Analyzing and Modeling of Water Transport Phenomena in Open-Cathode Polymer Electrolyte Membrane Fuel Cell
| Autor: | Seunghun Jung, Young-Bae Kim, Kai Ou, Wei-Wei Yuan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science water transport 1D model QH301-705.5 020209 energy Diffusion QC1-999 two-phase model Proton exchange membrane fuel cell 02 engineering and technology Electrolyte Conductivity PDE law.invention law water management 0202 electrical engineering electronic engineering information engineering General Materials Science Biology (General) Instrumentation QD1-999 Fluid Flow and Transfer Processes Water transport Process Chemistry and Technology Physics General Engineering 021001 nanoscience & nanotechnology Engineering (General). Civil engineering (General) Cathode Computer Science Applications Anode Chemistry Membrane Chemical engineering open cathode PEM fuel cell TA1-2040 0210 nano-technology |
| Zdroj: | Applied Sciences, Vol 11, Iss 5964, p 5964 (2021) Applied Sciences Volume 11 Issue 13 |
| ISSN: | 2076-3417 |
| Popis: | Water management is one issue that must be surpassed to ensure high membrane proton conductivity and adequate reactant transport in the membrane-electrode assembly (MEA) simultaneously. A well-designed water management system is based on a comprehensive understanding of water transport in the inner part of the polymer electrolyte membrane (PEM) fuel cell. In this work, the water transport phenomena in the MEA PEM fuel cell are analyzed by using a mathematical model. The transport of diluted species interface is used to model the transport of water in the ionomer phase in the catalytic layer and the membrane domains. The molecular flux of water is defined using Nernst–Planck equations, including migration and Fickian diffusion using parameters obtained experimentally for diffusivity and mobility based on water drag for a fully humidified membrane. The proposed model 1D model includes anode gas channel, cathode gas channel, anode gas diffusion layer (GDL), cathode GDL, anode catalyst layer, cathode catalyst layer, and proton exchange membrane. Water activity, ionomer conductivity, and output voltage are predicted by changing the humidity on the anode side of the fuel cell. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|