Infiltration of 40SiO2−40P2O5−20ZrO2 sol-gel in sSEBS membranes for PEMFCs application

Escribano, P. G.; Río, Carmen del; Morales, E.; Aparicio, Mario; Mosa, Jadra

doi:10.1016/j.memsci.2018.01.044

Cited by 10 publications

(15 citation statements)

References 41 publications

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“…In a previous work [60], economic hybrid membranes (organic-inorganic) were developed by sol-gel chemistry and direct infiltration of a novel zirconia modified phosphosilicate gel (40SiO…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the aim of this work is to investigate this hybrid membrane preparation anew in order to reduce the methanol crossover with respect to pristine sSEBS and Nafion, thereby improving DMFC performance. In this case, infiltration times up to 40 min are implemented according the results previously reported [60]. A complete physicochemical characterization of the membranes is carried out to explain their behavior in DMFCs.…”

Section: Introductionmentioning

confidence: 99%

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40SiO2–40P2O5–20ZrO2 sol-gel infiltrated sSEBS membranes with improved methanol crossover and cell performance for direct methanol fuel cell applications

Santiago

Mosa

Escribano

et al. 2020

International Journal of Hydrogen Energy

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40P 2 O 5 -20ZrO 2 sol-gel infiltrated sSEBS membranes with improved methanol crossover and cell performance for direct methanol fuel cell applications Abstract Membranes commonly used in direct methanol fuel cell (DMFC) are expensive and show a great permeability to methanol which reduces fuel utilization and leads to mixed potential at the cathode.In this work, sulfonated styrene-ethylene-butylene-styrene (sSEBS) modified membranes with zirconia silica phosphate sol-gel phase are developed and studied in order to evaluate their potential use in DMFC applications. The synthesized hybrid membranes and sSEBS are subjected to an exhaustive physicochemical characterization by liquid uptake, ion exchange capacity, atomic force microscopy, X-ray photoelectron spectroscopy and dynamic mechanical and thermogravimetric analyses. Likewise, the potential use of the prepared membranes in DMFC is evaluated by means of electrochemical characterizations in single cell, determining the limiting methanol crossover current densities, proton conductivities and DMFC performances. The hybrid membranes show lower water and methanol uptakes, higher stiffness, water retention capability, upper power density and lower methanol crossover than sSEBS and Nafion 112.

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“…In a previous work [60], economic hybrid membranes (organic-inorganic) were developed by sol-gel chemistry and direct infiltration of a novel zirconia modified phosphosilicate gel (40SiO…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

40SiO2–40P2O5–20ZrO2 sol-gel infiltrated sSEBS membranes with improved methanol crossover and cell performance for direct methanol fuel cell applications

Santiago

Mosa

Escribano

et al. 2020

International Journal of Hydrogen Energy

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“…The sol-gel method has been used in some proton exchange membrane fuel cell applications. An example is when 40SiO 2 -40P 2 O 5 -20ZrO 2 sol-gel is infiltrated in sSEBS membranes [112]. When a nanocomposite, Ag-silica is prepared using the sol-gel method, it gives a high electrical conductivity and regularly used for phosphoric acid fuel cells [113].…”

Section: Sol-gel Methodsmentioning

confidence: 99%

Fuel cell membranes – Pros and cons

Ogungbemi

Ijaodola

Khatib

et al. 2019

Energy

185

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This investigation provides a critical analysis of the development of PEM fuel cells and related research with specific focus on the membrane material. The catalytic membrane is the most important component of the PEMFC giving rise to the need for the use of efficient, durable and cheap material to reduce the overall cost of the fuel cell. In this work, the need for materials other than Nafion to be used as PEM membranes is established and a case for the use of composite membranes material in fuel cells is made. Composite membranes increase the cell voltage by up to 11% even at high cell operating temperature of 95°C. They also increase the overall performance of the cell by up to 17% when dry hydrogen is utilised.Non-fluorinated membranes are also suitable for use in fuel cells for portable applications but they are very expensive and less conductive. Partially fluorinated membranes have good mechanical stability but expensive. The fluorinated membrane has high stability under oxidation and reduction conditions. Unfortunately, they only reach their optimum performance at ACCEPTED MANUSCRIPT 1 temperatures below 100°C which makes them of limited use in PEM fuel cells application at higher temperatures.

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“…Some examples of heterogeneous catalyst and pollutants are Fe-SBA-15/H2O2 and Rhodamine B [28], FeOx,SiO2,TiO2/Ti/H2O2 and phenol [22], FeZSM-5 and Reactive Red 120 [29], Fe 3+ /Cu 2+grafted ZnO [37], copper loaded bentonite and Yellow FCF [38], Cu-Zeolites and 2-( m e t hy l m e r c a p t o ) -be n z o t h i a zo l e [ 3 9 ] , Fe/clinoptilolite zeolite and phenol [23], Cum o d i f i e d a l k a l i n i z e d g -C 3 N 4 [ 4 0 ] , CuO/Fe2O3/SBA-15 and N, N-diethyl-p-phenyl diamine degradation [41], Fe2O3/ACF and of acid red B [42], Fe/OMC and 4-chlorophenol [24], GO-Fe2O3 [43], HPW-Fe-Bent and methyl orange [44], Fe/meso-Al2O3 and phenol [45], Fe(III)-SiO2 and polyacrylamide [46], Fe(III)-HY [47], Fe-doped TiO2 and carboxylic acids [48], CsxH3−xPW12O40 [49], CuFeZSM-5 and Rhodamine 6G [50], Bi-doped goethitehematite and actual pesticide [51], Ag2O-ZnO [52], Schwertmannite and phenol [26], Fe- titanate [53], Ferric giniite [54], Fe3O4-GO and phenol [27], BiFeO3-g-C3N4 and lignin [55], MoS2/Fe3O4 [56], Ag loaded CoFe2O4/Fe2O3 and R6G [57]. Figure 1 (a, b, c, and d) shows the number of research papers related to the appli-cation of the hydrothermal method [57][58][59], wet impregnation method [22,28,29], sol-gel method [4,17,60], precipitation and co-precipitation method [61...…”

Section: Introductionmentioning

confidence: 99%

A Review Paper on Heterogeneous Fenton Catalyst: Types of Preparation, Modification Techniques, Factors Affecting the Synthesis, Characterization, and Application in the Wastewater Treatment

Kumar

Mohapatra

Dharmadhikari

et al. 2019

Bull. Chem. React. Eng. Catal.

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This comprehensive review focuses on the different factors, modification in the synthesis method, characterization and application of heterogeneous catalyst in the wastewater treatment based on the Fenton process. The present review highlights the different catalyst preparation methods like wet impregnation method, hydrothermal method, sol-gel method, precipitation method and their application to treat different recalcitrant organic chemicals. Major heterogeneous catalyst synthesis methods were discussed with their excellent workability. The importance of modification through physical and chemical method was also reported. Different catalyst, pollutants and optimum parametric conditions available in the literature along with some relevant studies are summarized. The effect of factors like pH, calcination and some other modifiers on the synthesis and their efficiency in the wastewater treatment has been described. The important characterization of synthesized catalysts explaining their working efficiency has also been discussed. In the final section, the application of heterogeneous catalyst synthesized by different methods in the wastewater/effluent treatment has been investigated. The main aim of this review is to find out the influence of process parameters and catalytic method on degradation/decolorization of organic compounds present in industrial or synthetic wastewater. Copyright © 2020 BCREC Group. All rights reserved

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Infiltration of 40SiO2−40P2O5−20ZrO2 sol-gel in sSEBS membranes for PEMFCs application

Cited by 10 publications

References 41 publications

40SiO2–40P2O5–20ZrO2 sol-gel infiltrated sSEBS membranes with improved methanol crossover and cell performance for direct methanol fuel cell applications

40SiO2–40P2O5–20ZrO2 sol-gel infiltrated sSEBS membranes with improved methanol crossover and cell performance for direct methanol fuel cell applications

Fuel cell membranes – Pros and cons

A Review Paper on Heterogeneous Fenton Catalyst: Types of Preparation, Modification Techniques, Factors Affecting the Synthesis, Characterization, and Application in the Wastewater Treatment

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