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Title: Development of composite membranes of PVA-TEOS doped KOH for alkaline membrane fuel cell

Anion exchange membranes (AEMs) play an important role in separating fuel and oxygen (or air) in the Alkaline Membrane Fuel Cells. Preparation of hybrid organic inorganic materials of Polyvinylalcohol (PVA) - Tetraethylorthosilicate (TEOS) composite membrane doped KOH for direct alcohol alkaline fuel cell application has been investigated. The sol-gel method has been used to prepare the composite membrane of PVA-TEOS through crosslinking step and catalyzed by concentrated of hydrochloric acid. The gel solution was cast on the membrane plastic plate to obtain membrane sheets. The dry membranes were then doped by immersing in various concentrations of KOH solutions for about 4 hours. Investigations of the cross-linking process and the presence of hydroxyl group were conducted by FTIR as shown for frequency at about 1600 cm{sup −1} and 3300 cm{sup −1} respectively. The degree of swelling in ethanol decreased as the KOH concentration for membrane soaking process increased. The ion exchange capacity (IEC) of the membrane was 0.25meq/g. This composite membranes display significant ionic conductivity of 3.23 x 10{sup −2} S/cm in deionized water at room temperature. In addition, the morphology observation by scanning electron microscope (SEM) of the membrane indicates that soaking process of membrane in KOH increased thermal resistant.
Authors:
; ;  [1]
  1. Department of Chemical Engineering, Politeknik Negeri Bandung Jl. Gegerkalong Hilir, Ds. Ciwaruga, Bandung West Java (Indonesia)
Publication Date:
OSTI Identifier:
22494472
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1699; Journal Issue: 1; Conference: International conference of chemical and material engineering (ICCME) 2015: Green technology for sustainable chemical products and processes, Semarang (Indonesia), 29-30 Sep 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AIR; CONCENTRATION RATIO; CROSS-LINKING; DOPED MATERIALS; ETHANOL; FOURIER TRANSFORM SPECTROMETERS; FUEL CELLS; HYDROCHLORIC ACID; INFRARED SPECTRA; ION EXCHANGE; IONIC CONDUCTIVITY; MEMBRANES; MORPHOLOGY; OXYGEN; PLASTICS; POTASSIUM HYDROXIDES; PVA; SCANNING ELECTRON MICROSCOPY; SOL-GEL PROCESS; TEMPERATURE RANGE 0273-0400 K