GAS-DIFFUSION ELECTRODE AND METHOD FOR MAKING THE SAME, AND, ELECTROCHEMICAL DEVICE AND METHOD FOR MAKING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a gas-diffusion electrode wherein the gas permeability is enhanced. SOLUTION: The gas-diffusion electrode of this invention comprises a carbon sheet with a catalyst layer formed on one of its surfaces, and with a plularity of through holes formed from a surface to the other surface. With these through holes, the gas permeability is enhanced, so that it is possible to improve significantly the energy efficiency of an electrochemical device which uses the gas- diffusion electrode.