Method and device for modifying catalyst layer

A catalyst layer correction device for modifying a catalyst layer of a membrane catalyst layer assembly, which is manufactured by transferring the catalyst layer formed on a transfer sheet onto an electrolyte membrane, the catalyst layer correction device comprising:

• a detection unit that detects a presence or absence of a defect in the catalyst layer;
• a removal unit that removes the defect based on size and position of the defect detected by the detection unit;
• and
• a repair unit that repairs a portion from which the defect has been removed through application thereto of a correcting ink corresponding to the catalyst layer.
• the detection unit is configured to detect the presence or absence of the defect in the catalyst layer, which is formed after a catalyst ink that is coated on the transfer sheet has dried, and
• the repair unit is configured to repair the portion of the catalyst layer from which the defect has been removed by applying thereto the correcting ink, after the catalyst layer has been transferred onto the electrolyte membrane and the transfer sheet has been peeled off.

A catalyst layer correction catalyst layer correction device of a membrane catalyst layer assembly, which is manufactured by transferring the catalyst layer formed on a transfer sheet onto an electrolyte membrane, the catalyst layer correction device comprising:

• a detection unit that detects presence or absence of a defect in the catalyst layer,
• a removal unit that removes the defect based on size and position of the defect detected by the detection unit, and
• a repairing unit that repairs a portion from which the defect has been removed by the removal unit by applying a correcting ink corresponding to the catalyst layer thereon, wherein
• the repairing unit applies the correcting ink by an inkjet system.

A catalyst layer correction catalyst layer correction device of a membrane catalyst layer assembly, which is manufactured by transferring the catalyst layer formed on a transfer sheet onto an electrolyte membrane, the catalyst layer correction device comprising:

• a detection unit that detects presence or absence of a defect in the catalyst layer,
• a removal unit that removes the defect based on size and position of the defect detected by the detection unit, and
• a repairing unit that repairs a portion from which the defect has been removed by the removal unit by applying a correcting ink corresponding to the catalyst layer thereon,
• the removal unit including a laser that is configured to removes the defect by irradiating laser light on the defect.

A catalyst layer correction catalyst layer correction device of a membrane catalyst layer assembly, which is manufactured by transferring the catalyst layer formed on a transfer sheet onto an electrolyte membrane, the catalyst layer correction device comprising:

• a detection unit that detects presence or absence of a defect in the catalyst layer,
• a removal unit that removes the defect based on size and position of the defect detected by the detection unit, and
• a repairing unit that repairs a portion from which the defect has been removed by the removal unit by applying a correcting ink corresponding to the catalyst layer thereon,
• the removal unit removes the defect by applying a solvent onto the catalyst layer to dissolve the catalyst layer that is disposed around the defect.