Mixed conductivity of composites based on a perfluorinated membrane incorporating polyaniline

Kubaisy, Anna A.; Smolka, Roman; Sukhatskiy, Anton

doi:10.1016/j.desal.2006.03.397

Cited by 3 publications

(1 citation statement)

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“…It had been shown previously that introducing cation-repelling layers into membranes decreases ion transport and proton conductivity across membranes. [38,39] Schwenzer et al observed that, in comparison, PANI/N117 composite membranes showed a higher reduction of V 4 + ion diffusion for a given area specific resistance than PPR/N117 membranes. [37] Spectroscopic analysis revealed that PANI interacts more strongly with the sulfonic acid groups that line the Nafion channels than PPR.…”

Section: Vanadium Ion Permeabilitymentioning

confidence: 99%

Membrane Development for Vanadium Redox Flow Batteries

et al. 2011

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Large-scale energy storage has become the main bottleneck for increasing the percentage of renewable energy in our electricity grids. Redox flow batteries are considered to be among the best options for electricity storage in the megawatt range and large demonstration systems have already been installed. Although the full technological potential of these systems has not been reached yet, currently the main problem hindering more widespread commercialization is the high cost of redox flow batteries. Nafion, as the preferred membrane material, is responsible for about 11% of the overall cost of a 1 MW/8 MWh system. Therefore, in recent years two main membrane related research threads have emerged: 1) chemical and physical modification of Nafion membranes to optimize their properties with regard to vanadium redox flow battery (VRFB) application; and 2) replacement of the Nafion membranes with different, less expensive materials. This review summarizes the underlying basic scientific issues associated with membrane use in VRFBs and presents an overview of membrane-related research approaches aimed at improving the efficiency of VRFBs and making the technology cost-competitive. Promising research strategies and materials are identified and suggestions are provided on how materials issues could be overcome.

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Section: Vanadium Ion Permeabilitymentioning

confidence: 99%