Fabrication and investigation of SiO2 supported sulfated zirconia/Nafion® self-humidifying membrane for proton exchange membrane fuel cell applications

Bi, Cheng; Zhang, Huamin; Zhang, Yu; Zhu, Xiaobing; Ma, Yuanwei; Dai, Hua; Xiao, Shijun

doi:10.1016/j.jpowsour.2008.06.019

Cited by 67 publications

(39 citation statements)

References 44 publications

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“…In the present study, since nano-silicon dioxide (n-SiO 2 ) is known to be the best hygroscopic oxide, 17 it was used as a filler to increase the hydrophilic character of CA membranes in order to compare and determine the effect of sonic treatment on the water sorption capacity and permeability of sonically treated CA membranes. Since CA is frequently used in drug release studies, theophylline was used as a model chemical for the permeation studies.…”

Section: 2021mentioning

confidence: 99%

“…Furthermore, the S % values of CA membranes were slightly changed by the addition of n-SiO 2 , although it is known as a strongly hygroscopic compound. 17 This most probably resulted from the strong intermolecular attractive forces between the CA chains. 27 In our previous study 27 we tried to modify CA membranes by using a water soluble plasticizing and pore forming agent poly (ethylene glycol) (PEG), which has also high hydrophilicity.…”

mentioning

confidence: 99%

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Effect of sonic treatment on the permeation performance of cellulose acetate membranes modified by n-SiO$_{2}$

Asman¹,

Kaya²,

Bayramgil³

2015

Turk J Chem

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Cellulose acetate (CA) membranes were modified by nano-silicon dioxide (n-SiO 2) , and they were exposed to ultrasonic waves at a frequency of 35 kHz. The effect of sonication on their water sorption tendency and permeation capability was investigated. The characterization of the membranes was done by FTIR and SEM analysis, and the hydrophilic character of the membranes was deduced by swelling studies and contact angle (CAn) measurements.Permeation studies of the membranes were performed by using the diffusion method and theophylline was used as a model chemical in the permeation studies. The results indicated that beside the high hygroscopic property of n-SiO 2 , the presence of n-SiO 2 in CA membranes did not significantly improve their hydrophilicity; however, when they were exposed to sonic waves, it was determined that the sonication effectively enhanced their water sorption capacity and permeability.

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Section: 2021mentioning

confidence: 99%

mentioning

confidence: 99%

Effect of sonic treatment on the permeation performance of cellulose acetate membranes modified by n-SiO$_{2}$

Asman¹,

Kaya²,

Bayramgil³

2015

Turk J Chem

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“…1.28 W cm -2 at 80°C and 0.75 W cm -2 at 120°C). A self-humidifying composite membrane based on Nafion ® hybrid with SiO 2 supported sulfated zirconia particles (SiO 2 -SZ) was fabricated and investigated for fuel cell application by Bi et al (2008). The bi-functional SiO 2 -SZ particles, possessing hygroscopic property and high proton conductivity, was incorporated in recast Nafion ® membrane.…”

Section: Organic/zirconia and Sulfated Zirconia Nanocomposite Membranesmentioning

confidence: 99%

Organic/Inorganic Nanocomposite Membranes Development for Low Temperature Fuel Cell Applications

Mokrani¹

2012

Advances in Chemical Engineering

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“…Water uptake is an important property for PEMs which needs to be seriously considered, because the loss of water is anticipated to bring two negative impacts on cell performance: decreased proton conductivity and degraded membrane-catalyst interface [37][38][39]. To verify the improved hygroscopic property of membranes by incorporating PAC particles, the water uptakes were measured.…”

Section: Water Uptakementioning

confidence: 99%

Casting Membrane of Acrylamide/Polymethacrylic acid and Reinforced by PAC for Application in Fuel Cell Unit

EE¹,

MM²

2012

J Membra Sci Technol

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that mechanical degradation of the membranes under operational conditions is one of the major reasons for the performance degradation of phosphoric acid-doped polymer fuel cells [22,23]. Optimization of casting solvent is very important for membrane fabrication as it affects the consequent separation performance. Macro-phase separation can be observed for blended membranes cast from polymer/solvent solution, and asymmetric membranes are prepared by phase separation methods [24]. Different solvent pairs result in different membrane morphology and performance. For symmetric (dense) membrane also, fabrication conditions can markedly affect permeation properties [25]. The membrane behavior of a given polymer strongly depends on both the intrinsic material properties and the membrane fabrication conditions. Moreover, practical applications, it is essential to understand the consequences of membrane fabrication conditions, e.g. the effect of solvent selection on the physical structure of the membranes must be carried out. Under the program of the New Energy and Industrial Technology Development Organization, Sanyo Electric Corp., Toshiba Fuel Cell Power System Corp., Matsushita Electric Industrial Corp., Ebara Ballard Corp. and Aishin Seiki Corp. have been examining the possibility of commercializing a 1kW-class PEMFC residential system based on polymer membranes that operates in the temperature region 70-80°C. Such low-temperature operation is an advantage of this type of fuel cell, but it also causes some problems, including low electrical efficiency [26,27] and CO poisoning of the platinum catalyst [28,29]. Furthermore, polymer electrolytes only exhibit high proton conductivities at high humidities. High-temperature PEMFCs (HT- AbstractGamma irradiation poses very important role for casting the polymer membranes. Acrylamide was hydrolyzed by phosphoric acid, while it plays a potential role for coordination of poly methacrylic acid and hydrolyzed acrylamide (acrylic acid) around them. Adding PAC in different ratios for membrane reinforcement besides adsorbing excess of hydrogen proton in aqueous media which enhances proton conductivity. Thermal characterization of the membranes was carried out using thermal gravimetric analysis, while their mechanical properties were investigated by measuring hardness and Chemical description was discussed by studying FTIR and ion exchange capacity (IEC). Morphological characteristics were performed by scan electron microscope. Crystallinity was reviewed using X-ray diffraction which attempts the homogeny of the casted membrane. Electrical resistivity of the membrane was measured resulted in 7 ohm/cm while it reduced to 2.7 ohm by temperature rising to 80°C which confirmed the availability of the membrane in fuel cell usage.

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Fabrication and investigation of SiO2 supported sulfated zirconia/Nafion® self-humidifying membrane for proton exchange membrane fuel cell applications

Cited by 67 publications

References 44 publications

Effect of sonic treatment on the permeation performance of cellulose acetate membranes modified by n-SiO$_{2}$

Effect of sonic treatment on the permeation performance of cellulose acetate membranes modified by n-SiO$_{2}$

Organic/Inorganic Nanocomposite Membranes Development for Low Temperature Fuel Cell Applications

Casting Membrane of Acrylamide/Polymethacrylic acid and Reinforced by PAC for Application in Fuel Cell Unit

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