Elaboration and characterization of hybrid polymer electrolytes Nafion–TiO2 for PEMFCs

Hammami, Riadh; Ahamed, Z.; Charradi, Khaled; Beji, Z.; Assaker, I. Ben; Naceur, J. Ben; Auvity, Bruno; Squadrito, Gaetano; Chtourou, R.

doi:10.1016/j.ijhydene.2013.02.013

Cited by 29 publications

(18 citation statements)

References 31 publications

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“…This result shows that Fe 2 TiO 5 nanoparticles have better hydrophilicity properties compared with TiO 2 nanoparticles. The proton conductivity of PFT 4 nanocomposite membranes has an intense increase compared with Nafion nanocomposite membrane [33][34][35] and other PBI-based nanocomposite membrane [36][37][38][39][40][41]. Table 1 shows a comparison between the proton conductivity of PFT 4 nanocomposite membranes and the other works.…”

Section: Ft-ir Atr Spectramentioning

confidence: 98%

Novel nanocomposite membranes based on polybenzimidazole and Fe2TiO5 nanoparticles for proton exchange membrane fuel cells

Shabanikia

Javanbakht

Amoli

et al. 2015

Ionics

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In this work, Fe 2 TiO 5 nanoparticles were used for improving the proton conductivity, and water and acid uptake of polybenzimidazole (PBI)-based proton exchange membranes. The nanocomposite membranes have been prepared using different amounts of Fe 2 TiO 5 nanoparticles and dispersed into a PBI membrane with the solution-casting method. The prepared membranes were then physico-chemically and electrochemically characterized for use as electrolytes in hightemperature PEMFCs. The PBI/Fe 2 TiO 5 membranes (PFT) showed a higher acid uptake and proton conductivity compared with the pure PBI membranes. The highest acid uptake (156 %) and proton conductivity (78 mS/cm at 180°C) were observed for the PBI nanocomposite membranes containing 4 wt% of Fe 2 TiO 5 nanoparticles (PFT 4 ). The PFT 4 composite membrane showed 380 mW/cm 2 power density and 760 mA/ cm 2 current density in 0.5 V at 180°C at dry condition. The above results indicated that the PFT 4 nanocomposite membranes could be utilized as proton exchange membranes for high-temperature fuel cells.

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Section: Ft-ir Atr Spectramentioning

confidence: 98%

Novel nanocomposite membranes based on polybenzimidazole and Fe2TiO5 nanoparticles for proton exchange membrane fuel cells

Shabanikia

Javanbakht

Amoli

et al. 2015

Ionics

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“…One is to explore composite polymer materials for PEM . A wide range of nanofillers such as silica, active carbon, titanium dioxide (TiO 2 ), and phosphotungstic acid have been used in Nafion‐based composite PEM. Although the nanosized hydroscopic inorganic fillers can increase the water uptake of the membranes and even provide extra proton‐exchange sites, the intrinsic poor compatibility of inorganic fillers with polymer matrix usually decreases the mechanical stability of PEM and limits their applications .…”

Section: Introductionmentioning

confidence: 99%

Modification of hydrophilic channels in Nafion membranes by DMBA: Mechanism and effects on proton conductivity

Wang

Yan

et al. 2014

J Polym Sci B Polym Phys

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Modification of proton conductive channels (PCCs) in Nafion has been achieved with the assistance of 3, 4-dimethylbenzaldehyde (DMBA). During annealing, ionic clusters develop from small isolated spheres (1.72 nm) to wide continuous channels (5.15 nm), and the crystallinity of Nafion/ DMBA membranes is also improved from 17% to 32% as shown by X-ray diffraction. Molecular dynamic simulation reveals that hydrogen bonding and hydrophobic interaction between DMBA and Nafion work synergistically to achieve better phase separation. The morphology-property relationship shows that, versus various PCCs width, the corresponding proton conductivities vary greatly from 0.079 to 0.139 S/cm at 80 C. By carefully tuning the width of PCCs, the proton conductivity shows an improvement of 22-34% as compared with pristine Nafion. A significant enhancement on the maximum power density is achieved for the membrane electrode assembly on Nafion/DMBA-8h (as high as 1018 mW/cm 22), yielding an enhancement of 39% on pristine Nafion-8h (730 mW/cm 22 ).

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“…As a result of these experiments, the Nafion-modified composite membranes provided higher power density in comparison to the commercial Nafion 115 membrane. Regarding the application in a DMFC, Nafion/TiO 2 improved water uptake and reduced methanol absorbance [81] while Nafion/SiO2 showed lower methanol permeability than commercial membrane [82]. Moreover, Nafion membrane modified with both SiO 2 and TiO 2 were prepared by solvent casting method and studied by Ercelik et al [83] that investigated the effect of these particles on proton conductivity, water uptake and performance varying temperature.…”

Section: Inorganic Fillersmentioning

confidence: 99%

Composite Polymers Development and Application for Polymer Electrolyte Membrane Technologies—A Review

et al. 2020

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Nafion membranes are still the dominating material used in the polymer electrolyte membrane (PEM) technologies. They are widely used in several applications thanks to their excellent properties: high proton conductivity and high chemical stability in both oxidation and reduction environment. However, they have several technical challenges: reactants permeability, which results in reduced performance, dependence on water content to perform preventing the operation at higher temperatures or low humidity levels, and chemical degradation. This paper reviews novel composite membranes that have been developed for PEM applications, including direct methanol fuel cells (DMFCs), hydrogen PEM fuel cells (PEMFCs), and water electrolysers (PEMWEs), aiming at overcoming the drawbacks of the commercial Nafion membranes. It provides a broad overview of the Nafion-based membranes, with organic and inorganic fillers, and non-fluorinated membranes available in the literature for which various main properties (proton conductivity, crossover, maximum power density, and thermal stability) are reported. The studies on composite membranes demonstrate that they are suitable for PEM applications and can potentially compete with Nafion membranes in terms of performance and lifetime.

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Elaboration and characterization of hybrid polymer electrolytes Nafion–TiO2 for PEMFCs

Cited by 29 publications

References 31 publications

Novel nanocomposite membranes based on polybenzimidazole and Fe2TiO5 nanoparticles for proton exchange membrane fuel cells

Novel nanocomposite membranes based on polybenzimidazole and Fe2TiO5 nanoparticles for proton exchange membrane fuel cells

Modification of hydrophilic channels in Nafion membranes by DMBA: Mechanism and effects on proton conductivity

Composite Polymers Development and Application for Polymer Electrolyte Membrane Technologies—A Review

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