Pbi Performance Products, Inc.

Celanese Ventures Gmbh

North Carolina State University

Barrie Davies

Gregory S Copeland

Bobby G Dawkins

William L Lawson, Iii

Shizuo Ogura

Makoto Murata

Hidehisa Mokudai

Saad A Khan

Peter S Fedkiw

Michael W Riley

A polybenzimidazole solution comprises a polybenzimidazole dissolved in an ionic liquid excluding 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium hydroxide, and 1-butyl-3-methylimidazolium tetrafluoroborate.

Polybenzimidazole solution in an ionic liquid

A polybenzimidazole solution comprises a polybenzimidazole dissolved in an ionic liquid excluding 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium hydroxide, and 1-butyl-3-methylimidazolium tetrafluoroborate. The ionic liquid may be a salt having a melting point less than or equal to 100&#xb0; C. The salt having a cation (+) and an anion (&#x2212;). The cation may be selected from the group consisting of: choline, ammoniums, phosphoniums, pyridiniums, pyrrolidiniums, morpholimiums, pyrazoliums, sulfoniums, imidazoliums. The anion may be selected from the group consisting of: halides, bis(triflyl)amide, CFSO, hydroxides, nitrates, sulfates, acetates, cyanates, aluminates, borates, phosphates, phosphorates, alkylsulfates, tosylates.

An electrode includes an electrically conductive matrix containing a disulfide group, wherein an S&#x2014;S bond of the disulfide group is cleaved by electrochemical reduction and reformed by electrochemical oxidation. A plurality of carbon nanotubes are substantially disentangled and dispersed in the electrically conductive matrix. The electrode can be used as a cathode of a lithium battery. A method for producing disentangled carbon nanotubes includes the steps of: adding a plurality of aggregates of carbon nanotubes to a liquid; and providing sheer force (e.g. passing the liquid through a narrow gap at a high speed) onto the liquid for disentangling the aggregates of carbon nanotubes therein.

Lithium battery and electrode

An electrode includes an electrically conductive matrix containing a disulfide group, wherein an S&mdash;S bond of the disulfide group is cleaved by electrochemical reduction and reformed by electrochemical oxidation. A plurality of carbon nanotubes is dispersed in the electrically conductive matrix. The electrode can be used as a cathode of a lithium battery.

A composite electrolyte comprises an inorganic clay material and a dielectric solution having a dielectric constant ranging from about 50 to about 85. The composite electrolyte has an ion transference number ranging from about 0.80 to about 1.00. An electrode comprises a component selected from the group consisting of an inorganic clay filler, a polymer, and mixtures thereof. Batteries and electrochemical cells comprising the above composite electrolytes and electrodes are also disclosed.

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Waxhaw, NC, United States of America

Barrie Davies