Navitas Systems, LLC

Robert Sosik

Pu Zhang

Michael R Wixom

Provided are electrodes that include an electrode dry mixture and a dry electrolyte material intermixed with the electrode dry mixture; and a binder intermixed with the electrode dry mixture and the dry electrolyte material, said binder comprising fibrils; the electrode dry mixture, dry electrolyte material, and said binder in the form of a dry electrode film. The electrolyte material may include a glass ceramic and, optionally, an air-stabilizing dopant. The glass ceramic may include LiPS. The electrodes may include a composite cathode of the dry electrode film and optionally further include a solid-state electrolyte layer. Also provided are methods for forming the electrodes, optionally where the methods may be applicable for a solvent-free process to form electrodes and electrochemical cells and batteries including the electrodes.

Dry process formation of solid state lithium ion cell

Methods for preparing an electrode may include compressing an electrode dry mixture comprising an active material and an electrolyte material to form an electrode film. An electrolyte dry mixture or a stand-alone solid-state electrolyte film is compressed against a surface of the electrode film to form a laminate of an electrolyte layer and the electrode film. The electrolyte dry mixture may include the electrolyte material. Compressing the electrode dry mixture may include calendering the electrode dry mixture. Compressing the electrolyte dry mixture or stand-alone electrolyte film may be accomplished also by calendering. The electrolyte material may include a glass ceramic and, optionally, an air-stabilizing dopant. The glass ceramic may include LiPS. Thus, the electrodes may include a composite cathode and a solid-state electrolyte layer. The methods may be applicable for a solvent-free process to form electrodes and electrochemical cells and batteries including the electrodes.

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Ann Arbor, MI, United States of America

Robert Sosik