Proton conducting copolymers on the basis of vinylphosphonic acid and 4-vinylimidazole

Bozkurt, Ayhan; Meyer, Wolfgang; Gutmann, Jochen S.; Wegner, Gerhard

doi:10.1016/j.ssi.2003.09.005

Cited by 95 publications

(75 citation statements)

References 7 publications

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“…AL exhibits broad peaks around 2 ¼ 14 and 21 which can be attributed to the amorphous structure. For ALTri 1:5 , the peak at 14 almost disappeared and at 21 become more intense as the complex formed between AL and Tri. These results showed that the difference in the intensities of the peaks for each composition reflects the sequential structure of complex electrolytes and AlTri 1:5 has a greater ordered morphology.…”

Section: Resultsmentioning

confidence: 97%

Preparation and Proton Conductivity of Polymer Electrolytes Based on Alginic Acid and 1,2,4-Triazole

Günday

Bozkurt

2007

Polym J

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Section: Resultsmentioning

confidence: 97%

Preparation and Proton Conductivity of Polymer Electrolytes Based on Alginic Acid and 1,2,4-Triazole

Günday

Bozkurt

2007

Polym J

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“…Figure 2 shows the IR spectra of (a) PVPA material, (b) PVPA-89 mol % Im, and (c) pure Im materials. The absorption band at 1140 cm À1 , which can be attributed to the phosphonyl group (P=O) of PVPA, 54,[64][65][66][67][68] 63 as the amount of Im increased (not shown here). These results suggest that P-OH group in acidic polymer deprotonates by the extraction of protons by basic molecules and form anionic P-O À group.…”

Section: Acid-base Composite Materialsmentioning

confidence: 89%

Bio-Inspired Membranes for Advanced Polymer Electrolyte Fuel Cells. Anhydrous Proton-Conducting Membrane via Molecular Self-Assembly

Honma¹,

Yamada²

2007

Bulletin of the Chemical Society of Japan

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Bio-inspired materials or natural biopolymers have attracted much attention for industrial applications as biocompatible materials. Although these materials have been discarded as industrial waste around the world, there is an increasing interest in environmental, engineering, and electrical applications of the biomaterials because of their well-controlled structures and superior conducting properties. The controlled structures of the hydrogen-bonding network in biomolecules, such as bioenergetic proteins, are essential for efficient energy transduction in living systems and application of a biomolecular mechanism could make it possible to prepare efficient electrolytes with superior conducting properties. We report here a recent investigation on the new class and new concept of electrolyte materials with bio-inspired molecular architectures of acid-base pairs for anhydrous proton conduction and its application in intermediate temperature C) polymer electrolyte fuel cells (PEFC). Although some membranes were composed from entirely biomolecular materials, they showed large anhydrous proton conductivities from room temperature to 160 C, and fuel cells employing biomembranes as a polymer electrolyte produced electrical power under non-humidified H 2 /O 2 condition at 160 C. These bio-inspired materials may have many potential applications not only because of its superior ion conducting properties, in particular, under anhydrous (water-free) or extremely low-humidity conditions, but also because of its biocompatibility.Increasing interest toward the global sustainable energy has occurred in relation to political, economical, and environmental protection aspects, whereas, from an industrial development point of view, advanced energy technology is becoming intensively important recently in ordered to reduce fossil fuel consumption and keep the environment clean for human activities. The Kyoto protocol has stimulated research activities in renewable energy technology in every nation and every industrial sector. Among them, polymer electrolyte fuel cells (PEFC) have been recognized as most promising energy conversion devices because they are much very efficient and emit less of CO 2 from automobile, terrestrial, and industrial power sources.

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“…Since the C-P bond is stable against hydrolysis, phosphonic acid functionalized polymers seem for example a promising alternative to the binary PBI/H 3 PO 4 systems. [35][36][37][38] Also for such functionalized polymers it has been shown that the microstructure plays a significant role, as aggregation of phosphonic acid groups is necessary to obtain good proton transport properties in the dry state. [8] Polymer post-functionalization strategies like grafting or polymer reactions also showed to be a versatile pathway to achieve phosphonic acid based, phase separated morphologies.…”

Section: Fuel Cell Membranesmentioning

confidence: 99%

Porous Polymers: Enabling Solutions for Energy Applications

Thomas

Kuhn

Weber

et al. 2009

Macromol. Rapid Commun.

190

126

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A new generation of porous polymers was made for various energy-related applications, e.g., as fuel cell membranes, as electrode materials for batteries, for gas storage, partly from renewable resources. This review intends to catch this emerging field by reporting on a variety of different approaches to make high performing polymers porous. This includes template techniques, polymers with inherent microporosity, polymer frameworks by ionothermal polymerization, and the polymerization of carbon from appropriate precursors and by hydrothermal polymerization. In this process, we try to not only identify the current status of the field, but also point to open question and tasks to identify the potentially relevant progress.

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Proton conducting copolymers on the basis of vinylphosphonic acid and 4-vinylimidazole

Cited by 95 publications

References 7 publications

Preparation and Proton Conductivity of Polymer Electrolytes Based on Alginic Acid and 1,2,4-Triazole

Preparation and Proton Conductivity of Polymer Electrolytes Based on Alginic Acid and 1,2,4-Triazole

Bio-Inspired Membranes for Advanced Polymer Electrolyte Fuel Cells. Anhydrous Proton-Conducting Membrane via Molecular Self-Assembly

Porous Polymers: Enabling Solutions for Energy Applications

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