3m Innovative Properties Company

3m Innovative Properties Counsel

Dahn, Jeffrey R.

Lee Moshurchak

William M Lamanna

Jeffrey R Dahn

Michael J Bulinski

Richard M Flynn

Michael G Costello

Jing Li

Yadong Wang

Richard L Wang

Phat Tan Pham

Claudia Buhrmester

Junwei Jiang

Phat T Pham

Provide are fluorinated cyclic and acyclic carbonate solvent compositions such as various fluorine substituted 1,3-dioxolane-2-one compounds and fluorine substituted 1,3-dioxane-2-one compounds, which are useful as electrolyte solvents for lithium ion batteries.

Fluorinated compounds for use in lithium battery electrolytes

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

Provided is a rechargeable lithium-ion cell that contains a positive electrode, a negative electrode, a charge-carrying electrolyte containing a charge carrying medium and a lithium salt, and a triphenylamine compound dissolved in or dissolvable in the electrolyte. The triphenylamine compound has an oxidation potential above the positive electrode recharged potential and serves as a cyclable redox chemical shuttle providing cell overcharge protection. Also provided are methods for manufacturing a rechargeable lithium-ion cell.

Rechargeable lithium-ion cell with triphenylamine redox shuttle

Growing community of inventors

Halifax, Canada

Lee Moshurchak