[ manufacturing ]
CCM production diagram
Decal transfer technology : optimising fuel cell performance and minimising waste
As the demand for fuel cell efficiency increases , improving fuel cell performance becomes crucial for competing with alternative energy sources . This enhancement involves optimising both the design and materials used in fuel cell components , particularly in the membrane electrode assembly ( MEA ), while also reducing material waste .
By Frank Sonnenschein , Global Business Development Manager Hydrogen , Versiv Composites
What is decal transfer technology ?
Decal transfer technology is a manufacturing method employed to create the catalyst-coated membrane ( CCM ) found in fuel cells and electrolysers . The MEA comprises several layers , including a fluoropolymer electrolyte membrane situated between catalyst-coated electrodes ( anode and cathode ). The process consists of two main steps : 1 . Applying the catalyst : In this initial step , catalyst ink or paste is applied to a substrate film . For optimal results , the substrate must possess high surface energy to ensure proper wettability ; otherwise , the catalyst will form isolated droplets rather than spreading evenly .
2 . Transferring the catalyst layer : The second step involves adhering the crystalline catalyst layer to the substrate , which is then pressed onto the membrane . After pressing , the substrate is peeled away , aiming for complete transfer without residual material . Achieving this requires a low surface energy on the substrate for effective release , creating a
32 Hydrogen Tech World | Issue 18 | October 2024