Partially crosslinked comb-shaped PPO-based anion exchange membrane grafted with long alkyl chains: Synthesis, characterization and microbial fuel cell performance

Mohanty, Aruna Kumar; Song, Young Eun; Jung, Boram; Kim, Eun Jung; Kim, Nowon; Paik, Hyun‐jong

doi:10.1016/j.ijhydene.2020.07.093

Cited by 35 publications

(19 citation statements)

References 39 publications

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“…Poly (2,6-dimethyl-1,4-Phenylene Oxide) (PPO) is considered a good membrane candidate due to its excellent physicochemical properties, such as high transition temperature (Tg), excellent mechanical strength and good chemical stability [24][25][26][27]. PPO-based AEMs are usually prepared in three steps, namely, chloromethylation (or bromination), quaternisation and hydroxide ion exchange.…”

Section: Introductionmentioning

confidence: 99%

Highly conductive partially cross-linked poly(2,6-dimethyl-1,4-phenylene oxide) as anion exchange membrane and ionomer for water electrolysis

Feng

Esteban

Gupta

et al. 2021

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 99%

Highly conductive partially cross-linked poly(2,6-dimethyl-1,4-phenylene oxide) as anion exchange membrane and ionomer for water electrolysis

Feng

Esteban

Gupta

et al. 2021

International Journal of Hydrogen Energy

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“…Microphase separation can be induced by using block copolymers and long side chain grafted polymers, where the polarity difference between hydrophilic and hydrophobic blocks or between backbone and side chains can drive ionic groups to self-aggregate and form large hydrophilic ion clusters. − Mohanty et al designed a comb-shaped, PPO-based AEM (IEC = 1.96 mmol g –1 ) by placing a long hydrophobic alkyl spacer between main chain and the cationic groups; the resultant AEM showed a distinct microphase separation, and its conductivity was 67 mS cm –1 . Gao et al designed an orderly branched AEM, where large ionic domains (11.4 nm) were observed due to well-developed microphase separation, and the AEM showed an impressive conductivity (119 mS cm –1 at 80 °C).…”

Section: Introductionmentioning

confidence: 99%

Hydrophilic–Hydrophobic Bulky Units Modified Anion Exchange Membranes for Fuel Cell Application

Yuan

et al. 2022

ACS Sustainable Chem. Eng.

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The hydroxide conductivity and alkaline stability play a significant role in the application of an anion exchange membranes (AEMs) fuel cell. These high performances are closely related to the structure of the polymer. Side-chain structure is commonly used to construct microphase separation. On this basis, a new strategy is to incorporate a rigid bulky structure into an AEM to break chain packing and reduce resistance against hydroxide ion transport. In this work, rigid bulky hydrophilic–hydrophobic side-chain grafted, ether-free poly(biphenyl indole) (PBN) AEMs are designed and prepared by chemical incorporation of hydrophilic bulky cyclodextrin and hydrophobic bulky adamantane onto the PBN backbone. The enhanced driving force of microphase separation and the enlarged free volume can make for high hydroxide conductivity. The fabricated AEM with an ion exchange capacity (IEC) of 1.81 mmol g–1 shows a conductivity of 122.0 mS cm–1 at 80 °C, which can be retained by 90% after treatment of the AEM in a 1 M NaOH solution at 80 °C for 1008 h. Its single H2/O2 fuel cell yields a peak power density of 603 mW cm–2 at 60 °C; the fuel cell can maintain 70.2% of its initial voltage after operating for 30 h. This strategy provides a new and effective route for the preparation of AEMs with superior performance.

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“…Mohanty et al systematically studied the alkaline stability of different types of polymer backbones. The results show that the presence of strong electronic groups or heteroatoms will accelerate the degradation of the skeleton and reduce the stability of the skeleton. − Because the full-carbon chain skeleton does not contain electron-withdrawing atoms or heteroatoms, it is used as the main candidate material for the anion exchange membrane skeleton. At present, common full-carbon chain skeletons include biphenyl, polyethylene, SEBS, etc. − …”

Section: Introductionmentioning

confidence: 99%

Poly(terphenylene) and Bromohexylated Polystyrene-b-poly(ethylene-co-butene)-b-polystyrene Cross-Linked Anion Exchange Membrane with Excellent Comprehensive Performance

Wang

Sang

et al. 2022

Energy Fuels

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Using a quaternization reaction to cross-link the soft bromohexylated polystyrene-b-poly(ethylene-co-butene)-b-polystyrene (SEBS-C6-Br) skeleton with the more brittle quaternized poly(triphenylpiperidine) skeleton (Qr-m-PTP), we prepare a nQr-m-PTP-c-SEBS-C6 composite membrane. The research results show that the conductivity of the 0.68Qr-m-PTP-c-SEBS-C6 membrane can reach 91.8 mS/cm at 80 °C, and the OH– conductivity only decreases by 5.18% after immersing in 4 M NaOH for 1400 h. Both the dimensional stability and mechanical properties have been enhanced. The microphase separation channels after the two frameworks are cross-linked and promote the ion conductivity of the anion exchange membrane, and the high degree of cross-linking also has a good inhibitory effect on the swelling of the membrane. This kind of cross-linked membrane is useful in alkaline membrane fuel cells.

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Partially crosslinked comb-shaped PPO-based anion exchange membrane grafted with long alkyl chains: Synthesis, characterization and microbial fuel cell performance

Cited by 35 publications

References 39 publications

Highly conductive partially cross-linked poly(2,6-dimethyl-1,4-phenylene oxide) as anion exchange membrane and ionomer for water electrolysis

Highly conductive partially cross-linked poly(2,6-dimethyl-1,4-phenylene oxide) as anion exchange membrane and ionomer for water electrolysis

Hydrophilic–Hydrophobic Bulky Units Modified Anion Exchange Membranes for Fuel Cell Application

Poly(terphenylene) and Bromohexylated Polystyrene-b-poly(ethylene-co-butene)-b-polystyrene Cross-Linked Anion Exchange Membrane with Excellent Comprehensive Performance

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