Results 11 to 20 of about 5,752 (206)

Experimental Analysis of Catalyst Layer Operation in a High-Temperature Proton Exchange Membrane Fuel Cell by Electrochemical Impedance Spectroscopy

Energies, 2023
High-temperature proton exchange membrane fuel cells (HT-PEMFC) directly convert hydrogen and oxygen to produce electric power at a temperature significantly higher than conventional low-temperature fuel cells.
Andrea Baricci, Andrea Casalegno
doaj   +1 more source

Proton Selective Nanoporous Atomically Thin Graphene Membranes for Vanadium Redox Flow Batteries. [PDF]

Adv Mater
A scalable high‐performance proton‐exchange‐membrane architecture is demonstrated that integrates monolayer CVD graphene with Ar plasma‐engineered Angstrom‐scale proton‐selective pores, stacked to mitigate non‐selective defects, and interfaced with an ultrathin (≈300 nm) polybenzimidazole layer sandwiched between two Nafion 211 sheets.
Chaturvedi P, Cheng P, Hus SM, Coupin M, Li AP, Warner J, Boutilier MSH, Kidambi PR.   +7 more
europepmc   +2 more sources

Modifications on Promoting the Proton Conductivity of Polybenzimidazole-Based Polymer Electrolyte Membranes in Fuel Cells

Membranes, 2021
Hydrogen-air proton exchange membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs) are excellent fuel cells with high limits of energy density.
Junyu Chen, Jiamu Cao, Rongji Zhang, Jing Zhou, Shimin Wang, Xu Liu, Tinghe Zhang, Xinyuan Tao, Yufeng Zhang   +8 more
doaj   +1 more source

KOH-doped Porous Polybenzimidazole Membranes for Solid Alkaline Fuel Cells

Energies, 2020
In this study the preparation and properties of potassium hydroxide-doped meta-polybenzimidazole membranes with 20−30 μm thickness are reported as anion conducting polymer electrolyte for application in fuel cells. Dibutyl phthalate as porogen
Jong-Hyeok Park, Jin-Soo Park
doaj   +1 more source

Enhancement of the Green H₂ Production by Using TiO₂ Composite Polybenzimidazole Membranes

Nanomaterials, 2022
This study reports the hydrogen production using TiO2 based composite polybenzimidazole membranes through the SO2 depolarized electrolysis that requires lower energy input than the direct water electrolysis.
Sergio Díaz-Abad, Manuel A. Rodrigo, Cristina Sáez, Justo Lobato   +3 more
doaj   +1 more source

Effect of Organo-Silanes Structure on the Properties of Silane-Crosslinked Membranes Based on Cardo Polybenzimidazole PBI-O-PhT

Membranes, 2022
Polybenzimidazoles (PBI) doped with phosphoric acid (PA) are promising electrolytes for medium temperature fuel cells. Their significant disadvantage is a partial or complete loss of mechanical properties and an increase in hydrogen permeability at ...
Anna A. Lysova, Igor I. Ponomarev, Kirill M. Skupov, Elizaveta S. Vtyurina, Kirill A. Lysov, Andrey B. Yaroslavtsev   +5 more
doaj   +1 more source

Enhanced MEA Performance for an Intermediate-Temperature Fuel Cell with a KH₅(PO₄)₂-Doped Polybenzimidazole Membrane

Membranes, 2022
This work exhibits an effective approach to enhance the performance of membrane-electrode assembly (MEA) with KH5(PO4)2-doped PBI membrane, by adding phosphoric acid (PA) in the catalyst layer (CL). The ohmic resistance and single-cell performance of the
Yifan Li, Jing Hu, Joan Papavasiliou, Zhiyong Fu, Li Chen, Haibin Li   +5 more
doaj   +1 more source

Polybenzimidazole Membrane Crosslinked with Epoxy-Containing Inorganic Networks for Organic Solvent Nanofiltration and Aqueous Nanofiltration under Extreme Basic Conditions

Membranes, 2022
In this study, a novel polybenzimidazole (PBI)-based organic solvent nanofiltration (OSN) membrane possessing excellent stability under high pH condition was developed.
Jaewon Lee, Hyeonmin Yang, Tae-Hyun Bae
doaj   +1 more source

Characterization of PBI/Graphene Oxide Composite Membranes for the SO₂ Depolarized Electrolysis at High Temperature

Membranes, 2022
In this work, polybenzimidazole (PBI) membranes with different graphene oxide (GO) contents (0.5, 1.0, 2.0, and 3.0 wt %) as organic filler have been prepared.
Sergio Diaz-Abad, Sandra Fernández-Mancebo, Manuel A. Rodrigo, Justo Lobato   +3 more
doaj   +1 more source

Application of Crosslinked Polybenzimidazole-Poly(Vinyl Benzyl Chloride) Anion Exchange Membranes in Direct Ethanol Fuel Cells

Membranes, 2020
Crosslinked membranes have been synthesized by a casting process using polybenzimidazole (PBI) and poly(vinyl benzyl chloride) (PVBC). The membranes were quaternized with 1,4-diazabicyclo[2.2.2]octane (DABCO) to obtain fixed positive quaternary ammonium ...
Daniel Herranz, Roxana E. Coppola, Ricardo Escudero-Cid, Kerly Ochoa-Romero, Norma B. D’Accorso, Juan Carlos Pérez-Flores, Jesús Canales-Vázquez, Carlos Palacio, Graciela C. Abuin, Pilar Ocón   +9 more
doaj   +1 more source