Influence of Operations of MF-4SC Membrane In Situ Modification with Zirconium Hydrogen Phosphate on Its Transport Properties and PEMFC Characteristics
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Abstract
This work is aimed at studying the characteristics of a homogeneous perfluorinated membrane at various stages of introducing zirconium hydrogen phosphate (ZrHP) in situ. A sample modified with ZrHP by pore-filling method, a sample processed the same as the first one, excluding treating with ZrHP precursor solution, and a sample of initial membrane are studied. A significant increase in the diffusion permeability and specific conductivity of the membrane in the solutions of hydrochloric acid after its treatment with heated immersion solutions is observed. This effect reduces after ZrHP nanoparticles appearance. The transport-structural parameters of the microheterogeneous model have been calculated. Both the internal equilibrium solution volume and the mobility of coions and counterions in the gel phase increase after treating with immersion solutions, due to greater swelling of the gel phase in alcohols. The specific power density of the PEMFC MEA with the ZrHP-modified membrane used as a polymeric electrolyte is significantly lower compared to the initial membrane, but annealing the membrane compensates this effect.
期刊介绍：
The journal Membranes and Membrane Technologies publishes original research articles and reviews devoted to scientific research and technological advancements in the field of membranes and membrane technologies, including the following main topics:novel membrane materials and creation of highly efficient polymeric and inorganic membranes;hybrid membranes, nanocomposites, and nanostructured membranes;aqueous and nonaqueous filtration processes (micro-, ultra-, and nanofiltration; reverse osmosis);gas separation;electromembrane processes and fuel cells;membrane pervaporation and membrane distillation;membrane catalysis and membrane reactors;water desalination and wastewater treatment;hybrid membrane processes;membrane sensors;membrane extraction and membrane emulsification;mathematical simulation of porous structures and membrane separation processes;membrane characterization;membrane technologies in industry (energy, mineral extraction, pharmaceutics and medicine, chemistry and petroleum chemistry, food industry, and others);membranes and protection of environment (“green chemistry”).The journal has been published in Russian already for several years, English translations of the content used to be integrated in the journal Petroleum Chemistry. This journal is a split off with additional topics.
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