Improved fuel cell properties of Nano-TiO2 doped Poly(Vinylidene fluoride) and phosphonated Poly(Vinyl alcohol) composite blend membranes for PEM fuel cells

Yağızatlı, Yavuz; Çalı, Aygün; Şahin, Alpay; Ar, İrfan

doi:10.1016/j.ijhydene.2020.02.197

Cited by 39 publications

(15 citation statements)

References 63 publications

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“…The characteristic bands at 1631 and 3417 cm −1 in Figure 2 a are due to the –OH bending and stretching vibration, respectively. STiO 2 shows two new bands at 1044 cm −1 and 1206 cm −1 , suggesting the successful grafting of sulfonic acid groups onto TiO 2 with a significant reduction in hydroxyl groups [ 44 ].…”

Section: Resultsmentioning

confidence: 99%

“…TiO 2 as inorganic fillers has been widely used in photo-catalysis, biosensors and solar cells due to its hydrophilic nature and ultraviolet resistance [ 39 , 40 , 41 , 42 , 43 ]. Earlier reported literature narrates that incorporating TiO 2 as an inorganic filler has a positive effect on the thermal and mechanical stabilities of the resultant membranes [ 44 , 45 ]. Slade et al reported that the addition of TiO 2 in Nafion 1100 membranes improved the mechanical stability and ion exchange capacity of the Nafion 1100 membranes [ 46 ].…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Characterization of a Novel Sulfonated Titanium Oxide Incorporated Chitosan Nanocomposite Membranes for Fuel Cell Application

et al. 2021

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In this study, nano-TiO2 sulfonated with 1,3-propane sultone (STiO2) was incorporated into the chitosan (CS) matrix for the preparation of CS/STiO2 nanocomposite membranes for fuel cell applications. The grafting of sulfonic acid (–SO3H) groups was confirmed by Fourier transform infrared spectroscopy, thermogravimetric analysis and energy-dispersive X-ray spectroscopy. The physicochemical properties of these prepared membranes, such as water uptake, swelling ratio, thermal and mechanical stability, ion exchange capacity and proton conductivity, were determined. The proton conducting groups on the surface of nano-TiO2 can form continuous proton conducting pathways along the CS/STiO2 interface and thus improve the proton conductivity of CS/STiO2 nanocomposite membranes. The CS/STiO2 nanocomposite membrane with 5 wt% of sulfonated TiO2 showed a proton conductivity (0.035 S·cm−1) equal to that of commercial Nafion 117 membrane (0.033 S·cm−1). The thermal and mechanical stability of the nanocomposite membranes were improved because the interfacial interaction between the -SO3H group of TiO2 and the –NH2 group of CS can restrict the mobility of CS chains to enhance the thermal and mechanical stability of the nanocomposite membranes. These CS/STiO2 nanocomposite membranes have promising applications in proton exchange membrane fuel cells.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of a Novel Sulfonated Titanium Oxide Incorporated Chitosan Nanocomposite Membranes for Fuel Cell Application

et al. 2021

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“…Several PVA‐based composite and nanocomposite PEMs, containing sulfonated polymers 66–68 and nanomaterials such as sulfonated CNT (sCNT), 69 sulfonated silica nanoparticles (nSiO 2 ), 70–73 sulfonated GO (SGO), 74 nano zinc oxide nanoparticles (nZnO 2 ), 75 TiO 2 nanoparticles (nTiO 2 ), 76 etc., have been reported. Figure 2 presents the proton conductivity and maximum power density values reported for various optimized PEMs based on PVA.…”

Section: Pva‐based Membranes For Fuel Cellsmentioning

confidence: 99%

“…This higher proton conductivity of the MOF‐containing PVA membrane has been attributed to the proton conduction via sulfonic acid groups (aided by Grotthuss mechanism), hydronium ion transportation by vehicle mechanism along the PVA channels containing water molecules, and proton transport within the membrane matrix via hydrogen bond created by ZIF nanomaterials 78 . Further, in the quest for high‐performance PEM, phosphonated PVA (PVA) has been prepared by esterification of PVA using phosphoric acid 76,80 . El‐Toony et al 80 prepared a nanocomposite PEM by casting a dope solution containing PPVA, poly(3‐hydroxybutyrate) (PHB), and phosphonated SiO 2 nanoparticles.…”

Section: Pva‐based Membranes For Fuel Cellsmentioning

confidence: 99%

Poly(vinyl alcohol)‐based membranes for fuel cell and water treatment applications: A review on recent advancements

Choudhury

Gohil

Dutta

2021

Polymers for Advanced Techs

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Clean water and energy are two of the most important requirements for human survival. Membrane‐based filtration represents one of the advanced technologies involved in water decontamination; while, polymer electrolyte membrane fuel cells (PEMFCs) are among the frontrunners in the alternative and renewable energy domain. It is evident that membrane‐based processes provide sustainable solution to the ever‐increasing demand of energy and clean water. Over the years, it has been realized that synthetic poly(vinyl alcohol) (PVA) is one of the potential candidates for the development of membranes, owing to its hydrophilicity, barrier property, film forming ability, crosslinking ability, biodegradability, and low cost. These properties have been widely explored for the fabrication of polymer electrolyte membranes for PEMFCs, in order to improve the ionic conductivity and methanol barrier property, as well as, to reduce the membrane fabrication cost. On the other hand, high water solubility and film forming characteristics of PVA have been used for the formation of water treatment membranes, for enhancing the antifouling property and chemical stability. This review provides in‐depth discussions and analyses on the structure and properties of various PVA‐based copolymers, and their applications as membrane materials for PEMFCs (including direct methanol and alkaline fuel cells) and water remediation.

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“…However, when the DS of a polymer increases, it becomes difficult to use in a PEMFC system because the mechanical strength of the membrane decreases under the operating conditions of a fuel cell due to swelling. Thus, to overcome the limitations of a membrane with a high DS, TiO 2 , SiO 2 , Fe 2 TiO 5 , ZrO 2 , and graphene oxide (GO) have been added to the polymer matrix [ 23 , 24 , 25 , 26 , 27 ]. Kumar et al fabricated a composite membrane by blending poly(vinylidene fluoride- co -hexafluoropropylene) and sulfonated TiO 2 with different degrees of sulfonation.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Physicochemical Properties and Single Cell Performance of Sulfonated Poly(arylene ether) (SPAE) Membrane by Incorporation of Phosphotungstic Acid and Graphene Oxide: A Potential Electrolyte for Proton Exchange Membrane Fuel Cells

et al. 2021

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The development of potential and novel proton exchange membranes (PEMs) is imperative for the further commercialization of PEM fuel cells (PEMFCs). In this work, phosphotungstic acid (PWA) and graphene oxide (GO) were integrated into sulfonated poly(arylene ether) (SPAE) through a solution casting approach to create a potential composite membrane for PEMFC applications. Thermal stability of membranes was observed using thermogravimetric analysis (TGA), and the SPAE/GO/PWA membranes exhibited high thermal stability compared to pristine SPAE membranes, owing to the interaction between SPAEK, GO, and PWA. By using a scanning electron microscope (SEM) and atomic force microscope (AFM), we observed that GO and PWA were evenly distributed throughout the SPAE matrix. The SPAE/GO/PWA composite membrane comprising 0.7 wt% GO and 36 wt% PWA exhibited a maximum proton conductivity of 186.3 mS cm−1 at 90 °C under 100% relative humidity (RH). As a result, SPAE/GO/PWA composite membrane exhibited 193.3 mW cm−2 of the maximum power density at 70 °C under 100% RH in PEMFCs.

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Improved fuel cell properties of Nano-TiO2 doped Poly(Vinylidene fluoride) and phosphonated Poly(Vinyl alcohol) composite blend membranes for PEM fuel cells

Cited by 39 publications

References 63 publications

Preparation and Characterization of a Novel Sulfonated Titanium Oxide Incorporated Chitosan Nanocomposite Membranes for Fuel Cell Application

Preparation and Characterization of a Novel Sulfonated Titanium Oxide Incorporated Chitosan Nanocomposite Membranes for Fuel Cell Application

Poly(vinyl alcohol)‐based membranes for fuel cell and water treatment applications: A review on recent advancements

Enhancing Physicochemical Properties and Single Cell Performance of Sulfonated Poly(arylene ether) (SPAE) Membrane by Incorporation of Phosphotungstic Acid and Graphene Oxide: A Potential Electrolyte for Proton Exchange Membrane Fuel Cells

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