Semi-interpenetrating network anion exchange membranes based on quaternized polyvinyl alcohol/poly(diallyldimethylammonium chloride)

Du, Xinming; Zhang, Hongyu; Yuan, Yongjiang; Wang, Zhe

doi:10.1016/j.gee.2020.06.015

Cited by 24 publications

(14 citation statements)

References 47 publications

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“…This can be confirmed from the increase in hydroxide conductivity in Fig 8a. Figure 4 illustrates a proposed model of the chemical structure of PV/PDD, and QPV/PDD AEMs according to the FTIR spectra and the literature (Du et al, 2020;Samsudin & Hacker, 2019). The physical crosslinking between PVA or QPVA chains are formed by heat treatment (annealing).…”

Section: Chemical Structurementioning

confidence: 99%

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Poly(vinyl alcohol)-Based Anion Exchange Membranes for Alkaline Direct Ethanol Fuel Cells

Samsudin

Wolf

Roschger

et al. 2021

Int. J. Renew. Energy Dev.

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Crosslinked anion exchange membranes (AEMs) made from poly(vinyl alcohol) (PVA) as a backbone polymer and different approaches to functional group introduction were prepared by means of solution casting with thermal and chemical crosslinking. Membrane characterization was performed by SEM, FTIR, and thermogravimetric analyses. The performance of AEMs was evaluated by water uptake, swelling degree, ion exchange capacity, OH- conductivity, and single cell tests. A combination of quaternized ammonium poly(vinyl alcohol) (QPVA) and poly(diallyldimethylammonium chloride) (PDDMAC) showed the highest conductivity, water uptake, and swelling among other functional group sources. The AEM with a combined mass ratio of QPVA and PDDMAC of 1:0.5 (QPV/PDD0.5) has the highest hydroxide conductivity of 54.46 mS cm-1. The single fuel cell tests with QPV/PDD0.5 membrane yield the maximum power density and current density of 8.6 mW cm-2 and 47.6 mA cm-2 at 57 °C. This study demonstrates that PVA-based AEMs have the potential for alkaline direct ethanol fuel cells (ADEFCs) application.

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Section: Chemical Structurementioning

confidence: 99%

“…The water uptake was very high, however, resulting in excessive swelling. Du et al (2020) mixed QPVA, poly(diallyldimethylammonium chloride) and GA to form a semi-interpenetrating network. The hydroxide conductivity obtained was 29.1 mS.cm -1 (30°C) with a high swelling volume of 115%.…”

Section: Introductionmentioning

confidence: 99%

Poly(vinyl alcohol)-Based Anion Exchange Membranes for Alkaline Direct Ethanol Fuel Cells

Samsudin

Wolf

Roschger

et al. 2021

Int. J. Renew. Energy Dev.

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“…Du et al fabricated quaternized poly(2,6-dimethyl-1,4-phenylene oxide) electrospun (QPPONF)/poly(vinyl alcohol) anion exchange membrane. By varying the ratio between QPPONF and PVA, it was found that the addition of the ratio of QPPONF to PVA increased the ion conductivity of AEMs (Du et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

QPVA-Based Electrospun Anion Exchange Membrane for Fuel Cells

Samsudin

Hacker

2023

Int. J. Renew. Energy Dev.

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The anion exchange membrane is one of the core components that play a crucial and inseparable role in alkaline anion exchange membrane fuel cells. Anion exchange membranes (AEMs) were prepared from quaternary ammonium poly(vinyl alcohol) (QPVA) by an electrospinning method. QPVA was used both as material for electrospun fiber mats and as filler for the inter-fiber void matrix. The objective of this work is to investigate the influence of the inter-fibers void matrix filler concentration on the properties and performance of eQPVA-x AEMs. FTIR spectra were used to identify the chemical structures of the AEMs. The primary functional groups of PVA and quaternary ammonium-based ion conducting cation were detected. The surface morphology of QPVA nanofiber mats and eQPVA-x AEMs was observed using SEM. Electrospun nanofiber structures of QPVA with an average size of 100.96 nm were observed in SEM pictures. The ion exchange capacity, swelling properties, water uptake, and OH-ions conductivity were determined to evaluate the performance of eQPVA-x AEMs. By incorporating the QPVA matrix of 5 wt.% concentration, the eQPVA-5.0 AEMs attained the highest ion exchange capacity, water uptake, swelling properties, and OH− conductivity of 0.82 mmol g−1, 25.5%, 19.9%, and 2.26 m×s cm−1, respectively. Electrospun QPVA AEMs have the potential to accelerate the development of alkaline anion exchange membrane fuel cells.

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“…33 Du et al prepared semi-interpenetrating AEM b a s e d o n q u a t e r n i z e d P V A a n d p o l y -(diallyldimethylammonium chloride). 37 Herranz et al applied PVA and poly(benzimidazole) (PBI) blend membranes in alkaline direct ethanol fuel cells. 38 Besides fuel cells, PVAbased membranes have also been used in supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Dual Cross-Linked Poly(vinyl alcohol)-Based Anion Exchange Membranes with High Ion Selectivity for Vanadium Flow Batteries

Liu

Shi

et al. 2023

ACS Appl. Polym. Mater.

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As a widely used, low-cost, and environmentally friendly carbohydrate polymer, poly(vinyl alcohol) (PVA) is employed to prepare dual cross-linked anion exchange membranes (AEMs) for vanadium flow batteries (VFBs). Tertiary amine group functionalized PVA (i.e., poly(vinyl acetal) (PVAc)) is first synthesized via the acetalization reaction between 4dimethylaminobenzaldehyde (DMABA) and PVA. Then (5-bromopentyl)-trimethylammonium bromide (BPTMA) is used as the quaternary ammonium reagent, while α,α′-dibromo-p-xylene (DBPX) is adopted as the first cross-linker. Meanwhile, glutaraldehyde (GA) is used as the second cross-linker to further improve the dimensional stability of AEMs. The formed dual cross-linked PVAc-BPTMA-DBPX-GA membranes display enhanced sulfonic acid (SA) uptake and low area resistance (AR), and maintain low VO 2+ permeability and suitable mechanical strength simultaneously. For example, the PVAc-0.5BPTMA-0.5DBPX-GA membrane shows a low AR of 0.27 Ω cm 2 and an ultralow vanadium ion permeability of 8.09 × 10 −8 cm 2 min −1 . Therefore, the above membrane exhibits a significant ion selectivity of 5.95 × 10 5 S min cm −3 , which is nearly 2 orders of magnitude higher than that of Nafion 115 (i.e., 6.66 × 10 3 S min cm −3 ). The VFB based on PVAc-0.5BPTMA-0.5DBPX-GA displays a higher energy efficiency of 85.2% at 100 mA cm −2 than the cell with Nafion 115 (71.1%). Meanwhile, the battery also maintains a stable performance in a long-term operation of 150 cycles.

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Semi-interpenetrating network anion exchange membranes based on quaternized polyvinyl alcohol/poly(diallyldimethylammonium chloride)

Cited by 24 publications

References 47 publications

Poly(vinyl alcohol)-Based Anion Exchange Membranes for Alkaline Direct Ethanol Fuel Cells

Poly(vinyl alcohol)-Based Anion Exchange Membranes for Alkaline Direct Ethanol Fuel Cells

QPVA-Based Electrospun Anion Exchange Membrane for Fuel Cells

Dual Cross-Linked Poly(vinyl alcohol)-Based Anion Exchange Membranes with High Ion Selectivity for Vanadium Flow Batteries

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