A123 Systems LLC

Hollingsworth & Vose Company

Christopher Campion

Antoni S Gozdz

John A Wertz

Leslie J Pinnell

Randall B Keisler

Nicolas Clement

Yuri Vulfson

Jeong Ju Cho

Rene Gargan

The disclosure describes compositions and methods for producing a change in the voltage at which hydrogen gas is produced in a lead acid battery. The compositions and methods relate to producing a concentration of one or more metal ions in the lead acid battery electrolyte. The compositions include glass based compositions that are included as part of various battery components, such as the battery separator, pasting paper, additives to battery paste, etc.

Glass compositions with leachable metal oxides and ions

A rechargeable battery cell having a specific combination of anode, cathode and electrolyte formulation is provided. The electrolyte formulation includes an additive system and a salt system. The additive system includes a first additive containing a sulfonyl group, an anti-gassing agent, and a second additive. The salt system includes a lithium salt and a co-salt. The disclosed electrolyte formulation has reduced gassing and improved performance over a wide temperature range.

Electrolyte formulation for reduced gassing wide temperature range cycling

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Townsend, MA, United States of America

Christopher Campion