Registrado por

Cruz Argüello Julio Cesar

Tipo de artículo

Revistas indexadas

Título de artículo

Organic composite membrane for hydrogen electrochemical conversion devices

Volúmen

37

Número de registro

1879-3487

Campo

QUIMICA

Disciplina

QUIMICA ANALITICA

Subdisciplina

ANALISIS ELECTROQUIMICO

Resumen

In this research work a blend based on sulfonated poly (ether-ether ketone) (SPEEK) and chitosan was synthesized and characterized as ion-exchange membrane. The material was prepared at different ratio of chitosan: 1, 5 and 10% and characterized by several physicochemical and mechanical techniques. Also, water uptake, dimensional changes (swelling), ion exchange capacity (IEC) and proton conductivity ðsHþ Þ were evaluated. The best SPEEK|Chitosan membrane ratio (S-CS 10%, according with proton effective mobility) was tested in a proton exchange fuel cell (PEMFC) as activation method at 37.5 C, 100% RH, 3 bar (abs). Then, electrochemical hydrogen pumping (EHP) was tested, where 1796 mA cm2 of limit current density at 1 V, 37.5 C, 100% RH and 1 bar (abs) was measured by linear swept voltammetry at 50 mV s1, low hydrogen crossover (even one order of magnitude less than commercial Nafion® membrane) and was possible hydrogen pumping at 600 mA cm2 with 0.15 V for 1 h without any overheating caused by the applied current.

URL (DOI, ORCID, HANDLE, enlace)

Fuente

Sistema Estatal de Información y Documentación Científica y Tecnológica

Número de Visitas

6