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 portable self erecting pet enclosure which provides protection to domesticated animals when the animals are introduced into hostile or new environments. The pet enclosure design has a support system and a nylon webbing cover. The support system is constructed of two concentric flat spring wire loops each having substantially the same diameter. The support system has a foundational bottom loop and a supporting frame loop. The foundational bottom loop defines the outer perimeter of the floor and the supporting frame loop is arranged in a saddleback configuration to support the roof. The supports are contained within support sleeves which are sewn onto the nylon webbing. The pet enclosure apparatus has a small insertion port and a large extraction port. The small insertion port is for easily inserting the animal into the enclosure. The large extraction port is designed so that the pet owner can easily remove the animal.

Abstract: A portable self erecting pet enclosure which provides protection to domesticated animals when the animals are introduced into hostile or new environments. The pet enclosure design has a support system and a nylon webbing cover. The support system is constructed of two concentric flat spring wire loops each having substantially the same diameter. The support system has a foundational bottom loop and a supporting frame loop. The foundational bottom loop defines the outer perimeter of the floor and the supporting frame loop is arranged in a saddleback configuration to support the roof. The supports are contained within support sleeves which are sewn onto the nylon webbing. The pet enclosure apparatus has a small insertion port and a large extraction port. The small insertion port is for easily inserting the animal into the enclosure. The large extraction port is designed so that the pet owner can easily remove the animal.