atoms and can, optionally, contain one or more in-chain heteroatoms, and wherein both Rand Rhave a maximum of 20% non-fluorine substituents. The provided additives can improve the performance, hydrolytic stability, and thermal stability of the provided electrochemical cells.

Lithium-ion electrochemical cells including fluorocarbon electrolyte additives

Fuel cell membrane electrode assemblies and fuel cell polymer electrolyte membranes are provided comprising bound anionic functional groups and polyvalent cations, such as Mn or Ru cations, which demonstrate increased durability. Methods of making same are also provided.

Casting solution and method for making a polymer electrolyte membrane

Provided are electrode compositions for lithium-ion electrochemical cells that include novel binders. The novel binders include lithium polysalts of carboxylic and sulfonic acids, lithium salts of copolymers of acids, lithium polysulfonate fluoropolymers, a cured phenolic resin, cured glucose, and combinations thereof.

Electrodes including novel binders and methods of making and using the same

The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and where the basic polymer is protonated by the acid and is stable to hydrolysis.

Fuel cell electrolyte membrane with basic polymer

Fuel cell membrane electrode assemblies and fuel cell polymer electrolyte membranes are provided comprising manganese oxides which demonstrate increased durability. Methods of making same are provided.

Durable fuel cell having polymer electrolyte membrane comprising manganese oxide

Overcharge protection is provided for rechargeable electrochemical lithium-ion cells. The electrolyte in the provided cells contains a cyclable redox shuttle molecule that can operate in cells with high voltage cathode materials.

Redox shuttles for high voltage cathodes

Method of making a fuel cell polymer electrolyte membrane comprising manganese oxide

Fuel cell membrane electrode assembly

An electrolyte membrane is formed by an acidic polymer and a low-volatility acid that is fluorinated, substantially free of basic groups, and is either oligomeric or non-polymeric.

Fuel cell electrolyte membrane with acidic polymer

An antistatic composition comprising (a) at least one polymeric salt consisting of (i) at least one polyoxyalkylene ammonium cation, and (ii) a fluorinated anion. The composition exhibits good antistatic characteristics.

Antistatic compositions

Compositions containing conductivity enhancers, which are capable of being coated onto a substrate by means of electrostatic assistance. The compositions comprise one or more cationically polymerizable monomer(s), one or more cationic initiator(s), and one or more non-volatile conductivity enhancer(s) having anionic and cationic portions which are soluble in the monomer(s) and which do not interfere with cationic polymerization wherein the anionic portion is a non-coordinating carbon-containing anion. The compositions may further comprise one or more dissociation enhancing agent(s), oligomer(s) or polymer(s), preferably co-reactive, free-radically curable monomer(s), free-radical generating initiator(s), leveling agents, and other additives or adjuvants to impart specific properties to the polymerized composition.

Cationically polymerizable compositions capable of being coated by electrostatic assistance

Novel sulfonylinide and sulfonylmethide compounds are described which are useful as conductive salts. Also described is the use of the above compounds in salt form in battery electrolytes, particular salts having mixed perfluorocaron and hydrocarbon groups or having all hydrocarbon groups. The above salts are less expensive to produce and still exhibit excellent conductivity and low corrosivity.

Sulfonylimide compounds

Amide and methide salts, comprising in the case of an amide salt one cyano (&mdash;CN) group, and in the case of a methide salt, two cyano groups are described in applications requiring a high degree of ionic dissociation. The salts are especially useful as electrolyte components in electrochemical cells such as batteries, fuel cells, capacitors, supercapacitors, electrochemical sensors and electrolytic cells, by providing a means for ionic conduction and transport.

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Little Canada, MN, United States of America

Phat Tan Pham