Screen Printing Catalyst Inks With Enhanced Process Stability for PEM Fuel Cell Production

被引：2

作者：

Ney, Linda ^{[1
]}

Seidl, Nikolas ^{[1
]}

Singh, Rajveer ^{[1
]}

Schneider, Patrick ^{[1
]}

Stross, Dominik ^{[1
]}

Goeppentin, Andreas ^{[1
]}

Tepner, Sebastian ^{[1
]}

Klingele, Matthias ^{[2
]}

Keding, Roman ^{[1
]}

机构：

[1] Fraunhofer Inst Solar Energy Syst, Dept Fuel Cell, Freiburg, Germany

[2] Kempten Univ Appl Sci, Fac Mech Engn, Kempten, Germany

来源：

FUEL CELLS | 2025年 / 25卷 / 02期

关键词：

catalyst ink; PEM fuel cell; process stability; rheology; screen printing; UNDERSTANDING BINARY INTERACTIONS; IONOMER DISTRIBUTION; ORGANIC-SOLVENTS; LAYER STRUCTURE; DISPERSION; PERFORMANCE; ELECTRODES; FABRICATION; NAFION; RESISTANCE;

D O I：

10.1002/fuce.202400158

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Current state-of-the-art coating techniques for PEM fuel cell electrode manufacturing such as slot-die coating use closed ink reservoirs, allowing low boiling point solvents as the dispersion matrix for solid components of the catalyst ink. Applying such low boiling point inks to printing methods that expose catalyst inks to air, like flatbed screen printing, results in an instable and nonscalable production process due to the successive evaporation of these solvents. Within this study, a total of 12 different solvents are examined for process stability and electrochemical performance when applied with flatbed screen printing. Ink characteristics, such as contact angle, rheology, and sedimentation experiments, are quantified to reveal the most suitable set of solvents, enabling the use of open-reservoir printing methods like flatbed screen printing. Additionally, electrochemical in situ characterization of catalyst-coated membranes showed that 1,2-propanediol and 1-heptanol are solvents that combine process stability with high fuel cell performance.

引用

页数：15

共 82 条

[1] Effect of the solvent in the catalyst ink preparation on the properties and performance of unsupported PtRu catalyst layers in direct methanol fuel cells [J].