Patent ID: 11862803
Assignee: nan
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC H

Claim 0:
1. A membrane-electrode assembly comprising:
a first electrode;
a second electrode;
an ion exchange membrane between the first and second electrodes; and
a radical scavenger in the first electrode, in the second electrode, in the ion exchange membrane, between the first electrode and the ion exchange membrane, and/or between the second electrode and the ion exchange membrane,
wherein the radical scavenger comprises:
a core particle capable of decomposing a peroxide or a radical, the core particle including cerium (Ce), cerium salt, cerium oxide, or a mixture of at least two thereof; and
a porous carbon coating layer located on a surface of the core particle, the porous carbon coating layer being a layer formed through a carbonization process to convert a carbon precursor into carbon,
wherein the porous carbon coating layer has a pore size of 3 to 5 Å and a thickness of 0.5 to 10 nm,
wherein the first electrode includes a first catalytic core particle for hydrogen oxidation reaction,
wherein the second electrode includes a second catalytic core particle for oxygen reduction reaction, and
wherein each of the first and second catalytic core particles is formed of any one selected from the group consisting of Pt, Pd, Ru, Ir, Os, a Pt alloy, a non-Pt alloy, and a combination of at least two thereof,
wherein the Pt alloy is any one selected from the group consisting of Pt—Pd, Pt—Sn, Pt—Mo, Pt—Cr, Pt—W, Pt—Ru, Pt—Ru—W, Pt—Ru—Mo, Pt—Ru—Rh—Ni, Pt—Ru—Sn—W, Pt—Co, Pt—Co—Ni, Pt—Co—Fe, Pt—Co—Ir, Pt—Co—S, Pt—Co—P, Pt—Fe, Pt—Fe—Ir, Pt—Fe—S, Pt—Fe—P, Pt—Au—Co, Pt—Au—Fe, Pt—Au—Ni, Pt—Ni, Pt—Ni—Ir, Pt—Cr—Ir, and a combination of at least two thereof, and
wherein the non-Pt alloy is any one selected from the group consisting of Ir—Fe, Ir—Ru, Ir—Os, Co—Fe, Co—Ru, Co—Os, Rh—Fe, Rh—Ru, Rh—Os, Ir—Ru—Fe, Ir—Ru—Os, Rh—Ru—Fe, Rh—Ru—Os, and a combination of at least two thereof.