Abstract:
An electrode catalyst for a fuel cell including porous catalyst particles including a noble metal having oxygen-reduction activity and a carbonaceous support, wherein the porous catalyst particles are disposed on the carbonaceous support, and an electrochemical specific surface area of the porous catalyst particles is about 70 m2/g or more.
Abstract:
A method for removing organic materials includes providing a target object having the organic materials adsorbed thereon, and an adsorbent, into a space including a non-liquid medium therein; and separating the organic materials from the target object by applying ultrasound waves to the target object having the organic materials adsorbed thereon and the adsorbent in the space, and disposing the organic materials to the adsorbent.
Abstract:
A composite including: a carbonaceous material; and a solid solution including a first metal and a cerium oxide, wherein the solid solution is disposed on the carbonaceous material.
Abstract:
A fuel cell electrode catalyst including an active complex including a cerium (Ce)-nitrogen (N) bond and having an oxygen reduction activity of at least 1 milliampere per square centimeter at 0.5 volts versus a reversible hydrogen electrode.
Abstract:
An electrode catalyst for a fuel cell, wherein the electrode catalyst includes an active particle including: a core including an alloy represented by Formula 1 PdCuaMb Formula 1 wherein M is a transition metal, 0.05≦a≦0.32, and 0