Effect of phosphomolybdate anionic redox species on the redox flow polymer electrolyte fuel cell performance

Naruse, Shinji; Muroyama, Hiroki; Matsui, Toshiaki; Eguchi, Koichi

doi:10.1016/j.jpowsour.2023.233653

Journal of Power Sources

2023

DOI: 10.1016/j.jpowsour.2023.233653

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Effect of phosphomolybdate anionic redox species on the redox flow polymer electrolyte fuel cell performance

Shinji Naruse,

Hiroki Muroyama,

Toshiaki Matsui

et al.

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2024

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Cited by 3 publications

References 33 publications

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Adaptability of Heteropolytungstate Anions as Efficient Anode Redox Mediators in Redox Flow Polymer Electrolyte Fuel Cells

Naruse,

Muroyama,

Matsui

et al. 2024

ChemSusChem

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Heteropolyanions (HPAs) are known as the candidate for an anode redox mediator for redox flow polymer electrolyte fuel cells (PEFCs). The electrochemical properties of HPAs differ depending on the transition elements and heteroatoms in HPAs. For example, heteropolytungstate anions (W–HPAs), in which the transition element is tungsten, have a lower one–electron reduction potential than other HPAs. Therefore, it has been reported that redox flow PEFCs adapted with W–HPAs exhibit high power generation performance. On the other hand, studies on the heteroatoms of HPAs are limited only to electrochemical properties, and statistical and comprehensive studies on the power generation performance of redox flow PEFCs are lacking. Thus, it is beneficial to clarify the optimal heteroatom in order to design anolytes suitable for redox flow PEFCs. In this study, heteropolytungstate anions with different heteroatoms were adapted as anodic redox mediators in a redox flow PEFC. In power generation tests, the redox flow PEFC with an anolyte of zinctungstate anion showed the highest performance. Zinctungstate anion exhibited the fastest reduction and oxidation rates among the W–HPAs investigated in this study.

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Adaptability of Heteropolytungstate Anions as Efficient Anode Redox Mediators in Redox Flow Polymer Electrolyte Fuel Cells

Naruse,

Muroyama,

Matsui

et al. 2024

ChemSusChem

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Effect of metal cation coaddition in phosphovanadomolybdate anion catholytes on the redox flow polymer electrolyte fuel cell performance

Naruse,

Yamamoto,

Nakada

et al. 2024

International Journal of Hydrogen Energy

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Impact of pH and Composition of Phosphovanadomolybdate Anionic Catholytes on the Performance of Redox Flow Polymer Electrolyte Fuel Cells

NARUSE,

OSHIRO,

NAKADA

et al. 2024

Electrochemistry

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Effect of phosphomolybdate anionic redox species on the redox flow polymer electrolyte fuel cell performance

Cited by 3 publications

References 33 publications

Adaptability of Heteropolytungstate Anions as Efficient Anode Redox Mediators in Redox Flow Polymer Electrolyte Fuel Cells

Adaptability of Heteropolytungstate Anions as Efficient Anode Redox Mediators in Redox Flow Polymer Electrolyte Fuel Cells

Effect of metal cation coaddition in phosphovanadomolybdate anion catholytes on the redox flow polymer electrolyte fuel cell performance

Impact of pH and Composition of Phosphovanadomolybdate Anionic Catholytes on the Performance of Redox Flow Polymer Electrolyte Fuel Cells

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