Synthesis and properties of stretched polytetrafluoroethylene–sulfonated polystyrene nanocomposite membranes

Abdrashitov, E. F.; Kritskaya, D. A.; Bokun, V. Ch.; Ponomarev, A. N.; Сангинов, Е. А.; Dobrovolsky, Yu. A.

doi:10.1016/j.ssi.2016.01.025

Cited by 18 publications

(9 citation statements)

References 14 publications

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“…Membrane synthesis : The membranes were prepared according to a previously published procedure [33] by the thermal copolymerization of styrene with DVB inside of a stretched PTFE film followed by sulfonation. Briefly, weighed PTFE films were mounted in a stretching machine, immersed in a reaction solution of styrene‐toluene‐DVB‐azobisisobutyronitrile (1 : 1 : 0.05 : 0.005) and stretched by 100 %.…”

Section: Methodsmentioning

confidence: 99%

“…The surface fraction of the conducting phase was determined through the water contact angle measurement on KRUSS DSA25 contact angle test apparatus (Germany) and calculated with the formula presented in our previous work. [33] Ion-transport properties: Through-plane conductivity was determined from the EIS data. The sample swollen in 2.5 M H 2 SO 4 was put in a sandwich-type cell with two blocking platinum electrodes; EIS data were collected from 100 kHz to 0.1 Hz; the cell resistance was taken as an intersect of the real axes at Nyquist plot.…”

Section: Membrane Characterizationmentioning

confidence: 99%

“…Up to date, composite materials with sulfonated polystyrene (sPS) as a main ion‐transport phase have not been studied deeply for RFB application. However, they were reported as membranes for polymer fuel cells with satisfactory cycling characteristics [33,34] …”

Section: Introductionmentioning

confidence: 99%

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A Composite Membrane Based on Sulfonated Polystyrene Implanted in a Stretched PTFE Film for Vanadium Flow Batteries

et al. 2020

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The quality of ion-selective membranes determines the efficiency of Vanadium Flow Batteries (VFBs), and alternatives to expensive Nafion™ materials are actively being searched for. One of the membrane architecture approaches is to imitate the Nafion™ structure with two separate phases: a conductive sulfonated polymer and an inner matrix. We introduce a new composite material based on sulfonated styrene polymerized inside the pores of a stretched PTFE matrix. Variation of polystyrene content and a sulfonation degree allowed to obtain membranes with IEC from to 0.96 to 1.84 mmol/g. Balanced vanadium permeability (ca. 5.5 • 10 À 6 cm 2 /min) and proton conductivity (ca. 50 mS/cm) were achieved for the material with 21-23 % polystyrene content and a sulfonation degree up to 94 %. Membranes showed stable cycling with 81 % energy efficiency in a single-cell VFB. This work contributes to the existing knowledge of Nafion alternatives by providing a cheap and scalable method of membrane production.

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Section: Methodsmentioning

confidence: 99%

Section: Membrane Characterizationmentioning

confidence: 99%

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A Composite Membrane Based on Sulfonated Polystyrene Implanted in a Stretched PTFE Film for Vanadium Flow Batteries

et al. 2020

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“…However, as cost is also concern, there are also another trend in developing new fuel cell membrane form in expensive material [18]. This leads to the attention on sulfonated polystyrene [19][20][21][22] which easily available in the market and beside its ability for DMFC application [23][24].…”

Section: Introductionmentioning

confidence: 99%

Roles of Preparation Method on Characteristics of Supramolecular-Structured Polymer Electrolyte Membrane Fuel Cell Based on Sulfonated Polystyrene

Hendrana¹,

Semboor

Natanael

et al. 2018

jsmi

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Polystyrene (S-PS) have been developed in Research Centre for Physics LIPI. In forming the supramolecular structure sulfonate groups in S-PS are aligned with polyethylene-graft-maleic anhydride (PE-g-MA) which carried out by dissolution of the constituent and mixing of both. The alignment of sulfonate groups in s-PS is carried out in a liquid form. Therefore, in this study, the effect of concentration of the solution of both polymers constituent to the alignment of the sulfonate groups and the characteristics of the membrane produced is studied. Scanning Electron Microscope (SEM) images show that all membranes prepared are rigid. Differential Scanning Calorimetry (DSC) studied show very significance differences in its crystal sizes. XRD diffraction data also support the previous results. Membrane prepared from very dilute solution having better ion exchange capacity (IEC), water uptake and ionic conductivity. Therefore, the experiments results showing that very low concentration of polymer constituent, clearly, produced better interaction of both, which agree with hyphotesis in this work where supramolecular structure can be formed by mixing two very dilute polymer solutions.Keywords: PEMFC, Sulfonated polystyrene, PE-g-MA, Supramolecular structure ABSTRAK PERAN METODE PREPARASI PADA KARAKTETISTIK DARI POLIMER ELEKTROLIT MEMBRAN FUEL CELL DENGAN STRUKTUR SUPRAMOLEKULAR BERBASIS POLISTIREN TERSULFONASI.Polimer Elektrolit Membran Fuel Cell dengan struktur supramolekular berbasis polistirena tersulfonasi (S-PS) telah dikembangkan di Pusat Penelitian Fisika LIPI. Pada pembentukan struktur supramolekular gugus sulfonat pada polistirena tersulfonasi diarahkan dengan polietilen-graft-anhidrida maleat (PE-g-MA) yang dilakukan dengan melarutkan kedua bahan penyusun tersebut. Pengarahan gugus sulfonat dari S-PS dilakukan dalam kondisi cair. Karenanya, dalam studi ini, efek dari konsentrasi dari kedua larutan polimer penyusun pada pengarahan gugus karbonat dimaksud dan karakteristik-karakteristik dari membran yang dihasilkan akan dipelajari. Image SEM menunjukkan bahwa semua membran yang dibuat adalah rigid. Studi DSC menunjukkan terdapat perbedaan yang sangat berarti pada ukuran kristal. Data XRD juga mendukung hasil-hasil yang diperoleh. Membran yang dibuat dengan larutan yang sangat encer memiliki kapasitas petukaran ion (EIC), tangkapan-air dan konduktifitas ionik yang lebih baik. Oleh karenanya, data eksperimen menunjukkan

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“…The best membranes so far is the one based on perfluorocarbon polymer [5][6]. There are a lot of available alternative for membranes [7] including sulfonated polystyrene-based membranes [8][9].…”

Section: Introductionmentioning

confidence: 99%

Application of Sulfonated Polystyrene in Polymer Electrolyte Fuel Cell

Hendrana

Erwin

Krisman

et al. 2018

jsmi

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APPLICATION OF SULFONATED POLYSTYRENE IN POLYMER ELECTROLYTE FUEL CELL. Sulfonated polystyrene (SPS) is polyelectrolyte solid that widely used in many aplications. In this works SPS is applied for some parts of polymer electrolyte fuel cell membrane due sulfonate group available in the structure. The investigation involve the application for membrane with addition of small molecules, i.e. benzimidazole and evaluating its microstructure and performance. Application of SPS solution as binding agent in MEA will also be presented. The results show that when using SPS as fuel cell membrane, the additon of small molecules such as benzimidazole would modify its microstrusture as well as improve its ion conductivity. Meanwhile, some improvement still required for application of SPS solution as binding agent for preparation of Membrane Electrode Assembly or MEA.

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Synthesis and properties of stretched polytetrafluoroethylene–sulfonated polystyrene nanocomposite membranes

Cited by 18 publications

References 14 publications

A Composite Membrane Based on Sulfonated Polystyrene Implanted in a Stretched PTFE Film for Vanadium Flow Batteries

A Composite Membrane Based on Sulfonated Polystyrene Implanted in a Stretched PTFE Film for Vanadium Flow Batteries

Roles of Preparation Method on Characteristics of Supramolecular-Structured Polymer Electrolyte Membrane Fuel Cell Based on Sulfonated Polystyrene

Application of Sulfonated Polystyrene in Polymer Electrolyte Fuel Cell

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