Abstract: An iron-air battery including an iron electrode in contact with an anode current collector, wherein the iron electrode includes a plurality of channels; an oxygen reduction reaction electrode having a first surface facing the plurality of channels and an opposing second surface in contact with air; an oxygen evolution reaction electrode interdigitated with the plurality of channels of the iron electrode, wherein at least a portion of the oxygen evolution reaction electrode is disposed within the plurality of channels in a direction perpendicular to a plane of the oxygen reduction reaction electrode; and an electrolyte in contact with the iron electrode, the first surface of the oxygen reduction reaction electrode, the plurality of channels, and the oxygen evolution reaction electrode.

Abstract: A system may include a first computing system that may include at least one processor. The at least one processor may receive a request for identification information associated with a user of the first computing device, such that the request is received from a second computing device. The at least one processor may then receive information regarding an entity associated with the second computing device, retrieve data comprising the identification information from a storage component, generate additional data comprising a portion of the identification information based on the information regarding the entity, and send the additional data to the second computing device.

Abstract: The disclosure relates to systems, methods and apparatus of storing, transporting, mixing, and injecting a drug as a solution, and in some embodiments, to a drug injection apparatus and system intended for use in mixing on demand a drug with a liquid, such as water, in a premeasured quantity and dosage, and injecting the drug mixture using an integrated hypodermic needle assembly. Also provided are methods of using such apparatus and systems.