Abstract: A plated material containing a base material and a metal plating that covers the base material, the base material containing a main raw material free of any carbon materials, and a carbon material that is present inside the main raw material. A plating pretreatment method including a first step of preparing a base material from a main raw material free of any carbon materials and a carbon material, the base material containing the main raw material and the carbon material that is present inside the main raw material; and a second step of charging the base material into a treatment tank, and immersing the base material in a supercritical fluid or subcritical fluid containing an organometallic complex of palladium in the treatment tank.

Abstract: There are provided a conductive nonwoven fabric and a manufacturing method thereof, the conductive nonwoven fabric including: a plated felt portion including a felt portion formed of a plurality of first fibers that extend in irregular directions and that are stacked, and a metal plating applied to the first fibers of the felt portion; and at least one plated warp including a warp formed of a plurality of second fibers and the metal plating applied to the second fibers of the warp. The at least one plated warp is formed to extend in a specific direction with respect to the plated felt portion, and a density of the second fibers is higher than a density of the first fibers.

Abstract: A terminal plating material includes a metallic base that contains copper or a copper alloy, and a carbon composite silver plating layer that disposed on the metallic base and contains either silver or a silver alloy and carbon.