Phosphoric Acid-Immobilized Polybenzimidazole Hybrid Membranes with TiO2 Nanowires for High-Temperature Polymer Electrolyte Membrane Fuel Cells

IF 3.5 4区化学 Q2 ELECTROCHEMISTRY

ChemElectroChem Pub Date : 2025-09-17 DOI:10.1002/celc.202500238

Ryo Kato, Yuki Nakamura, Keiichiro Maegawa, Reiko Matsuda, Masayo Takahashi, Satoshi Obokata, Kazuhiro Hikima, Atsunori Matsuda

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引用次数: 0

Abstract

Polymer electrolyte membrane fuel cells (PEMFCs) have attracted significant attention as next-generation clean compact power sources. In this study phosphoric-acid-doped polybenzimidazole (PBI) membranes with added itanium dioxide nanowires are prepared to afford novel hybrid membranes that improve the performance and reliability of PEMFCs. Furthermore, the electrochemical and power generation properties of membrane-electrode assemblies fabricated using the prepared hybrid electrolyte membranes are investigated. The swelling of the PBI membrane caused by phosphoric acid doping is suppressed by the titanium dioxide nanowires, thereby increasing the phosphoric acid concentration in the PBI membrane, even with very low dopant loadings. The increased proton conductivity and maximum power density are attributed to the increased phosphoric acid concentration in the membrane.

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高温聚合物电解质膜燃料电池用TiO2纳米线磷酸固定化聚苯并咪唑杂化膜

聚合物电解质膜燃料电池（PEMFCs）作为新一代清洁紧凑型能源受到广泛关注。本研究制备了添加二氧化钛纳米线的磷酸掺杂聚苯并咪唑（PBI）膜，提供了一种新型杂化膜，提高了pemfc的性能和可靠性。此外，还研究了用所制备的混合电解质膜制备的膜电极组件的电化学和发电性能。二氧化钛纳米线抑制了磷酸掺杂引起的PBI膜的膨胀，从而增加了PBI膜中的磷酸浓度，即使掺杂量很低。增加的质子电导率和最大功率密度归因于膜中磷酸浓度的增加。

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来源期刊

ChemElectroChem ELECTROCHEMISTRY-

CiteScore

7.90

自引率

2.50%

发文量

515

审稿时长

1.2 months

期刊介绍： ChemElectroChem is aimed to become a top-ranking electrochemistry journal for primary research papers and critical secondary information from authors across the world. The journal covers the entire scope of pure and applied electrochemistry, the latter encompassing (among others) energy applications, electrochemistry at interfaces (including surfaces), photoelectrochemistry and bioelectrochemistry.