Hydrocarbon based ionomer for membrane-electrode assembly with high proton conductivity and durability and a membrane-electrode assembly including the same

A membrane-electrode assembly comprising:

• an electrolyte membrane;
• a first electrode disposed on a first surface of the electrolyte membrane;
• and
• a second electrode disposed on a second surface of the electrolyte membrane,
• wherein at least one of the electrolyte membrane, the first electrode and the second electrode comprises a hydrocarbon-based ionomer, and
• wherein the hydrocarbon-based ionomer comprises:
• a block copolymer that comprises one or more hydrophilic domains and one or more hydrophobic domains.

A fuel cell comprising:

• a membrane-electrode assembly that comprises:
• an electrolyte membrane;
• a first electrode disposed on a first surface of the electrolyte membrane;
• and
• a second electrode disposed on a second surface of the electrolyte membrane,
• wherein at least one of the electrolyte membrane, the first electrode and the second electrode comprises a hydrocarbon-based ionomer, and
• wherein the hydrocarbon-based ionomer comprises:
• a block copolymer that comprises one or more hydrophilic domains and one or more hydrophobic domains.

A water electrolysis device comprising:

• a membrane-electrode assembly that comprises:
• an electrolyte membrane;
• a first electrode disposed on a first surface of the electrolyte membrane;
• and
• a second electrode disposed on a second surface of the electrolyte membrane,
• wherein at least one of the electrolyte membrane, the first electrode and the second electrode comprises a hydrocarbon-based ionomer, and
• wherein the hydrocarbon-based ionomer comprises:
• a block copolymer that comprises one or more hydrophilic domains and one or more hydrophobic domains.