Synthesis of Poly(styrene-b-styrenesulfonic acid) and its Blend with PPO for Proton Exchange Membrane

2006 ◽  
Vol 6 (11) ◽  
pp. 3665-3669
Author(s):  
Chang G. Cho ◽  
Young G. You ◽  
Hye Y. Jang ◽  
Jung K. Woo ◽  
Sung K. An
Keyword(s):  
Proton Exchange Membrane ◽  
Weight Ratio ◽  
Polymer Electrolyte Membranes ◽  
Proton Exchange ◽  
Methanol Permeability ◽  
Stable Free Radical ◽  
Electrolyte Membranes ◽  
Total Molecular Weight ◽  
Exchange Membrane ◽  
Tempo Radical

Poly(styrene-b-styrenesulfonic acid sodium salts) (PS-b-PSSNa) were synthesized via stable free radical polymerization (SFRP) using 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) radical and the block copolymers were blended with poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) to prepare polymer electrolyte membranes (PEM). The ratio of block length and total molecular weight of PS-b-PSSA were varied, and weight ratio of PPO/PS-b-PSSA was also controlled. The blend membranes showed good proton conductivity, low methanol permeability, and good thermal property.

scholarly journals Enhancing the performance of SPEEK polymer electrolyte membranes using functionalized TiO2 nanoparticles with proton hopping sites

RSC Advances ◽  
2017 ◽  
Vol 7 (14) ◽  
pp. 8303-8313 ◽  
Author(s):  
Parisa Salarizadeh ◽  
Mehran Javanbakht ◽  
Saeed Pourmahdian
Keyword(s):  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membranes ◽  
Proton Exchange ◽  
Titanium Dioxide Nanoparticle ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Electrolyte Membranes ◽  
Ether Ketone ◽  
Exchange Membrane ◽  
Sulfonated Poly

In this work, the application of a sulfonated poly(ether ether ketone) (SPEEK)/amine functionalized titanium dioxide nanoparticle (AFT) composite as a novel membrane in proton exchange membrane fuel cells (PEMFC) was studied.

scholarly journals PEMBUATAN DAN KARAKTERISASI MEMBRAN KOMPOSIT KITOSAN-SODIUM ALGINAT TERFOSFORILASI SEBAGAI PROTON EXCHANGE MEMBRANE FUEL CELL (PEMFC)

2016 ◽  
Vol 1 (1) ◽  
pp. 14
Author(s):  
Siti Wafiroh ◽  
Suyanto Suyanto ◽  
Yuliana Yuliana
Keyword(s):  
Fuel Cell ◽  
Sodium Alginate ◽  
Proton Conductivity ◽  
Composite Membrane ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Methanol Permeability ◽  
Water Swelling ◽  
Exchange Membrane

AbstrakDi era globalisasi ini, kebutuhan bahan bakar fosil semakin meningkat dan ketersediannya semakin menipis. Oleh karena itu, dibutuhkan bahan bakar alternatif seperti Proton Exchange Membrane Fuel Cell (PEMFC). Tujuan dari penelitian ini adalah membuat dan mengkarakterisasi membran komposit kitosan-sodium alginat dari rumput laut coklat (Sargassum sp.) terfosforilasi sebagai Proton Exchange Membrane Fuel Cell (PEMFC). PEM dibuat dengan 4 variasi perbandingan konsentrasi antara kitosan dengan sodium alginat 8:0, 8:1, 8:2, dan 8:4 (b/b). Membran komposit kitosan-sodium alginat difosforilasi dengan STPP 2N. Karakterisasi PEM meliputi: uji tarik, swelling air, kapasitas penukar ion, FTIR, SEM, permeabilitas metanol, dan konduktivitas proton. Berdasarkan hasil analisis tersebut, membran yang optimal adalah perbandingan 8:1 (b/b) dengan nilai modulus young sebesar 0,0901 kN/cm2, swelling air sebesar 19,14 %, permeabilitas metanol sebesar 72,7 x 10-7, dan konduktivitas proton sebesar 4,7 x 10-5 S/cm. Membran komposit kitosan-sodium alginat terfosforilasi memiliki kemampuan yang cukup baik untuk bisa diaplikasikan sebagai membran polimer elektrolit dalam PEMFC. Kata kunci: kitosan, sodium alginat, terfosforilasi, PEMFC  AbstractIn this globalization era, the needs of fossil fuel certainly increases, but its providence decreases. Therefore, we need alternative fuels such as Proton Exchange Membrane Fuel Cell (PEMFC). The purpose of this study is preparationand characterization of phosphorylated chitosan-sodium alginate composite membrane from brown seaweed (Sargassum sp.) as Proton Exchange Membrane Fuel Cell (PEMFC). PEM is produced with 4 variations of concentration ratio between chitosan and sodium alginate 8:0, 8:1, 8:2, and 8:4 (w/w). Chitosan-sodium alginate composite membrane phosphorylated with 2 N STPP. The characterization of PEM include: tensile test, water swelling, ion exchange capacity, FTIR, SEM, methanol permeability, and proton conductivity. Based on the analysis result, the optimal membrane is ratio of 8:1 (w/w) with the value of Young’s modulus about 0.0901 kN/cm2, water swelling at 19.14%, methanol permeability about 72.7 x 10-7, and proton conductivity about 4.7 x 10-5 S/cm. The phosphorylated chitosan-sodium alginate composite membrane has good potentials for the application of the polymer electrolyte membrane in PEMFC. Keywords: chitosan, sodium alginate, phosphorylated, PEMFC

scholarly journals Increasing the efficiency Proton exchange membrane (PEMFC) & other fuel cells through multi graphene layers including polymer membrane electrolyte

2020 ◽  
Vol 8 (1) ◽  
pp. 95-107
Author(s):  
Azin Chitsazan ◽  
Majid Monajje
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Alkaline Electrolyte ◽  
Membrane Thickness ◽  
Graphene Layers ◽  
Electrolyte Membranes ◽  
Polymer Membrane Electrolyte ◽  
Lower Temperature ◽  
Exchange Membrane

Multi layers Graphene has been simulated theoretically for hydrogen storage and oxygen diffusion at a single unit of fuel cell. Ion transport rate of DFAFC, PAFC, AFC, PEMFC, DMFC and SOFC fuel cells have been studied. AFC which uses an aqueous alkaline electrolyte is suitable for temperature below 90 degree and is appropriate for higher current applications, while PEMFC is suitable for lower temperature compared to others. Thermodynamic equations have been investigated for those fuel cells in viewpoint of voltage output data. Effects of operating data including temperature (T), pressure (P), proton exchange membrane water content (λ) , and proton exchange membrane thickness on the optimal performance of the irreversible fuel cells have been studied.Obviously, the efficiency of PEMFC extremely related to amount of the H2 concentration, water activities in catalyst substrates and polymer of electrolyte membranes, temperature, and such variables dependence in the direction of the fuel and air streams.

Studies on Preparation and Methanol Permeability of PVDF-g-PAMPS Membrane

2011 ◽  
Vol 335-336 ◽  
pp. 157-160 ◽  
Author(s):  
Jia Xu ◽  
Gui Bao Guo
Keyword(s):  
Sodium Silicate ◽  
Sulfonic Acid ◽  
Proton Exchange Membrane ◽  
Vinylidene Fluoride ◽  
Ammonium Persulfate ◽  
Proton Exchange ◽  
Methanol Permeability ◽  
Poly Vinylidene Fluoride ◽  
Methyl Pyrrolidone ◽  
Exchange Membrane

A proton exchange membrane of poly (vinylidene fluoride) grafted onto poly (2-acrylamido-2-methylpropane sulfonic acid) (PVDF-g-PAMPS) was prepared as follows: acrylamido-2-methylpropane sulfonic acid (AMPS) was first added to a N-Methyl pyrrolidone (NMP) solution containing poly (vinylidene fluoride) (PVDF) that was modified with plain sodium silicate. Ammonium persulfate was then added as an evocating agent and PAMPS was directly grafted onto the PVDF that was modified with plain sodium silicate. The influences of AMPS contents on the proton conductivity and methanol permeability were studied. The results showed that AMPS is easily grafted into PVDF modified by Plain sodium silicate (Na4SiO4), with increasing of the content of 2-acrylamido-2-methylpropane sulfonic acid, the methanol permeability became large gradually of PVDF-g-PAMPS membranes was increased.

Study of Novel Self-Humidifying PEMFC with Nano-TiO2-Based Membrane

2007 ◽  
Vol 280-283 ◽  
pp. 899-902
Author(s):  
Wang Cheng ◽  
Zong Qiang Mao ◽  
Jing Ming Xu ◽  
Xiao Feng Xie
Keyword(s):  
Proton Exchange Membrane ◽  
Sol Gel ◽  
Proton Exchange ◽  
Nano Tio2 ◽  
Cathode Reaction ◽  
Tio2 Particles ◽  
Electrolyte Membranes ◽  
Low Humidity ◽  
Titanium Dioxides ◽  
Exchange Membrane

We propose self-humidifying polymer electrolyte membranes with highly dispersed nanometer-sized Titanium dioxides for proton exchange membrane fuel cells operated with dry H2 and O2. The nanosized TiO2 particles that have hygroscopic property are expected to adsorb the water produced from the cathode reaction and to release the water once the proton exchange membrane needs water. The preparation technology of nano-TiO2 particles in a commercial Nafion 112 membrane via novel in situ sol-gel reactions was developed, resulting in a semitransparent membrane with uniform distribution of TiO2 in the proton exchange membrane. It is found that Proton conductivity increases observably by dispersing 3 wt % nano-TiO2 in the Proton exchange membrane at low humidity condition, and the newly prepared TiO2-PEM improve the self-humidifying performance of Proton exchange membrane fuel cell.

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