Four-arm star-shaped high-performance poly(aryl piperidine) anion exchange membranes for fuel cells

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(11), P. 6341 - 6350

Published: Jan. 1, 2024

Anion exchange membrane fuel cells (AEMFCs) are a new generation of energy conversion technology that excels proton in terms oxygen reduction kinetics.

Language: Английский

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Reducing hydroxide transport resistance by introducing high fractional free volume into anion exchange membranes

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 701, P. 122769 - 122769

Published: April 12, 2024

Language: Английский

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Preparation of highly conductive anion exchange membranes by introducing dibenzothiophene monomer into the polymer backbone

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 602, P. 234314 - 234314

Published: March 22, 2024

Language: Английский

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Di-piperidinium side chain functionalized poly(anthracene-co-p-terphenyl piperidinium) anion exchange membranes with microphase separation structure

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 707, P. 122998 - 122998

Published: June 15, 2024

Language: Английский

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Excellently conductive fluorinated poly (acenaphthylenyl aryl piperidinium) anion exchange membranes with robust dimensional stability

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 700, P. 122704 - 122704

Published: March 27, 2024

Language: Английский

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In-Situ Gradient Cross-Linking in Anion Exchange Membranes for Water Electrolyzers

Chemistry of Materials, Journal Year: 2024, Volume and Issue: 36(11), P. 5720 - 5729

Published: May 24, 2024

Anion exchange membrane water electrolyzers (AEMWEs) have emerged as a promising method for the efficient and cost-effective production of hydrogen, widely seen ideal energy source. However, practical application AEMWEs is hindered by challenge maintaining both high conductivity dimensional stability in anion membranes (AEMs), particularly after prolonged exposure to alkaline solution. Herein, we propose gradient cross-linking strategy improve AEMs while preserving conductivity. The self-cross-linked are developed implementing slow ring-opening epoxides environments. This can gradually compensate physical failure induced absorption expansion tensile stress cross-linked did not decrease but instead increased even 30 day aging treatment. extent improvement has been demonstrated be effectively regulated concentration. shows potential addressing conductivity–dimensional trade-off often observed AEMs.

Language: Английский

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Hydrophobic Thiophene Unit Modification for the Construction of Novel Anion Exchange Membranes for High-Speed Transport of Ion Channels

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(32), P. 12126 - 12134

Published: July 30, 2024

In this work, the "one-pot method" involving green and efficient ultrastrong acid catalysis was used to polymerize a series of anion exchange membranes (AEMs) without aryl ether bonds, which required no complex postprocessing steps in line with goal sustainable research, as method had low cost clean synthesis. Moreover, by doping hydrophobic thiophene groups hydrophilic piperidinium cationic into AEMs create high-speed ionic channels while inhibiting swelling, we provide solution "trade-off" problem between conductivity dimensional stability. Multiple morphological analyses confirmed that interconnected ion transport created structure accelerated OH– up 152.57 mS cm–1 at 80 °C. At same time, synthesized membrane showed optimum stability (WU 56.89% SR 18.87%). addition, excellent chemical stability, maintaining 90.78% retention (80 °C) after immersion 3 M NaOH for 1000 h. final single-cell test °C), QPTPSF-15 best overall performance achieved peak power density 536 mW cm–2. This strategy preparation high-performance addresses limitations synthesis current provides approach design development fuel cells.

Language: Английский

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Low-density phenyl content π-π stacking units based ionomers and membranes to improve power density for fuel-cells

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 632, P. 236397 - 236397

Published: Feb. 3, 2025

Language: Английский

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Remarkable Conductivity and Durability of Anion Exchange Membrane With Poly(Fluorene‐Terphenyl Piperidinium) Incorporating Graphene Oxide

International Journal of Energy Research, Journal Year: 2025, Volume and Issue: 2025(1)

Published: Jan. 1, 2025

We present a series of organic–inorganic composite membranes containing graphene oxide (GO) and quaternized poly(fluorene‐terphenyl piperidinium) (QPFTP) polymer to enhance ion conductivity physicochemical properties. Utilizing the hydrophilic functional groups robust support GO, membrane accomplishes improved exchange capacity (IEC), swelling ratio, water uptake, electrochemical performance. The interaction between chains facilitated by interface ammonium on oxygen filler support, promotes hydrogen bond formation. Based our experiments results, it was proven that introduction GO improves alkaline stability membrane, optimal content confirmed be 0.7 wt%. Consequently, QPFTP‐GO‐0.7 reaches 198.2 mS cm −1 , demonstrating superior performance compared pristine (126.5 ). Furthermore, single cell achieves power density 347.6 mW −2 in an H 2 /O environment at 60°C. findings from this research are expected contribute advancement anion (AEM) technology, offering insights into design development next‐generation for sustainable energy applications.

Language: Английский

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Pyrene containing, highly conductive and robust poly (aryl piperidinium) anion exchange membranes for fuel cell applications

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: unknown, P. 124028 - 124028

Published: March 1, 2025

Language: Английский

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