Influence of Operations of MF-4SC Membrane In Situ Modification with Zirconium Hydrogen Phosphate on Its Transport Properties and PEMFC Characteristics

IF 2 Q4 CHEMISTRY, PHYSICAL

Membranes and Membrane Technologies Pub Date : 2025-03-18 DOI:10.1134/S2517751624600729

J. Loza, N. Loza, I. Falina

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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.

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磷酸氢锆原位改性MF-4SC膜操作对其输运性能和PEMFC特性的影响

本工作旨在研究均质全氟膜在原位导入磷酸氢锆（ZrHP）不同阶段的特性。研究了采用孔隙填充法修饰ZrHP的样品、除去ZrHP前驱体溶液处理后与第一种处理方法相同的样品和初始膜样品。经加热浸泡溶液处理后，膜在盐酸溶液中的扩散渗透率和比电导率显著提高。ZrHP纳米颗粒出现后，这种效应减弱。计算了微非均质模型的输运结构参数。在浸泡溶液处理后，由于凝胶相在醇中溶胀更大，内部平衡溶液体积和凝胶相中离子和反离子的流动性都增加了。使用zrp修饰膜作为聚合物电解质的PEMFC MEA的比功率密度明显低于初始膜，但退火膜补偿了这一影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Membranes and Membrane Technologies Multiple-

CiteScore

3.10

自引率

31.20%

发文量

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.