University of Michigan

Empa

Jeff Sakamoto

Michael Wang

Marie-Claude Bay

Corsin Battaglia

Disclosed are electrochemical devices, such as sodium ion conducting solid state electrolytes, sodium battery electrodes, and solid-state sodium metal batteries including these electrodes and solid state electrolytes. One example method for preparing a sodium/sodium-&#x3b2;&#x2033;-alumina interface with low interfacial resistance and capable of achieving high current density in an electrochemical cell includes the steps of: (a) providing a precursor electrolyte having a resistive surface region, wherein the precursor electrolyte comprises sodium-&#x3b2;&#x2033;-alumina; (b) removing at least a portion of the resistive surface region; (c) heating the precursor electrolyte thereby forming a solid state electrolyte, and (d) placing a side of the solid state electrolyte in contact with a sodium anode.

Growing community of inventors

Ann Arbor, MI, United States of America

Jeff Sakamoto