Catalyst layer optimization by surface tension control during ink formulation of membrane electrode assemblies in proton exchange membrane fuel cell
| Autor: | Ricardo Cuenca, Marcelo Linardi, José Octavio Armani Paschoal, Rafael Nogueira Bonifácio |
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| Rok vydání: | 2011 |
| Předmět: |
Ink composition
Materials science Surface tension Renewable Energy Sustainability and the Environment Membrane electrode assembly Energy Engineering and Power Technology Proton exchange membrane fuel cell Nanotechnology Catalysis Membrane Chemical engineering Catalytic layer Electrode Deposition (phase transition) Sieve printing Electrical and Electronic Engineering Physical and Theoretical Chemistry Layer (electronics) |
| Zdroj: | Journal of Power Sources. 196:4680-4685 |
| ISSN: | 0378-7753 |
| Popis: | A cost effective production of the membrane electrode assemblies (MEA) is a crucial issue for the generation of electricity by proton exchange membrane fuel cells (PEMFC). The deposition of the exact catalyst content on the electrodes in a single printing step is desirable to save processing time and enable cost reduction. In this study, an innovative MEA production process by screen print is developed to produce high performance catalyst layers. The control of the surface tension of the catalyst ink is fundamental to allow the catalyst layer deposition in a single printing step. The electrodes prepared in this way show higher performance than those prepared in several steps. The optimal ink developed shows a viscosity of 2.75 Pa s, a total solid content of 33.76 wt.%, a density of 1.294 g cm−3, and tack value of 92 U.T. |
| Databáze: | OpenAIRE |
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