A novel anion exchange membrane based on silicone/polyphenylene oxide with excellent ionic conductivity for <scp>AEMFC</scp>

Liu, Qian; Wang, Zhe; Sui, Zhiyin; Shui, Tianen; Wang, Song

doi:10.1002/pat.5721

Cited by 3 publications

(3 citation statements)

References 50 publications

(75 reference statements)

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“…So, recently, a lot of attention has been paid to using PPO-based membranes, especially quaternized PPO (QPPO), in AFC systems [ 165 , 166 , 167 , 168 , 169 , 170 ]. To further improve the physiochemical properties of the QPPO AEM membrane by including various polymeric and inorganic materials with different concepts [ 166 , 171 , 172 , 173 , 174 ]. In this connection, the efficient properties of cellulose have been modified with QPPO.…”

Section: Developments Of Anion Exchange Membranes With Modified Cellu...mentioning

confidence: 99%

Recent Developments on Bioinspired Cellulose Containing Polymer Nanocomposite Cation and Anion Exchange Membranes for Fuel Cells (PEMFC and AFC)

Thangarasu

2022

Polymers

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Hydrogen fuel cell (FC) technologies are being worked on as a possible replacement for fossil fuels because they produce a lot of energy and do not pollute the air. In FC, ion-exchange membranes (IEMs) are the vital components for ion transport between two porous electrodes. However, the high production cost of commercialized membranes limits their benefits. Various research has focused on cellulose-based membranes such as IEM with high proton conductivity, and mechanical, chemical, and thermal stabilities to replace the high cost of synthetic polymer materials. In this review, we focus on and explain the recent progress (from 2018 to 2022) of cellulose-containing hybrid membranes as cation exchange membranes (CEM) and anion exchange membranes (AEM) for proton exchange membrane fuel cells (PEMFC) and alkaline fuel cells (AFC). In this account, we focused primarily on the effect of cellulose materials in various membranes on the functional properties of various polymer membranes. The development of hybrid membranes with cellulose for PEMFC and AFC has been classified based on the combination of other polymers and materials. For PEMFC, the sections are associated with cellulose with Nafion, polyaryletherketone, various polymeric materials, ionic liquid, inorganic fillers, and natural materials. Moreover, the cellulose-containing AEM for AFC has been summarized in detail. Furthermore, this review explains the significance of cellulose and cellulose derivative-modified membranes during fuel cell performance. Notably, this review shows the vital information needed to improve the ion exchange membrane in PEMFC and AFC technologies.

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Section: Developments Of Anion Exchange Membranes With Modified Cellu...mentioning

confidence: 99%

Recent Developments on Bioinspired Cellulose Containing Polymer Nanocomposite Cation and Anion Exchange Membranes for Fuel Cells (PEMFC and AFC)

Thangarasu

2022

Polymers

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“…Polysulfone [12], poly(arylene ether ketone) [13], polystyrene [14], polybenzimidazoles [15], poly (2,6-dimethyl-1,4-phenylene oxide) [16] are among those polymer material that are often studied. However, it is typically necessary for them to undergo an intricate quaternization procedure involving chloromethylation of benzene and quaternization of benzyl chloride.…”

Section: Introductionmentioning

confidence: 99%

Poly (vinyl alcohol)/Polyquaternium-7 Anion Exchange Membranes for Alkaline Polymer Electrolyte Fuel Cells

Samsudin,

Abdullah,

Nasher

et al. 2024

E3S Web Conf.

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Anion exchange membrane (AEM) is one of the critical components in Alkaline polymer electrolyte fuel cells. This is due to the crucial function in facilitating the process of hydroxide ion conduction. A series of anion exchange membranes (AEMs) were synthesized using poly (vinyl alcohol) (PVA) as the backbone polymer and polyquaternium-7 as the copolymer that provides a hydroxide conducting group source. Thermal and chemical crosslinking was introduced to reduce the excessive swelling of the membranes. The effect of the PVA/PQ7 mass ratio on AEMs performance was investigated. The FTIR study reveals that the spectra exhibit the primary functional groups of PVA, polyquaternium-7, and chemical crosslinking. According to the SEM image, the PVA/PQ7 membranes have smooth and uniform morphology. Water uptake and swelling degree increased with increasing mass ratio of polyquaternium-7 to PVA. AEMs with a polyquaternium-7 to PVA ratio of 0.5 provide the highest IEC and hydroxide conductivity values of 1.52 mmol/g and 9.26 mS/cm at room temperature, respectively.

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“…Most previous studies have measured the ionic conductivity of fully hydrated AEMs. [23][24][25][26] Liu et al [23] reported an organicinorganic composite AEM and investigated the effects of temperature and IEC on its ionic conductivity in deionized water. Yang et al [24] measured the ionic conductivity of novel AEMs in water at different temperatures and found that hydroxide conductivity could reach as high as 6.5 S m −1 at 80 °C.…”

Section: Introductionmentioning

confidence: 99%

Anion Exchange Membranes for Fuel Cells: Equilibrium Water Content and Conductivity Characterization

Wang

Chen

Han

et al. 2023

Adv Funct Materials

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The ionic conductivity of anion exchange membranes (AEMs) directly determines the performance of anion exchange membrane fuel cells (AEMFCs), which highly depends on the hydration level of the membrane. A better understanding of the relationship between hydration level and membrane ionic conductivity is essential for membrane development and for water and thermal management analyses of AEMFCs. In this study, the effects of water activity and temperature on water uptake, equilibrium water content, and ionic conductivity of three high‐performance AEMs (Alkymer, Orion, and Pention) are quantitatively characterized via the designed experiments. The results show that Orion exhibits the lowest water uptake and highest ionic conductivity among the three membranes at high water activity and Alkymer exhibits good water‐retention capability and the highest ionic conductivity at low water activity. Empirical equations combining water activity and equilibrium water content are proposed based on fitted experimental data to define the hydration level. Empirical equations combining ionic conductivity, equilibrium water content, and temperature are fitted to illustrate the relationship between ionic conductivity and hydration level. The findings of this study can provide solid guidelines and support for the future experimental characterization and water and thermal management analyses of AEMFCs.

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A novel anion exchange membrane based on silicone/polyphenylene oxide with excellent ionic conductivity for AEMFC

Cited by 3 publications

References 50 publications

Recent Developments on Bioinspired Cellulose Containing Polymer Nanocomposite Cation and Anion Exchange Membranes for Fuel Cells (PEMFC and AFC)

Recent Developments on Bioinspired Cellulose Containing Polymer Nanocomposite Cation and Anion Exchange Membranes for Fuel Cells (PEMFC and AFC)

Poly (vinyl alcohol)/Polyquaternium-7 Anion Exchange Membranes for Alkaline Polymer Electrolyte Fuel Cells

Anion Exchange Membranes for Fuel Cells: Equilibrium Water Content and Conductivity Characterization

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