Modified-Pore-Filled-PVDF-Membrane Electrolytes for Direct Methanol Fuel Cells

Alwin, S.; Bhat, Santoshkumar D.; Sahu, A. K.; Jalajakshi, A; Sridhar, P.; Pitchumani, S.; Shukla, Anupam

doi:10.1149/1.3518774

Cited by 25 publications

(9 citation statements)

References 44 publications

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“…Reproduced with permission from [122] this problem [123]. Composite materials consist of two or more constituents with different physical and chemical properties which remain separate and distinct at the microscopic level and the properties of both the constituents are retained in a single physical material [124,125]. Anderson et al developed a method to prepare composite aerogel in which the desired guest is introduced to the sol just before gelation.…”

Section: Application Of Composite Aerogelsmentioning

confidence: 99%

Aerogels: promising nanostructured materials for energy conversion and storage applications

Alwin

Shajan

2020

Mater Renew Sustain Energy

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Aerogels are 3-D nanostructures of non-fluid colloidal interconnected porous networks consisting of loosely packed bonded particles that are expanded throughout its volume by gas and exhibit ultra-low density and high specific surface area. Aerogels are normally synthesized through a sol-gel method followed by a special drying technique such as supercritical drying or ambient pressure drying. The fascinating properties of aerogels like high surface area, open porous structure greatly influence the performances of energy conversion and storage devices and encourage the development of sustainable electrochemical devices. Therefore, this review describes on the applications of inorganic, organic and composite aerogel nanostructures to dye-sensitized solar cells, fuel cells, batteries and supercapacitors accompanied by the significant steps involved in the synthesis, mechanism of network formation and various drying techniques.

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Section: Application Of Composite Aerogelsmentioning

confidence: 99%

Aerogels: promising nanostructured materials for energy conversion and storage applications

Alwin

Shajan

2020

Mater Renew Sustain Energy

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“…Even though the selectivity of these pore-filling membranes is higher compared to Nafion 117, the obtained proton conductivity was found to be a moderate value (20 −2 -30 −2 Scm −1 ). Consequently, these pore-filling electrolyte membranes have caught the attention of other researchers, especially Alwin et al [60] and Khabibulin et al [61], due to its specialty towards methanol barrier properties and proton conductivity.…”

Section: Pore-filling Electrolyte Membranesmentioning

confidence: 99%

Performance of Polymer Electrolyte Membrane for Direct Methanol Fuel Cell Application: Perspective on Morphological Structure

et al. 2020

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Membrane morphology plays a great role in determining the performance of polymer electrolyte membranes (PEMs), especially for direct methanol fuel cell (DMFC) applications. Membrane morphology can be divided into two types, which are dense and porous structures. Membrane fabrication methods have different configurations, including dense, thin and thick, layered, sandwiched and pore-filling membranes. All these types of membranes possess the same densely packed structural morphology, which limits the transportation of protons, even at a low methanol crossover. This paper summarizes our work on the development of PEMs with various structures and architecture that can affect the membrane’s performance, in terms of microstructures and morphologies, for potential applications in DMFCs. An understanding of the transport behavior of protons and methanol within the pores’ limits could give some perspective in the delivery of new porous electrolyte membranes for DMFC applications.

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“…The acid-base Nafion composite membranes include blends of Nafion with polypyrrole (PPy) [98][99][100][101][102][103][104], polybenzimidazole (PBI) [105][106][107], poly (propyleneoxide) (PPO) [108,109], polyfurfuryl alcohol (PFA) [110], poly(vinyl alcohol) (PVA) [111][112][113][114][115], sulfonated phenol-formaldehyde (sPF) [116], polyvinylidene fluoride (PVdF) [117][118][119][120][121][122], poly(p-phenylene vinylene) (PPV) [123], poly(vinyl pyrrolidone) (PVP) [124] polyaniline (PANI) [125][126][127][128], polyethylene (PE) [129], poly(ethylene-terephtalate) [130], sulfated β-cyclodextrin (sCD) [131], sulfonated poly(ether ether ketone) (sPEEK) [132][133][134][135], sulfonated poly(aryl ether ketone) (sPAEK) [136], poly(arylene ether sulfone) (PAES) [137], poly(vinylimidazole) (PVI) [138], poly(vinyl pyridine) (PVPy) [139], poly (tetrafluoroethylene) (PTFE) [140][141]<...>…”

Section: Polymer/nafion Blendsmentioning

confidence: 99%

Membranes for Direct Alcohol Fuel Cells

Corti

2013

Direct Alcohol Fuel Cells

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This chapter is devoted to summarize and discuss the main properties of ionomeric membranes used in direct alcohol PEM fuel cells. Although Nafion is the proton exchange membrane commonly used in methanol and other direct alcohol fuel cells, other proton and alkaline membranes are being investigated in order to improve the efficiency of DAFC. The goals in the development of this critical component of DAFC are: low cost, long durability, low alcohol permeability and high electrical conductivity. The last two properties can be combined in a single parameter, the membrane selectivity that accounts for the ratio between the proton and alcohol transport through the membrane. This parameter can be compared to that measured for Nafion to define a relative selectivity, which is a primary parameter to evaluate the potentiality of a ionomer material to be used in alcohol feed fuel cells.The vast catalogue of polymeric materials reviewed here included Nafion composite with inorganic and organic fillers, and non-fluorinated proton conducting membranes such as sulfonated polyimides, poly(arylene ether)s, polysulfones, poly (vinyl alcohol), polystyrenes, and acid-doped polybenzimidazoles. Anionexchange membranes are also discussed because of the facile electro-oxidation of alcohols in alkaline media and because of the minimization of alcohol crossover in alkaline direct alcohol fuel cells.The performance of different types of membranes in direct alcohol fuel cells, mainly methanol, are summarized and discussed in order to identify the most promissory ones. The lack of correlation between the relative selectivity and fuel cell performance of the membranes indicates that the architecture of the three

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Modified-Pore-Filled-PVDF-Membrane Electrolytes for Direct Methanol Fuel Cells

Cited by 25 publications

References 44 publications

Aerogels: promising nanostructured materials for energy conversion and storage applications

Aerogels: promising nanostructured materials for energy conversion and storage applications

Performance of Polymer Electrolyte Membrane for Direct Methanol Fuel Cell Application: Perspective on Morphological Structure

Membranes for Direct Alcohol Fuel Cells

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