(CHARACTERIZATION OF ELECTROLYTE INERTIA ON MEMBRANE PSF-SPSF-TEOS BY MEANS PULSED CHRONOPOTENTIOMETRY)

• Main Author: Fajriah
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/34487
• Institution: Institut Teknologi Bandung

SPSF (Sulfonated Polysulfone) is one of proton exchange membrane which is developed to be applied in fuel cell membrane. In order to increase its conductivity, SPSF is blended with PSF and TEOS to be PSF-SPSF-TEOS membranes. Its conductivity relates to the ionic interaction between electrolyte and membrane. In this research, pulsed chronopotentiometry with stainless steel working electrodes and Ag/AgCl reference electrodes were used to conduct the characterization of ionic transport through electrolyte | membrane | electrolyte configurations. This property can be studied from ionic relaxation time which is presented in the potential decay profile against time. In this study, we focused on the following systems: 1) electrolyte without membrane (as blank system) 2) electrolyte | (PSF-SPSF-TEOS) | electrolyte, and 3) electrolyte | Nafion | electrolyte. Besides, this method was compared as well to standard methods; EIS measurement. Pulsed chronopotentiometry reveals that ionic mobility through membrane is affected by the low-frequency signal. Based on this result, time-domain pulsed chronopotentiometry is a potential characterization method to study the dynamics of ionic transport through the membrane.