Enhanced properties of quaternized graphenes reinforced polysulfone based composite anion exchange membranes for alkaline fuel cell

Lingdi, Liu; Tong, Chenning; He, Yonghong; Zhao, Yanxu; Lü, Changli

doi:10.1016/j.memsci.2015.03.077

Cited by 117 publications

(35 citation statements)

References 62 publications

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“…There is another mechanism, which we term ionic cluster dispersion, which asserts that the incorporation of NMs facilitates the creation of interconnected ion conducting pathways within the membrane matrix of nanocomposite IEMs. [39][40][41][42] It has been observed that the addition of NMs results in better distribution of ionic clusters in nanocomposite IEMs 43,44 (see Fig. 3).…”

Section: The Role Of Nms In Iems: Proposed Mechanismsmentioning

confidence: 89%

Review of nanomaterials-assisted ion exchange membranes for electromembrane desalination

et al. 2018

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In order to address the increasing demand for fresh water due to accelerated social and economic growth in the world, water treatment technologies, such as desalination, have been rapidly developed in attempts to safeguard water security. Electromembrane desalination processes, such as electrodialysis and membrane capacitive deionization, belong to a category of desalination technologies, which involve the removal of ions from ionic solutions with the use of electrically charged membranes termed ion exchange membranes. The challenges associated with ion exchange membranes have drawn the attention of many researchers, who have investigated various approaches to enhance their properties. The incorporation of nanomaterials is one of the popular approaches employed. Much research on nanomaterials incorporated ion exchange membranes was conducted for the purpose of fuel cell applications rather than electromembrane desalination. This review reports on the advances in nanomaterials incorporated ion exchange membranes applicable to desalination. The nanomaterials employed in ion exchange membranes fabrication include carbon nanotubes, graphene-based nanomaterials, silica, titanium (IV) oxide, aluminum oxide, zeolite, iron (II, III) oxide, zinc oxide, and silver. The aims of this article are to provide a snap shot of the current status of nanomaterials incorporation in ion exchange membranes, to assess the status of nanomaterials-facilitated ion exchange membranes research for electromembrane desalination, and to stimulate progress in this area.

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Section: The Role Of Nms In Iems: Proposed Mechanismsmentioning

confidence: 89%

Review of nanomaterials-assisted ion exchange membranes for electromembrane desalination

et al. 2018

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“…Movil et al incorporated PDDA-functionalized GO into PVA-based composite membranes and observed conductivity of 21 mS/cm at 80 °C, improved thermo-mechanical stability, and AAEMFC power density of 17 mW/cm 2 [38]. Liu et al prepared composite membranes by incorporating quaternized graphene into aryl polymers, resulting in high Young's modulus (5240 MPa) and tensile strength (205 MPa), and bicarbonate conductivity of 18.7 mS/cm at 80°C [39]. Zarrin et al prepared functionalized GO with quaternary ammonium groups and made a composite with PBI.…”

Section: Introductionmentioning

confidence: 99%

Alkaline anion exchange membranes based on KOH-treated multilayer graphene oxide

Bayer

Cunning

Selyanchyn

et al. 2016

Journal of Membrane Science

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A novel class of alkaline anion exchange membrane (AAEM) is presented, in the form of KOHmodified multilayer graphene oxide paper (GO KOH). Such membranes can be easily fabricated at large scale with varying thickness using conventional filtration techniques, and have high tensile strength (24.5 MPa). However, a large degree of swelling is observed. SEM investigations show that the morphology of GO changes after KOH-treatment, whilst XPS measurements and XRD analysis confirm successful chemical modification. The hydrogen gas permeability is several orders of magnitude lower than conventional polymer-based ionomer membranes. The maximum anion conductivity is 6.1 mS/cm at 70°C, and the dominant charge carrier is confirmed to be OHby utilization of anion and proton-conducting blocking layers. The ion exchange capacity is 6.1 mmol/g, measured by titration. A water-mediated reverse Grotthuss-like mechanism is proposed as the main diffusion mode of OHions. Finally, a prototype AAEM fuel cell is fabricated using a GO KOH membrane, confirming the applicability to real systems.

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“…In the case of qPPO/DG-Cel, the highest

of 0.087 S cm −1 , which is 8.7 and 1.5 times higher than pristine qPPO (0.010 S cm − 1 ) and qPPO/D-Cel7 (0.058 S cm − 1 ), was achieved at room temperature even with the lower IEC compared to qPPO/D-Cel composites. Three main reasons can be inferred: (1) high basicity of DG, better solvation by water [ 49 ], (2) less dense structure leads to higher WU, thus, improves the ionic conductivity because water is an ion transportation medium [ 16 ], (3) distinct phase separation of hydrophilic/hydrophobic domains that facilitates hydroxyl ion transport confirmed through the TEM and AFM images [ 65 , 66 ]. It was reported that the ion exchange membrane could enhance the ionic conductivity by establishing well-connected phase separation despite the low IEC [ 67 ].…”

Section: Resultsmentioning

confidence: 99%

A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell Applications

et al. 2020

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In this study, composite anion exchange membranes (AEMs) were synthesized by cross-linking poly(phenylene oxide) (PPO) with cellulose functionalized by 1,4-diazabicyclo[2.2.2]-octane (DABCO) or di-guanidine (DG). The structural and morphological characteristics of the synthesized AEMs were characterized by FTIR, 1H-NMR, SEM, TEM, and AFM, while their performance was evaluated in terms of ionic conductivity, water uptake, ion exchange capacity, and tensile strength with respect to the loading of the quaternized cellulose in the quaternized PPO (qPPO) matrix. The composite AEMs exhibited considerably enhanced mechanical and alkaline stability as well as good anion conductivity. The composite AEM with 7 wt% of cellulose functionalized with DG in the qPPO matrix (qPPO/DG-Cel7) exhibited a maximum hydroxide conductivity of 0.164 S cm−1. Furthermore, a urea/O2 fuel cell prepared using this composite membrane showed a maximum power density of 12.3 mW cm−2. The results indicated that the cellulose-based composite membranes showed a satisfactory performance in alkaline fuel cell applications.

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Enhanced properties of quaternized graphenes reinforced polysulfone based composite anion exchange membranes for alkaline fuel cell

Cited by 117 publications

References 62 publications

Review of nanomaterials-assisted ion exchange membranes for electromembrane desalination

Review of nanomaterials-assisted ion exchange membranes for electromembrane desalination

Alkaline anion exchange membranes based on KOH-treated multilayer graphene oxide

A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell Applications

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