Abstract: A composition is provided having at least one binder, and a fiber substrate. The fiber substrate has organic fibers and metallic fibers, the amount of metallic fibers being superior or equal to the amount of organic fibers. The composition further has at least one oxide compound (A) selected among at least one silicate compound (A1), at least one phosphate compound (A2), and any mixture thereof.

Abstract: A composition is provided having at least one binder, and a fiber substrate. The fiber substrate has organic fibers and metallic fibers, the amount of metallic fibers being superior or equal to the amount of organic fibers. The composition further has at least one oxide compound (A) selected among at least one silicate compound (A1), at least one phosphate compound (A2), and any mixture thereof.

Abstract: A method of forming an air electrode of a metal-air battery includes forming at least a portion of the air electrode using a process selected from the group consisting of screen printing, spray printing, spin coating, and dip coating.

Abstract: A method of forming an air electrode of a metal-air battery includes forming a plurality of layers of the air electrode. The plurality of layers include an active layer and a gas diffusion layer. Forming the active layer includes forming a plurality of blank portions in a sublayer of the active layer for venting gases to the gas diffusion layer.

Abstract: Methods of forming an air electrode of a metal-air battery are provided. One method includes forming a plurality of layers of the air electrode. The plurality of layers include an active layer and a gas diffusion layer. Forming at least one of the active layer or the gas diffusion layer includes forming a first sublayer having a first concentration of a first material and forming a second sublayer having at least one of a second concentration of the first material that differs from the first concentration or a second material that differs from the first material. In another embodiment, a method includes forming a layer of an air electrode such that a gradient of a material is formed in at least a portion of the layer by varying a concentration of the material deposited between a first portion of the layer and a second portion of the layer.