Ultrathin Electrolyte Membranes with PFSA-Vinylon Intermediate Layers for PEM Fuel Cells

Kim, Je–Deok; Yamasaki, Kazuya; Ishimoto, Hitoshi; Takata, Yasumitsu

doi:10.3390/polym12081730

Cited by 10 publications

(6 citation statements)

References 9 publications

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“…Existing studies have demonstrated that altering the compound composition of the catalyst ink [5][6][7] or the thickness of the membrane [8][9][10] can potentially enhance the fuel cell's efficiency. The ORR's reaction kinetics are significantly faster in alkaline than acidic environments, prompting recent research interest in these conditions.…”

Section: Hor Anodementioning

confidence: 99%

Influence of ionomer concentration and membrane thickness on membrane electrode assembly in alkaline fuel cell performance

Saidin,

Jehan,

Leong

et al. 2024

Asia-Pacific J Chem Eng

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The alkaline fuel cell is subject to extensive research owing to its fast kinetic response relative to acidic media. However, the efficiency of the catalytic layer at the electrodes depends on the amount and distribution of ionomers present there. It is crucial to have the right ionomer concentration to have the best cell performance. Additionally, the membrane thickness is a significant parameter that affects the system performance in alkaline fuel cells. This research studies the best alkaline fuel cell performance using the membrane electrode assembly preparation parameters. The prepared membrane electrode assembly consists of catalyst layers containing Fumion, a commercial anion exchange ionomer, as a binding agent, sandwiched a Fumasep, a well‐known commercial anion exchange membrane. This work elucidates the single‐cell alkaline fuel cell performance by quantifying the influence of Fumion concentrations (~20–60 wt.%) within the catalytic layer and Fumasep thicknesses (30, 75 and 130 μm). The best concentration of Fumion was found to be 50 wt.%, culminating in the maximum peak power density of 67 mW cm−2 achieved by the FAA‐3‐PK‐75. Meanwhile, FAA‐3‐PK‐130 exhibited the highest open‐circuit potential with lowest power density at 53 mW cm−2. These findings may serve as a valuable guide for membrane electrode assembly preparation in alkaline fuel cells.

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Section: Hor Anodementioning

confidence: 99%

Influence of ionomer concentration and membrane thickness on membrane electrode assembly in alkaline fuel cell performance

Saidin,

Jehan,

Leong

et al. 2024

Asia-Pacific J Chem Eng

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“…The other approach generally accepted in the related art applied for comparison of performances is to fix the voltage at 0.65 V, which corresponds to 50% electrical efficiency [72]. In terms of the relative order of performance between membranes, the two approaches generally do not lead to a difference [73,74].…”

Section: Membrane Conductivity and In Situ Single Cell Testingmentioning

confidence: 99%

Development of WO3–Nafion Based Membranes for Enabling Higher Water Retention at Low Humidity and Enhancing PEMFC Performance at Intermediate Temperature Operation

et al. 2022

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The proton exchange membrane (PEM) represents a pivotal material and a key challenge in developing fuel cell science and hydrogen technology. Nafion is the most promising polymer which will lead to its commercialisation. Hybrid membranes of nanosized tungsten oxide (WO3) and Nafion were fabricated, characterised, and tested in a single cell. The incorporation of 10 wt.% WO3 resulted in 21% higher water uptake, 11.7% lower swelling ratio, almost doubling the hydration degree, and 13% higher mechanical stability of the hybrid membrane compared to the Nafion XL. Compared to commercial Nafion XL, the rNF–WO-10 hybrid membrane showed an 8.8% and 20% increase in current density of the cell at 0.4 V operating at 80 and 95 °C with 1.89 and 2.29 A/cm2, respectively. The maximum power density has increased by 9% (0.76 W/cm2) and 19.9% (0.922 W/cm2) when operating at the same temperatures compared to the commercial Nafion XL membrane. Generally, considering the particular structure of Nafion XL, our Nafion-based membrane with 10 wt. % WO3 (rNF–WO-10) is a suitable PEM with a comparable performance at different operating conditions.

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“…Improved interfacial bonding between polar PVA and Nafion ionomer helped in overcoming the creep deformation observed in case of Nafion/PTFE membrane 65 . Recently, Kim et al 38,39 demonstrated a concept of multilayer membrane preparation (without the use of reinforcing support), using PVA and Nafion. For this purpose, they applied sequential coating layers of PFSA, PFSA‐PVA and PFSA solution on a polyimide sheet.…”

Section: Pva‐based Membranes For Fuel Cellsmentioning

confidence: 99%

Poly(vinyl alcohol)‐based membranes for fuel cell and water treatment applications: A review on recent advancements

Choudhury

Gohil

Dutta

2021

Polymers for Advanced Techs

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Clean water and energy are two of the most important requirements for human survival. Membrane‐based filtration represents one of the advanced technologies involved in water decontamination; while, polymer electrolyte membrane fuel cells (PEMFCs) are among the frontrunners in the alternative and renewable energy domain. It is evident that membrane‐based processes provide sustainable solution to the ever‐increasing demand of energy and clean water. Over the years, it has been realized that synthetic poly(vinyl alcohol) (PVA) is one of the potential candidates for the development of membranes, owing to its hydrophilicity, barrier property, film forming ability, crosslinking ability, biodegradability, and low cost. These properties have been widely explored for the fabrication of polymer electrolyte membranes for PEMFCs, in order to improve the ionic conductivity and methanol barrier property, as well as, to reduce the membrane fabrication cost. On the other hand, high water solubility and film forming characteristics of PVA have been used for the formation of water treatment membranes, for enhancing the antifouling property and chemical stability. This review provides in‐depth discussions and analyses on the structure and properties of various PVA‐based copolymers, and their applications as membrane materials for PEMFCs (including direct methanol and alkaline fuel cells) and water remediation.

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Ultrathin Electrolyte Membranes with PFSA-Vinylon Intermediate Layers for PEM Fuel Cells

Cited by 10 publications

References 9 publications

Influence of ionomer concentration and membrane thickness on membrane electrode assembly in alkaline fuel cell performance

Influence of ionomer concentration and membrane thickness on membrane electrode assembly in alkaline fuel cell performance

Development of WO3–Nafion Based Membranes for Enabling Higher Water Retention at Low Humidity and Enhancing PEMFC Performance at Intermediate Temperature Operation

Poly(vinyl alcohol)‐based membranes for fuel cell and water treatment applications: A review on recent advancements

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