MEMBRANE CATALYST LAYER JOINED BODY PRODUCTION METHOD, MEMBRANE CATALYST LAYER JOINED BODY PRODUCTION DEVICE, AND MEMBRANE CATALYST LAYER JOINED BODY

摘要

[Problem] To provide a membrane catalyst layer joined body production method capable of producing a membrane catalyst layer joined body having a catalyst layer of desired porosity. [Solution] The method comprises a step of adjusting the amount of solvent in a catalyst ink 140A while in drop form prior to being impacted onto an electrolyte membrane 110, thereby controlling the porosity of a catalyst ink layer 140B formed by the catalyst ink impacted on the electrolyte membrane.