Nafion/PVDF nanofiber composite membranes for regenerative hydrogen/bromine fuel cells

Park, Jun Woo; Wycisk, Ryszard; Pintauro, Peter N.

doi:10.1016/j.memsci.2015.04.044

Cited by 88 publications

(59 citation statements)

References 21 publications

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“…Therefore, in contrast to electrodes, a promising pathway here is to focus either on diluting the more expensive component with a filler or reinforcement 12,30 or on inherently lower-cost materials such as porous separators that are analogous to those used in some conventional batteries. A performance decrease is acceptable with these approaches, since the cost of these alternative materials can be on-the-order of 50 times lower (e.g., ≈$10 /m 2 ).…”

Section: Advanced Separatorsmentioning

confidence: 99%

Advanced Redox-Flow Batteries: A Perspective

Perry¹,

Weber

2015

J. Electrochem. Soc.

304

227

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Redox-flow batteries are entering a period of renaissance, buoyed by both the increasing need for affordable large-scale energystorage solutions, as well as leveraging the advancements in flow-cell technology, mainly in polymer-electrolyte fuel cells. This perspective highlights the research-and-development avenues and opportunities for redox-flow-battery cells and materials. © The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited. Redox-Flow Batteries (RFBs) are an Electrical-Energy-Storage (EES) technology that was first developed by NASA during the energy crisis of the 1970's. Unlike traditional batteries, RFBs utilize redox couples that can be stored in independent tanks and only brought together when power is needed through an energy-conversion cell stack as shown in Fig. 1. 1 It has long been recognized that stationary EES systems could save substantial quantities of energy, as well as provide other potential benefits, such as improved reliability and reduced emissions. However, to date, most electrical grids utilize minimal storage since EES technologies have not been economically viable and proven. There is a growing need for grid-and urban-scale EES, due to a number of factors (e.g., the growth in stochastic renewable energy-generation systems, "smart-grid" initiatives, time-of-use rates, aggregation of generation resources, etc.), but this growth in demand does not necessarily lead to more attractive cost targets for EES systems. The competing technology that dictates cost is essentially rapid-response power generation, such as spinning reserves of various gas turbines. Grid-scale EES must still reach lower cost in order to be widely deployed. The cost targets for grid-scale EES are typically more aggressive than those for portable or transportation applications; however, the typical size of the EES system is also orders of magnitude larger, as shown in Fig. 2. Clearly, an EES technology that can scale up in a cost-effective manner is highly desirable and necessary.RFBs are inherently well suited for large applications since they scale-up in a more cost-effective manner than other batteries. Since the energy and power capacities of a RFB system are independent variables, the required capacities for any application can be met using correctly-sized energy and power modules. RFBs also possess other compelling attributes for stationary EES applications, especially longduration applications. For example, the RFB architecture enables long lifetimes since the electrodes are not inherently required to undergo physiochemical changes during charge/discharge cycles. Because of the growing demand for grid-scale EES and the inherent attractive attributes of RFBs, the technology appears to be undergoing a renaissance period. This growth in RFB research is readily evident...

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Section: Advanced Separatorsmentioning

confidence: 99%

Advanced Redox-Flow Batteries: A Perspective

Perry¹,

Weber

2015

J. Electrochem. Soc.

304

227

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“…The sulfonated SPEEKK membrane exhibited a high proton conductivity (0.37 S/cm), which is 37-times higher than that of the common SPEEKK membrane. The Nafion and PVdF composite membranes were fabricated by electrospinning [177]. They studied the Nafion NFs embedded in a PVdF matrix (N(fibers)/PVdF) and PVdF NFs embedded in a Nafion matrix (N/PVdF(fibers)).…”

Section: Applicationsmentioning

confidence: 99%

Electrospinning of Nanofibers for Energy Applications

et al. 2016

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With global concerns about the shortage of fossil fuels and environmental issues, the development of efficient and clean energy storage devices has been drastically accelerated. Nanofibers are used widely for energy storage devices due to their high surface areas and porosities. Electrospinning is a versatile and efficient fabrication method for nanofibers. In this review, we mainly focus on the application of electrospun nanofibers on energy storage, such as lithium batteries, fuel cells, dye-sensitized solar cells and supercapacitors. The structure and properties of nanofibers are also summarized systematically. The special morphology of nanofibers prepared by electrospinning is significant to the functional materials for energy storage.

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“…Transport properties [1], morphology, nanofiber membranes [2] and multiblock copolymers [3] for fuel cell, hybrid configuration of nafion/silica nanofiber [4] and some other features of the perfluorinated membranes have been investigated extensively. Doyle et al [5] have investigated the relationship between ionic conductivity of the perfluorinated membranes and non-aqueous solvent properties.…”

Section: Introductionmentioning

confidence: 99%