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

Abstract

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

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

“…(a) Polarization and power density curves of the QPTPSF-15 membrane. (b) Comparison of the properties of QPTPSF-15 membrane with recently published research and commercial membranes in the field. ,,,,,,− …”

“…In summary, adjusting the polymer’s morphological structure and constructing ion transport channels within the membrane is one of the measures to efficiently improve the ionic conductivity and stability of AEMs. , Hence, in this work, the chemically stable p -terphenyl without an ether bond was selected as the backbone structure of the polymer membrane and the piperidinium cation as the ion-transporting unit to construct novel high-performance AEMs. − To achieve this, in designing the molecular chain structure, a large thiophene ring was introduced to take advantage of the hydrophobicity, which led to the construction of a hydrophilic/hydrophobic microphase-separated structure of the membrane. Additionally, the thiophene ring is part of a heterocyclic aromatic hydrocarbon that exhibits significant spatial site resistance.…”