Influence of barium zirconate on SPEEK-based polymer electrolytes for PEM fuel cell applications

The sulfonated poly(ether ether ketone) (SPEEK)-barium zirconate (BaZrO 3 )-based polymer nanocomposite membranes are prepared by solvent casting technique. The composite membranes have been characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), nuclear magnetic re...

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Bibliographic Details
Published in:Ionics 2019-05, Vol.25 (5), p.2243-2253
Main Authors: Selvakumar, K., Rajendran, S., Ramesh Prabhu, M.
Format: Article
Language:English
Subjects:
Barium zirconates
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Electrochemistry
Electrolytes
Energy Storage
Fourier transforms
Fuel cells
Ion exchange
Maximum power
Membranes
Nanocomposites
NMR
Nuclear fuels
Nuclear magnetic resonance
Optical and Electronic Materials
Original Paper
Polymers
Proton exchange membrane fuel cells
Renewable and Green Energy
X-ray diffraction
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Summary:The sulfonated poly(ether ether ketone) (SPEEK)-barium zirconate (BaZrO 3 )-based polymer nanocomposite membranes are prepared by solvent casting technique. The composite membranes have been characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), water uptake, swelling, and ion exchange capacity (IEC). The NMR, IEC, and CHNSO analyses confirmed the degree of sulfonation level of SPEEK as 65%. Addition of 6 wt% BaZrO 3 filler improved the proton conductivity of the polymer electrolyte considerably with 3.12 × 10 −1  S/cm at 90 °C. SEM and AFM studies indicated that the BaZrO 3 nanofillers are well distributed in the polymer up to 8 wt%. The maximum power and current density are 183 mW cm −2 and 280 mA cm −2 for 94 wt% SPEEK and 06 wt% BaZrO 3 . It is concluded that the above composite membrane is a potential candidate for PEM fuel cell applications.
ISSN:0947-7047
1862-0760
DOI:10.1007/s11581-018-2613-4