Rational design of microporous polybenzimidazole framework for efficient proton exchange membrane fuel cells

Abstract

The preparation of polymeric anhydrous proton conducting membrane is critical to the development of high-temperature proton-exchange membrane (HT-PEM) for the use in fuel cell and remains a significant scientific challenge...

Constructing unique carboxylated proton transport channels via the phosphoric acid etching of a metal–organic framework in a crosslinked branched polybenzimidazole

“…reported in our previous work 20,27,32,33,43 and the work in recent years. 13,34,36 This journal is © The Royal Society of Chemistry 2022…”

“…So far, some strategies have been proposed to construct proton transfer channels, for instance, through the introduction of inorganic 30,31 (e.g., porous SiO 2 and CNTs) or organic 27,32,33 (e.g., MOFs and CTFs) nanoporous materials into membranes; the preparation of membranes with large free volumes by introducing rigid twisted molecular structures. 10,28,34 The introduction of porous structures in PA-PBI membranes has drawn much attention in recent years, as it represents an effective strategy by which to improve the fuel cell performance of a membrane by adjusting the PA uptake of the PA in the membrane. [35][36][37][38][39] However, in spite of the great improvements that have been achieved in terms of conductivity and power density, the durability of the resulting membranes may not be guaranteed.…”

Thermal-Tolerant CdPS3-Polybenzimidazole Membranes with High Proton Conductivity

“…Recently, high-temperature PEMs were attempted mainly based on polymers. − Phosphoric acid (PA)-doped polybenzimidazole (PA/PBI) membranes are widely studied due to their high thermal stability. − To reduce the cost, the composite membranes prepared by introducing N-heterocyclic groups, like pyrrolidone, quaternary ammonium, tertiary amine groups, and imidazolium on the side chain, into polymers have been proposed . However, the polymeric membranes are still challenged by relatively low proton conductivities and/or limited thermal stability.…”

Recent Advances on Perovskite Electrocatalysts for Water Oxidation in Alkaline Medium

“…Producing H 2 by electrocatalytic water splitting could not only fulfill the goal of making the best use of green energy such as solar energy but also realize zero emission of carbon substances. The generated H 2 can be subsequently stored and used as the feedstock to produce high-valued chemicals. , Furthermore, the generated H 2 can also be used in fuel cells to produce electricity. , …”