PEMFC ELECTRODE MUD CRACK MITIGATION AT LOW PT LOADING

• Main Authors: KOESTNER, ROLAND J, KOZHINOVA, IRINA A, KUMARAGURU, SWAMINATHA P
• Format: Patent
• Language: Chinese; English
• Published: 14.09.2018
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; ELECTRICITY; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention relates to PEMFC electrode mud crack mitigation at low Pt loading. An electrode ink composition that forms a fuel cell catalyst layer with reduced mud cracking is provided. The ink composition includes a solvent, a platinum group metal-containing catalyst composition dispersed in the solvent, a primary polymer dispersed within the solvent, the primary polymer being an ionomer, and asecondary polymer dispersed within the solvent, the secondary polymer interacting with the primary polymer via a non-covalent interaction. 本发明涉及在低Pt负载量下减轻PEMFC电极龟裂。提供了种电极墨组合物，其形成龟裂减少的燃料电池催化剂层。所述墨组合物包括溶剂、分散于溶剂中的含铂族金属催化剂组合物、分散于溶剂中的主聚合物、以及分散于溶剂中的次聚合物，所述主聚合物为离聚物，所述次聚合物通过非共价相互作用与主聚合物相互作用。