Method for manufacturing electrode, electrode manufactured thereby, membrane-electrode assembly comprising same electrode, and fuel cell including same membrane-electrode assembly

An electrode comprising a catalyst and an ionomer, wherein the ionomer is coated to a thickness of 5 nm or less on the surface of the catalyst.

A method of manufacturing an ionomer-coated carbon structure comprising the steps of:

• preparing a mixture comprising a carbon structure and an ionomer;
• and
• applying a low-frequency acoustic energy to the mixture, thereby performing resonant vibratory mixing of the mixture to coat the ionomer on the surface of the carbon structure.

An ionomer-coated carbon structure comprising a carbon structure and an ionomer, wherein the ionomer is coated to a thickness of 5 nm or less on the surface of the carbon structure.