Ccl Label Gmbh

Ehsan Faegh

Chaojun Shi

Christine Chihfan Ho

Konstantin Tikhonov

Jesse Smithyman

Pavel Khokhlov

Albert Aumentado

Alex Gurr

Danny Hellebusch

Provided are printed electrochemical cells, which utilize zinc salts for ionic transfer, and methods of fabricating such cells. In some examples, a printed electrochemical cell comprises a positive electrode with a positive current collector having a two-dimensional shape and comprising an electrolyte-facing surface formed by the graphite. For example, the positive current collector may be a graphite foil or an aluminum foil with a graphite coating. The cell also comprises electrolyte comprising an electrolyte salt and an electrolyte solvent. For example, the electrolyte salt comprises a zinc salt with a concentration of at least 30% by weight in the electrolyte. The cell is fabricated by printing a positive active material layer over the positive current collector, printing one or more electrolyte layers on various cell components, and laminating a separator layer between the positive and negative electrodes while soaking the separator layer with the electrolyte.

Printed electrochemical cells with zinc salts and methods of fabricating thereof

Provided are electrochemical cells, comprising water-retaining components, and methods of fabricating such electrochemical cells. A water-retaining component is configured to deliver water to the positive active material during the operation of the electrochemical cell. The water-retaining component may be a part of the positive active material layer, a part of the electrolyte layer, and/or a standalone component. In some examples, the water-retaining component comprises one or more crystal hydrates (e.g., MgSO, MgCl, NaSO, NaHPO, CuSO, CaCl, KAl(SO), and Mg(NO)), one or more water-retaining polymers (e.g., sodium polyacrylate, potassium polyacrylate, ammonium polyacrylate, and a cellulose derivative), one or more inorganic compounds (e.g., fumed silica, precipitated silica). In some examples, a method of forming an electrochemical cell comprises printing a positive active material layer, a negative active material layer, and an electrolyte layer, e.g., printing the electrolyte layer directly over the positive active material layer or the negative active material layer.

Electrochemical cells comprising water-retaining components and methods of fabricating

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Alameda, CA, United States of America

Ehsan Faegh