Solution blown sulfonated poly(ether ether ketone) nanofiber–Nafion composite membranes for proton exchange membrane fuel cells

Xu, Xin; Li, Li; Wang, Hang; Li, Xiaojie; Zhuang, Xupin

doi:10.1039/c4ra10898a

Cited by 64 publications

(33 citation statements)

References 19 publications

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“…PEMFC performance of the composite was notably better than for Nafion, although DMFC performance was only slightly better, as the increase in selectivity to methanol was moderate. An interesting result was obtained with Nafion-filled SPEEK nanofibers mats, in which conductivity was higher than in both Nafion and recast SPEEK over a wide range of temperatures and RH values (Xu et al 2015). However, similar to the above report by , conductivity was measured in parallel to the surface and may not represent correctly the conductivity in the direction normal to the surface.…”

Section: Isotropic Pore-filling Membranescontrasting

confidence: 38%

Understanding methods of preparation and characterization of pore-filling polymer composites for proton exchange membranes: a beginner’s guide

Gloukhovski

Freger

Tsur

2017

Reviews in Chemical Engineering

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Abstract Composite membranes based on porous support membranes filled with a proton-conducting polymer appear to be a promising approach to develop novel proton exchange membranes (PEMs). It allows optimization of the properties of the filler and the matrix separately, e.g. for maximal conductivity of the former and maximal physical strength of the latter. In addition, the confinement itself can alter the properties of the filling ionomer, e.g. toward higher conductivity and selectivity due to alignment and restricted swelling. This article reviews the literature on PEMs prepared by filling of submicron and nanometric size pores with Nafion and other proton-conductive polymers. PEMs based on alternating perfluorinated and non-perfluorinated polymer systems and incorporation of fillers are briefly discussed too, as they share some structure/transport relationships with the pore-filling PEMs. We also review here the background knowledge on structural and transport properties of Nafion and proton-conducting polymers in general, as well as experimental methods concerned with preparation and characterization of pore-filling membranes. Such information will be useful for preparing next-generation composite membranes, which will allow maximal utilization of beneficial characteristics of polymeric proton conductors and understanding the complicated structure/transport relationships in the pore-filling composite PEMs.

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Section: Isotropic Pore-filling Membranescontrasting

confidence: 38%

Understanding methods of preparation and characterization of pore-filling polymer composites for proton exchange membranes: a beginner’s guide

Gloukhovski

Freger

Tsur

2017

Reviews in Chemical Engineering

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“…80 Poly(ether sulfone)/Nafion and poly(ether ether ketone)/Nafion composite proton exchange membranes were also fabricated using SBS fibers impregnated with Nafion solution. 81–83 …”

Section: Sbs Applications and Innovationsmentioning

confidence: 99%

A Review of the Fundamental Principles and Applications of Solution Blow Spinning

Daristotle

Behrens

Sandler

et al. 2016

ACS Appl. Mater. Interfaces

323

242

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Solution blow spinning (SBS) is a technique that can be used to deposit fibers in situ at low cost for a variety of applications, which include biomedical materials and flexible electronics. This review is intended to provide an overview of the basic principles and applications of SBS. We first describe a method for creating a spinnable polymer solution and stable polymer solution jet by manipulating parameters such as polymer concentration and gas pressure. This method is based on fundamental insights, theoretical models, and empirical studies. We then discuss the unique bundled morphology and mechanical properties of fiber mats produced by SBS, and how they compare with electrospun fiber mats. Applications of SBS in biomedical engineering are highlighted, showing enhanced cell infiltration and proliferation versus electrospun fiber scaffolds and in situ deposition of biodegradable polymers. We also discuss the impact of SBS in applications involving textiles and electronics, including ceramic fibers and conductive composite materials. Strategies for future research are presented that take advantage of direct and rapid polymer deposition via cost-effective methods.

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“…However, all the composite membranes demonstrated lower swelling ratio than the cast Nafion membrane. This result was attributed to the embedded crimped nanofibers that were entangled to form a three‐dimensional nanofiber network, which functioned as a skeleton in the composite membranes and improved the dimension stability of the membrane . The mechanical properties of each membrane were shown in Figure F.…”

Section: Resultsmentioning

confidence: 97%

“…Figure A illustrates the barrier methanol properties of various composite membranes. The introduction of nanofiber mats provided a tortuous methanol diffusion channel and an intricate barrier that reduced the crossover of methanol . With CC3 content increasing, the performance of blocking methanol first increased and then decreased.…”

Section: Resultsmentioning

confidence: 99%

Enhancing proton conductivity of proton exchange membrane with SPES nanofibers containing porous organic cage

Shao

Shi

et al. 2020

Polymers for Advanced Techs

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Effective proton conducting sites and establishing proton channels are two critical factors in developing high-performance proton exchange membranes. This study first establishes a strategy in designing effective proton conducting channels for Nafion by using solution blowing of sulfonated polyethersulfone (SPES) nanofibers containing CC3, which is an emerging porous organic cage that possesses the advantages of dissolvable organic solvents and high proton conduction from its interconnected three-dimensional pore structure. Our strategy results in SPES nanofiber networks with CC3 uniformly involved in and composite membranes with Nafion-filled interfiber voids. Benefiting from such structural features, the composite membrane exhibits high proton conductivity (0.315 S cm −1 at 80 C and 100% RH), low methanol permeability (0.69 × 10 −7 cm 2 S −1 ), excellent water absorption, thermal and dimensional stability, and single-cell performance. This study provides not only a valuable reference for the application of CC3 but also a new idea for establishment of proton transfer channels. K E Y W O R D S high proton conductivity, porous organic cage CC3, proton exchange membrane, SPES nanofibers

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Solution blown sulfonated poly(ether ether ketone) nanofiber–Nafion composite membranes for proton exchange membrane fuel cells

Abstract: The incorporation of SPEEK nanofibers into a Nafion matrix enhanced the performance of the composite membrane as a proton exchange membrane.

Cited by 64 publications

References 19 publications

Understanding methods of preparation and characterization of pore-filling polymer composites for proton exchange membranes: a beginner’s guide

Understanding methods of preparation and characterization of pore-filling polymer composites for proton exchange membranes: a beginner’s guide

A Review of the Fundamental Principles and Applications of Solution Blow Spinning

Enhancing proton conductivity of proton exchange membrane with SPES nanofibers containing porous organic cage

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