Membranes for Fuel Cells

Sgarbossa, Paolo; Crivellaro, Giovanni; Lanero, Francesco; Pagot, Gioele; Alvi, Afaaf R.; Negro, Enrico; Vezzù, Keti; Di Noto, Vito

doi:10.1002/9783527830572.ch8

Cited by 2 publications

(2 citation statements)

References 164 publications

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“…The water linked to clays facilitates proton conduction, playing a vital role in boosting proton conduction, especially at higher temperatures. 28,29 Polyvinyl chloride (PVC) is a versatile polymer known for its film-forming properties and compatibility with various chemical environments. These attributes have sparked significant interest in exploring PVC-based materials for a wide range of electrochemical applications, including batteries and supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

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Advancing High-Temperature PEMFCs: Synthesis and Characterization of Poly(2,5-benzimidazole) Nanoclay/SPVC Composite Membranes

Altaf,

Ahmed,

Khan

et al. 2024

Energy Fuels

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High-temperature proton-exchange membrane fuel cells (HT-PEMFCs) have indeed emerged as highly efficient devices for energy conversion with numerous applications, ranging from portable electronics to transportation. The development of advanced electrolyte materials is imperative to enhance the PEMFCs' stability and performance. Herein, we use sulfonated polyvinyl chloride (SPVC) and 2,5-benzimidazole-modified montmorillonite (AB-MMT) to create a series of novel composite electrolytes for PEMFC via a solution-casting method. PVC, well known for its excellent film-forming properties, is combined with modified MMT, a natural inorganic clay with a high surface area and ion-exchange capability (IEC). The composite polymer electrolyte membranes (PEMs) are further doped with phosphoric acid (PA) at varying concentrations. The structural, morphological, and electrochemical properties of prepared PEMs are systematically analyzed using FTIR, XRD, SEM, and impedance spectroscopies. The effect of PA on PEMs in terms of water uptake, mechanical and chemical stability, and ionic conductivity is also analyzed. The synergy between SPVC and AB-MMT creates a favorable microenvironment for ion transport within the membrane, contributing to enhanced PEMFC performance. The experimental results demonstrate that 10SBZMP exhibits a substantial increase in ionic conductivity, i.e., 0.069 at 150 °C and RH 98% with a power density of 0.252 W/cm 2 . The development of advanced materials like these paves the way for more efficient and reliable fuel-cell technologies, contributing to the sustainable energy landscape of the future.

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Section: Introductionmentioning

confidence: 99%

“…This enhancement in the proton conductivity is attributed to the moisture-retaining capacity of clay layers, which helps to mitigate dehydration, a common issue with standard Nafion membranes. The water linked to clays facilitates proton conduction, playing a vital role in boosting proton conduction, especially at higher temperatures. , …”

Section: Introductionmentioning

confidence: 99%

Advancing High-Temperature PEMFCs: Synthesis and Characterization of Poly(2,5-benzimidazole) Nanoclay/SPVC Composite Membranes

Altaf,

Ahmed,

Khan

et al. 2024

Energy Fuels

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Impact of Transition Metals and Electrocatalyst Layer Thickness on the Pt‐Based Cathodes of Proton Exchange Membrane Fuel Cells – Do Multimetallic Electrocatalysts Necessarily Yield an Improved Performance?

Sgarbi,

Ait Idir,

Labarde

et al. 2024

Advanced Energy Materials

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The interplay between i) cathodic electrocatalytic layer (EC layer) features of proton exchange membrane fuel cell (PEMFC), focusing on the oxygen reduction reaction (ORR) electrocatalyst (EC) and the Pt loading; and ii) the PEMFC performance and durability is evaluated. An innovative hierarchical “core–shell” carbon nitride multimetallic ORR electrocatalyst (“PtCuNi/C” H‐EC) is compared with a conventional Pt/C benchmark. The various contributions to PEMFC performance at beginning of test (BOT) are isolated and correlated to the physicochemical features of the ORR EC and the cathodic EC layer. The PEMFC durability is investigated extensively via accelerated stress tests (ASTs) mimicking long‐term operation. Particular attention is dedicated to determine how ageing affects: i) PEMFC cell voltage; and ii) the cathode electrochemically active surface area (ECSA). “Post‐mortem” studies are carried out to probe how ageing influences the cathodic EC layer features, including: i) chemical composition; ii) elements distribution; iii) EC morphology; and iv) structure and crystal size of the Pt‐based metal nanoparticles bearing the active sites. Integrating the experimental results allows to identify both the positive and the detrimental effects triggered by the introduction of transition metals (TMs) in the ORR EC on the factors modulating PEMFC performance and long‐term operation.

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Membranes for Fuel Cells

Cited by 2 publications

References 164 publications

Advancing High-Temperature PEMFCs: Synthesis and Characterization of Poly(2,5-benzimidazole) Nanoclay/SPVC Composite Membranes

Advancing High-Temperature PEMFCs: Synthesis and Characterization of Poly(2,5-benzimidazole) Nanoclay/SPVC Composite Membranes

Impact of Transition Metals and Electrocatalyst Layer Thickness on the Pt‐Based Cathodes of Proton Exchange Membrane Fuel Cells – Do Multimetallic Electrocatalysts Necessarily Yield an Improved Performance?

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