Development of sulfonated poly(ether ether ketone)/polyethersulfone
            <scp>‐</scp>
            crosslinked quaternary ammonium poly(ether ether ketone) bipolar membrane electrolyte via
            <scp>hot‐press</scp>
            approach for hydrogen/oxygen fuel cell

Daud, Syarifah Noor Syakiylla Sayed; Norddin, M. N. A. Mohd; Jaafar, Juhana; Sudirman, Rubita

doi:10.1002/er.6453

Cited by 14 publications

(4 citation statements)

References 60 publications

(155 reference statements)

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“…The FTIR spectrum is shown in Figure . There are obvious spikes at 1078 and 1010 cm –1 , which is attributed to the asymmetric and symmetrical stretching vibration of OSO . The N–S amide II vibration peak was observed at 1512 cm –1 , and the O–H wide peak at 3380 cm –1 became a narrow peak after grafting, and the central position of the peak shifted to 3417 cm –1 , which may be caused by the stretching vibration of −NH– after grafting .…”

Section: Resultsmentioning

confidence: 97%

“…The peak of 7.52 ppm indicates that the sulfonation reaction occurred successfully. 42 The new peaks at 9.0 and 7.65 ppm are attributed to the −NH− peak of SA grafted onto the −SO 2 − side-chain group and the proton peak of the chemical-shift skeleton benzene ring induced by it, 36 it can be inferred that SA has been successfully grafted.…”

Section: Resultsmentioning

confidence: 98%

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Side-Chain Grafting-Modified Sulfonated Poly(ether ether ketone) with Significantly Improved Selectivity for a Vanadium Redox Flow Battery

Wang

Wei

et al. 2023

Ind. Eng. Chem. Res.

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A sulfonated poly(ether ether ketone) (SPEEK) proton exchange membrane with side-chain grafted sulfamic acid (SA) was designed. The introduction of SA with an amphoteric functional group achieves the purpose of preventing the migration of vanadium ions in the case of a lossless proton conductive group (−SO3H), which is caused by the Donnan repulsion of a protonated −NH– group to a vanadium ion. At the same time, acid–base pairs and hydrogen bonds are formed between the sulfonated side-chain grafted secondary amine (−NH−) group and the sulfonic (−SO3H) group, which hinders the penetration of vanadium ions. The results show that the prepared SPEEK-SA-50 membrane has high proton conductivity (0.099 S cm–1) and vanadium ion selectivity (1.8 × 105 S min cm–3), and its selectivity is significantly improved compared with SPEEK (4.9 × 104 S min cm–3) and the Nafion 212 membrane (4.8 × 104 S min cm–3). Under the condition of 80 mA cm–2, the Coulombic efficiency (CE) of the vanadium redox flow battery with the SPEEK-SA-50 membrane is 95.45%, and the energy efficiency (EE) is 76.11%, which is better than that of the Nafion 212 membrane (CE: 86.39%; EE: 68.26%).

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 98%

Side-Chain Grafting-Modified Sulfonated Poly(ether ether ketone) with Significantly Improved Selectivity for a Vanadium Redox Flow Battery

Wang

Wei

et al. 2023

Ind. Eng. Chem. Res.

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“…6 In general, AEMs consist of a polymer backbone, immobilized ion functionalized charge groups, and mobile counter-ions. 7 Various AEMs preparation methods have been proposed, including solution casting, 8,9 pore-filling, 10 sol-gel, 11 hot pressing, 12 radiation-induced graft polymerization, 13 and electrospinning. 14 Solution casting is the most widely used membrane manufacturing method.…”

mentioning

confidence: 99%

Effect of Crosslinking on the Properties of QPVA/PDDA Anion Exchange Membranes for Fuel Cells Application

Samsudin

Hacker

2021

J. Electrochem. Soc.

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Anion exchange membranes (AEMs) consisting of quaternary ammonium poly(vinyl alcohol) (QPVA) and poly(diallyldimethylammonium chloride) (PDDA) were prepared by a solution casting method. The influence of the concentration of the chemical crosslinker on the properties and performance of AEMs was investigated. Morphology, chemical structures, thermal and mechanical properties of AEMs were characterized by SEM, FTIR, TGA, and UTM. The performance of AEMs was evaluated by water uptake, swelling degree, ion exchange capacity, and OH− conductivity measurement. The tensile strength, water uptake, and OH− conductivity of AEMs were enhanced with the increase of the crosslinker concentration. By introducing 12.5% glutaraldehyde (GA), the QPVA/PDDA AEMs achieved the highest tensile strength, water uptake, and OH− conductivity of 46.21 MPa, 90.6% and 53.09 ms cm−1 at ambient condition, respectively. The investigations show that crosslinked QPVA/PDDA AEMs are a potential candidate for anion exchange membrane fuel cells.

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“…39,40 The RSM optimization approach offers several advantages over traditional single parametric optimization approaches, such as the need for fewer experiments and experimental data offering optimized parameters as well as reduced material consumption, space, labor, and time of experimentation. 41,42 Besides, this approach tests the interaction effects of various variables by three-dimensional figures in different ranges. For RSM, the independent variables that influence the system-dependent variable (response value) are selected based on the researcher's intent and experience using the literature survey.…”

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confidence: 99%

Optimization and validation of process parameters via RSM for minimizing use of resources to generate electricity from a DEFC

Choudhary

Pramanik

2021

Int J Energy Res

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In this study, the response surface methodology (RSM) was applied to design the Box-Behnken design (BBD) experiments and optimize the interactive effects of major operating parameters of direct ethanol fuel cells (DEFCs) for achieving the maximum power density. The main effective operating parameters of DEFCs like ethanol concentration, anode electrocatalyst loading, and operating temperature were selected as independent variables in BBD while the power density was considered to be the response function under investigation. The Nafion 117 membrane as solid electrolyte and synthesized Pt-Ru-Re (1:1:0.5)/f-MWCNT as anode and commercial Pt/C HiSPEC as cathode electrocatalysts were used, respectively. The individual and combined effects of independent variables on the maximum power density of DEFC were also examined. A second-order model was established according to the RSM results and statistically validated by analysis of variance (ANOVA) to provide a satisfactory description of the experimental data. The maximum peak power density of 22.10 mW/cm 2 was obtained by RSM modeling and the same was validated experimentally using the optimum condition of a 2.03 M ethanol concentration, 1.14 mg/cm 2 anode electrocatalyst loading, and 79.48 C operating temperature. The validation of the model showed that the experimentally measured value of the highest power density achieved under optimized conditions (21.53 mW/cm 2 ) was very close to the computed value (22.10 mW/cm 2 ) by the model. The optimization results via the RSM demonstrated that the power density of DEFC was significantly affected by operating cell temperature, followed by anode electrocatalyst loading and ethanol concentration.

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Development of sulfonated poly(ether ether ketone)/polyethersulfone ‐ crosslinked quaternary ammonium poly(ether ether ketone) bipolar membrane electrolyte via hot‐press approach for hydrogen/oxygen fuel cell

Cited by 14 publications

References 60 publications

Side-Chain Grafting-Modified Sulfonated Poly(ether ether ketone) with Significantly Improved Selectivity for a Vanadium Redox Flow Battery

Side-Chain Grafting-Modified Sulfonated Poly(ether ether ketone) with Significantly Improved Selectivity for a Vanadium Redox Flow Battery

Effect of Crosslinking on the Properties of QPVA/PDDA Anion Exchange Membranes for Fuel Cells Application

Optimization and validation of process parameters via RSM for minimizing use of resources to generate electricity from a DEFC

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