Sulfonated polyether ether ketone – sulfonated graphene oxide composite membranes for polymer electrolyte fuel cells

Kumar, Ravi; Mamlouk, Mohamed; Scott, Keith

doi:10.1039/c3ra42390e

Cited by 131 publications

(71 citation statements)

References 14 publications

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“…The peak assignments are consistent with the values reported in literature. 38,47 The results clearly indicate the formation of hydrogen bonds between the sulfonated acid groups in SPEEK and polar groups (-OH, -COOH) on GO, which may be benecial for the improvement of mechanical stability.…”

Section: Fourier Transform Infrared Spectramentioning

confidence: 94%

SPEEK/Graphene oxide nanocomposite membranes with superior cyclability for highly efficient vanadium redox flow battery

et al. 2014

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A series of novel composite membranes, based on sulfonated poly(ether ether ketone) (SPEEK) with various graphene oxide (GO) loadings, were employed and investigated in vanadium redox flow battery (VRFB) for the first time. The scanning electron microscopy images of the composite membranes revealed the uniform dispersion of GO nanosheets in the polymer matrix due to the interaction between GO and SPEEK, as confirmed by Fourier transform infrared spectra. The mechanical and thermal parameters of the composite membranes increased, while the VO 2+ permeability decreased with increasing GO content.Random embedding of GO nanosheets in the membranes can serve as effective barriers to block the transport of vanadium ion, resulting in a significant decrease of vanadium ion permeability. The VRFB assembled with the composite membrane exhibited highly improved cell parameters and strikingly long cycling stability compared with commercial Nafion 117 membrane. With the protection of porous PTFE substrate, the pore-filling SPEEK/GO composite membrane based on VRFB ran for 1200 cycles with relatively low capacity decline.

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Section: Fourier Transform Infrared Spectramentioning

confidence: 94%

SPEEK/Graphene oxide nanocomposite membranes with superior cyclability for highly efficient vanadium redox flow battery

et al. 2014

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“…24,25 The proton conductivity of the SPEEK/PVDF-g-PSSA membranes at room temperature ranges from 6.54 × 10 -2 to 1.19 × 10 -1 S cm -1 (Fig. 26 The introduction of 5 wt. Notably, unlike other blend membranes which usually exhibit decreased proton conductivity by the incorporation of low IEC component, the SPEEK/PVDF-g-PSSA membrane exhibits enhanced proton conductivity at the PVDF-g-PSSA content of 5 wt.…”

Section: Water Uptake Dimensional Change Proton Conductivity Methamentioning

confidence: 99%

Microstructure and properties of novel SPEEK/PVDF-g-PSSA blends for proton exchange membrane with improved compatibility

Liu

Meng

et al. 2015

RSC Adv.

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Novel blend membranes of poly(vinylidene fluoride) grafted poly(styrene sulfonic acid) (PVDF-g-PSSA) with sulfonated poly(ether ether ketone) (SPEEK) were fabricated for direct methanol fuel cell applications. The PVDF-g-PSSA copolymer can be homogeneously dispersed in SPEEK matrix with a unique hierarchical particle surface. All the SPEEK/PVDFg-PSSA blend membranes exhibit better dimensional stability, lower methanol permeability , higher selectivity than commercial Nafion ® 117 at room temperature. Notably, at the PVDF-g-PSSA content of 5 wt. %, the blend membrane exhibits the best overall membrane performance, which is supposed to benefit from the improved compatibility and strong interactions between the PVDF-g-PSSA and SPEEK matrix. The thermal stability and the temperature dependence of water uptake, dimensional change and proton conductivity of the blend membranes are also investigated. This study provides a promising strategy for the design and fabrication of high performance polymer electrolyte membrane by rational control of microstructure and compatibility of the blend membrane.This journal is

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“…The uniform distribution of GO within the polymer structure were confirmed by SEM, and functionalization between SGO and SPEEK was revealed by FTIR analysis. The composite membrane showed excellent proton conductivity (0.055 S cm −1 )and fuel cell performance measured at 80 °C and 30 % RH, compared with that of recast SPEEK [56].…”

Section: Membranes In Fuel Cellsmentioning

confidence: 92%

“…The decrease in proton conductivity above 80 °C hinders the use of Nafion for large scale applications. Alternatives to Nafion membrane aromatic polymers, such as PEEK, PBI, and PSF, have received significant attention to meet the operating requirements for fuel cell applications [56] GO nanosheets have also been investigated as contributors to escalate the proton conductivity and methanol crossover resistance of these binary and ternary systems.…”

Section: Membranes In Fuel Cellsmentioning

confidence: 99%

Graphene Polymer Nanocomposites for Fuel Cells

Zhu

Liu

Mahmood

et al. 2015

Graphene-Based Polymer Nanocomposites in Electronics

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Fuel cells have long been considered as highly efficient devices for energy conversion which transform chemical energy directly into electricity, without any venomous pollutants emitted into ambient environment. In recent years, graphene-polymer nanocomposites have attracted intense interest as functional components in fuel cells. This chapter focuses on the potential applications of graphene-polymer composites in fuel cells. Recent advancement in the synthesis of graphene, polymer, graphene-polymer composites will be presented. Then, latest explorations of graphene-polymer composites applied as membranes, anode and cathode materials will be summarized. Furthermore, the vital roles of graphene-polymer to support noble metal catalysts will be illustrated. Finally, prospects of graphene-polymer composites for fuel cells will be outlined for further development.

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Sulfonated polyether ether ketone – sulfonated graphene oxide composite membranes for polymer electrolyte fuel cells

Cited by 131 publications

References 14 publications

SPEEK/Graphene oxide nanocomposite membranes with superior cyclability for highly efficient vanadium redox flow battery

SPEEK/Graphene oxide nanocomposite membranes with superior cyclability for highly efficient vanadium redox flow battery

Microstructure and properties of novel SPEEK/PVDF-g-PSSA blends for proton exchange membrane with improved compatibility

Graphene Polymer Nanocomposites for Fuel Cells

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