Publicación

Tipo de publicación: Artículos científicos (Publicados en revistas de divulgación o científicas)

Título del artículo: Numerical study on enhanced electrochemical performance of hydrogen compressor electrodes by controlled phase alignment

Registrado por: Journal of Power Sources

Año de publicación: 2025

Resumen: The microstructure of an electrochemical hydrogen compressor electrode significantly influences transport properties and global electrochemical performance. This study employs the finite volume method to determine three effective transport coefficients (ETCs)—electronic (), protonic (), and hydrogen diffusivity —along with the effective platinum area (). Using Simulated Annealing Reconstruction, microstructures transition from an ordered bar-aligned state to a fully disordered configuration. Results show that ETCs decrease with disorder, while increases. Porosity enhances diffusion, ionomer content impacts ion diffusion and electronic conductivity, and primarily affects . A 10 % increase in porosity reduces by 24.15 %, while a 20 % increase in enhances by 259.46 %. A slight increase in alignment improves the power density (4.65–26.56 %) while balanced compositions (30 % porosity, 30–50 % Pt/C, 30–40 % ionomer) optimize electrochemical efficiency. These findings provide insights for optimizing EHC electrode performance under high current densities.

Editorial:

Número de páginas:

Autor(es): A. Navarro-Montejo a, C. Pacheco a, J. Ortegon b, Romeli Barbosa a

Campo:

Disciplina:

Subdisciplina:

Número de registro: A. Navarro-Montejo a, C. Pacheco a, J. Ortegon b, Romeli Barbosa a