Abstract: Disclosed are an electrolyte membrane of a membrane-electrode assembly including an electronic insulation layer, which greatly improves the durability of the electrolyte membrane, and a method of preparing the same. The electrolyte membrane includes an ion exchange layer and an electronic insulation layer provided on the ion exchange layer, and the electronic insulation layer includes one or more catalyst complexes, and a second ionomer Particularly, each of the one or more catalyst complex includes a catalyst particle and a first ionomer coated on the entirety or a portion of the surface of the catalyst particle, and the one or more catalyst complexes are dispersed the second ionomer.

Abstract: A backboard fastening device for vehicle seats capable of preventing the movement of a backboard attached to the rear surface of a seat and the generation of rattle noise due to the movement of the backboard includes a clip framework and a compressible and elastically restorable fastening clip. The clip framework is formed at a clip mounting end of the backboard. A fastening clip, which is configured to exhibit elastic restoring force when compressed, is mounted to the clip framework, thereby improving assembly durability of the backboard to a seat back, easily restraining the generation of assembly tolerance and rattle noise, and easily achieving separation of the backboard for maintenance.

Abstract: A backboard fastening device for vehicle seats capable of preventing the movement of a backboard attached to the rear surface of a seat and the generation of rattle noise due to the movement of the backboard includes a clip framework and a compressible and elastically restorable fastening clip. The clip framework is formed at a clip mounting end of the backboard. A fastening clip, which is configured to exhibit elastic restoring force when compressed, is mounted to the clip framework, thereby improving assembly durability of the backboard to a seat back, easily restraining the generation of assembly tolerance and rattle noise, and easily achieving separation of the backboard for maintenance.