A novel polysulfone-based ternary nanocomposite membrane consisting of metal-organic framework and silica nanoparticles: As proton exchange membrane for polymer electrolyte fuel cells

Ahmadian‐Alam, Leila; Mahdavi, Hossein

doi:10.1016/j.renene.2018.03.075

Cited by 73 publications

(33 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a recent work by Ahmadian‐Alam and Mahdavi, Al‐based NH 2 ‐MIL‐53 in combination with sulfonated silica nanoparticles were used as fillers in the preparation of polysulfone‐based ternary nanocomposite membranes . In this study, NH 2 ‐MIL‐53 nanoparticles (with a diameter around 50 nm) were used to encapsulate imidazole and silica nanoparticles (with a size about 10 nm) with loadings of 3 and 5 wt% (both at equal weight) were homogeneously distributed in polysulfone matrix as observed in the membrane cross‐section scanning electron microscope (SEM) images.…”

Section: Mofs As Fillers In Mixed‐matrix Membranes For Pemfcmentioning

confidence: 93%

Proton Conductivity of Composite Polyelectrolyte Membranes with Metal‐Organic Frameworks for Fuel Cell Applications

Escorihuela

Narducci

Compañ

et al. 2018

Adv Materials Inter

146

View full text Add to dashboard Cite

The study of proton conductivity processes has gained intensive attention in the past decades due to their potential applications in chemical sensors, electrochemical devices, and energy generation. The scientific community has focused its efforts on the development of high‐performing polymeric membranes as proton exchange membranes (PEMs) for fuel cell (FC) applications. In particular, high conductivity at different humidity and temperature and enhanced chemical and mechanical stability under operative conditions are considered the main goals to be reached. The design of mixed‐matrix membranes (MMMs) based on conductive polymers and inorganic fillers is an approach commonly used for achieving materials with improved conductive and mechanical properties. In the last five years, the use of metal‐organic frameworks (MOFs) as fillers for conductive MMMs has rapidly grown for their intrinsic stability and structural versatility. The recent progress around the proton conductivity of MOF based composite membranes on PEMs for FC applications is critically reviewed.

show abstract

Section: Mofs As Fillers In Mixed‐matrix Membranes For Pemfcmentioning

confidence: 93%

Proton Conductivity of Composite Polyelectrolyte Membranes with Metal‐Organic Frameworks for Fuel Cell Applications

Escorihuela

Narducci

Compañ

et al. 2018

Adv Materials Inter

146

View full text Add to dashboard Cite

show abstract

“…[12][13][14][15] Metal-organic framework (MOFs) [16,17] is a novel coordination polymer as a type of self-assembled functional material, with high porosity, pore regulation and topological diversity, which have attracted much attention owing to their potential applications in heterogeneous catalysis, [18,19] separation, [20,21] sensing, [22][23][24] gas adsorption [25,26] and drug delivery. [27,28] Particularly, the luminescence properties of MOFs occupy an important role and offer huge potential in the detection of small molecules, cations, anions, and biomolecules, due to the high selectivity, high sensibility, more economical, short response time and visualization in recent years. [29][30][31][32] Based on the above considerations, the ligand 3,5bis-(3-carboxyphenoxy)benzoic acid (H 6 L) with high πelectron density was chosen as the organic linker.…”

Section: Introductionmentioning

confidence: 99%

A Recyclable bi‐functional Luminescent Zinc (II) metal–organic framework as highly selective and sensitive sensing probe for nitroaromatic explosives and Fe³⁺ ions

Gao

Xing

et al. 2019

Applied Organom Chemis

View full text Add to dashboard Cite

By introducing carboxyl tag to the aromatic ligands system and borrowing the organic template open framework idea, a stable fluorescent Zn metal–organic framework was successfully prepared through a rigid ligand H6L (3,5‐bis‐(3‐carboxyphenoxy)benzoic acid) under hydrothermal conditions. The selectivity and sensitivity of the Zn‐MOF to metal ions and nitro‐aromatic compounds (NACs) were investigated by fluorescence quenching. And the Zn‐MOF showed a high sensibility of nitro‐aromatic compounds (NACs) and Fe3+ ions, especially for 4‐(4‐nitropheny lazo) resorcinol (NPLR). More importantly, the detection limit of the Zn‐MOF for detecting NPLR solution was found to be 1.71 ppb. Moreover, this sensor is remarkable recyclable and is promisingly applied for rapid, on‐site and sensing of explosive residuals.

show abstract

“…In the first mechanism, the water or solvent molecules are the proton carriers. In high temperature and dry conditions, the Grotthuss mechanism is dominated, in which the migration happens via hopping . The schematic design of the Grotthuss and vehicular mechanisms is illustrated in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…In high temperature and dry conditions, the Grotthuss mechanism is dominated, in which the migration happens via hopping. 47,48 The schematic design of the Grotthuss and vehicular mechanisms is illustrated in Figure 5. The vehicular mechanism is augmented in the membrane through the hygroscopic nature of SZrTi nanoparticle.…”

Section: Proton Conductivitymentioning

confidence: 99%

Simultaneous improvement of ionic conductivity and oxidative stability of sulfonated poly(ether ether ketone) nanocomposite proton exchange membrane for fuel cell application

2020

View full text Add to dashboard Cite

Summary Simultaneous high proton conductivity with high oxidative stability is one of the major concerns in the proton exchange membrane (PEM) preparation. With this perspective, different loadings of the sulfated zirconia‐titania, a binary metal oxide that possesses enhanced physicochemical properties, nanoparticle in sulfonated poly(ether ether ketone) (SPEEK) polymer were evaluated by the response surface method to obtain the novel PEM with boosted proton conductivity and oxidative stability. Two models for correlation of proton conductivity and oxidative stability (in Fenton solution) with two independent factors, including sulfonation time and the weight percent of the nanoparticle loading, were obtained by central composite design. The optimum parameters to attain the highest proton conductivity with oxidative stability are found to be the sulfonation time of 6.48 hours and the nanoparticle weight percent of 10.12%. The nanoparticle loading was found to be the more significant factor in the proton conductivity model, while the sulfonation time in the oxidative stability model was the main affecting factor. The optimal membranes were characterized by 1H NMR, electrochemical impedance spectroscopy, Fenton test, Fourier transform infrared (FTIR), thermal gravimetric analysis (TGA), water uptake, swelling ratio, and atomic force microscopy (AFM) analysis. The results indicate that the introduction of the optimal contents of SZrTi nanoparticle into the polymer matrix would improve the water uptake and consequently the proton conductivity at a higher temperature while keeping the swelling ratio at an acceptable range. The highest achieved proton conductivity by the resulted nanocomposite was 29.21 mS cm−1 at 120°C with 186‐minute durability in the Fenton's reagent. Moreover, the maximum peak power density of 199 mW cm−2 was achieved at 90°C and 100% RH for the single‐cell performance test of nanocomposite‐based membrane electrode assembly (MEA), while it was recorded at 112 mW cm−2 for commercial MEA. Acceptable dispersion of SZrTi nanoparticle in the SPEEK matrix causes negligible fuel crossover flux (eg, 0.35 × 10−6 mmol s−1 cm−2 and 12.49 × 10−6 mmol s−1 cm−2 for nanocomposite‐based MEA and commercial MEA, respectively), which is indispensable to improve the mechanical and chemical stability. So, the novel prepared nanocomposite SPEEK‐based membrane would be a promising alternative for the Nafion membrane at moderate to high temperatures. Highlights Sulfated ZrO2‐TiO2 binary oxide was introduced into the SPEEK polymer matrix. Chemical stability and proton conductivity were promoted by design of experiments. The nanoparticle loading was the main factor in the proton conductivity model. Sulfonation time in the oxidative stability model was the most affecting factor. Fuel crossover was omitted because of the presence of SZrTi nanoparticle in the SPEEK matrix.

show abstract

A novel polysulfone-based ternary nanocomposite membrane consisting of metal-organic framework and silica nanoparticles: As proton exchange membrane for polymer electrolyte fuel cells

Cited by 73 publications

References 50 publications

Proton Conductivity of Composite Polyelectrolyte Membranes with Metal‐Organic Frameworks for Fuel Cell Applications

Proton Conductivity of Composite Polyelectrolyte Membranes with Metal‐Organic Frameworks for Fuel Cell Applications

A Recyclable bi‐functional Luminescent Zinc (II) metal–organic framework as highly selective and sensitive sensing probe for nitroaromatic explosives and Fe³⁺ ions

Simultaneous improvement of ionic conductivity and oxidative stability of sulfonated poly(ether ether ketone) nanocomposite proton exchange membrane for fuel cell application

Contact Info

Product

Resources

About

A novel polysulfone-based ternary nanocomposite membrane consisting of metal-organic framework and silica nanoparticles: As proton exchange membrane for polymer electrolyte fuel cells

Cited by 73 publications

References 50 publications

Proton Conductivity of Composite Polyelectrolyte Membranes with Metal‐Organic Frameworks for Fuel Cell Applications

Proton Conductivity of Composite Polyelectrolyte Membranes with Metal‐Organic Frameworks for Fuel Cell Applications

A Recyclable bi‐functional Luminescent Zinc (II) metal–organic framework as highly selective and sensitive sensing probe for nitroaromatic explosives and Fe3+ ions

Simultaneous improvement of ionic conductivity and oxidative stability of sulfonated poly(ether ether ketone) nanocomposite proton exchange membrane for fuel cell application

Contact Info

Product

Resources

About

A Recyclable bi‐functional Luminescent Zinc (II) metal–organic framework as highly selective and sensitive sensing probe for nitroaromatic explosives and Fe³⁺ ions