A Nafion-Ceria Composite Membrane Electrolyte for Reduced Methanol Crossover in Direct Methanol Fuel Cells

Parthiban, V.; Sahu, A. K.; Parthasarathy, S.

doi:10.3390/en10020259

Cited by 41 publications

(22 citation statements)

References 29 publications

(38 reference statements)

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“…For instance, Bellucci et al demonstrated that the optical properties changes were correlated to nanoparticle-driven interface modulations [1]. The potential uses of composites include battery cathodes and solid-state ionics [2,3], supercapacitor and dielectrics [4,5], catalysts [6,7], corrosion protection [8,9], sensors [10], optical and electrical materials [11,12], ultraviolet (UV) blocking [13,14,15] and many others. In these recent years, composites with the use of organic–inorganic hybrids were found to possess improved and new properties.…”

Section: Introductionmentioning

confidence: 99%

Interface Interactions in Conjugated Polymer Composite with Metal Oxide Nanoparticles

Atisme

Tseng

et al. 2019

Nanomaterials

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This study presents the preparation, characterization, and properties of a new composite containing cerium oxide nanoparticles and a conjugated polymer. CeO2 nanoparticles prepared using the co-precipitation method were dispersed into the conjugated polymer, prepared using the palladium-catalyzed Suzuki–Miyaura cross-coupling reaction. The interface interactions between the two components and the resultant optoelectronic properties of the composite are demonstrated. According to transmission electron microscopy and X-ray absorption spectroscopy, the dispersion of CeO2 nanoparticles in the polymer matrix strongly depends on the CeO2 nanoparticle concentration and results in different degrees of charge transfer. The photo-induced charge transfer and recombination processes were studied using steady-state optical spectroscopy, which shows a significant fluorescence quenching and red shifting in the composite. The higher photo-activity of the composite as compared to the single components was observed and explained. Unexpected room temperature ferromagnetism was observed in both components and all composites, of which the origin was attributed to the topology and defects.

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Section: Introductionmentioning

confidence: 99%

Interface Interactions in Conjugated Polymer Composite with Metal Oxide Nanoparticles

Atisme

Tseng

et al. 2019

Nanomaterials

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“…4(a) and (b). More roughness on modified Nafion ® nanocomposite membranes improves the contact between the electrodes [31]. The modified membranes show the presence of ZrO 2 -CNT in the surface of membrane, which can be assigned to the hydrophobic (light regions)/hydrophilic (dark regions) domains across the membrane matrix due to the interaction of the sulphonic groups dispersed within the hydrophobic network of the Nafion ® polymeric backbone [32].…”

Section: Resultsmentioning

confidence: 98%

Enhancing the mechanical properties of zirconia/Nafion® nanocomposite membrane through carbon nanotubes for fuel cell application

Sigwadi

Dhlamini

Mokrani

et al. 2019

Heliyon

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Membranes are widely used daily, such as for filtration in reverse osmosis, or in the form of electrolyte membrane fuel cells. Modified Nafion ® membranes were synthesised by impregnation and their mechanical properties were observed. The effect of the incorporation of a ZrO 2 -CNT nano-filler within Nafion ® membrane on the thermal stability and crystallinity was investigated by TGA and XRD. Tensile test results show the increases in the mechanical properties of Nafion ® 117 membranes impregnated with ZrO 2 -CNT when compared with that of commercial Nafion ® 117 membranes. The results also show that adding ZrO 2 -CNT in Nafion ® 117 membranes improves the water contact angle and water uptake, as it enhances water retention within the membrane. The SEM results indicated that ZrO 2 -CNT was well distributed in the Nafion ® 117 membrane pores through the impregnation method.

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“…Since the composite membranes were designed to allow operation of a DMFC (or a PEFC) at temperatures higher than 90–100 °C [ 38 , 39 ], reducing the drawback of membrane dehydration at those temperatures with consequent loss of conductivity. The influence of the CTO filler on the electrochemical behavior of the membrane in DMFC at 110 °C has been evaluated, and the results are reported in Figure 7 .…”

Section: Resultsmentioning

confidence: 99%

Composite Nafion-CaTiO3-δ Membranes as Electrolyte Component for PEM Fuel Cells

et al. 2020

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Manufacturing new electrolytes with high ionic conductivity has been a crucial challenge in the development and large-scale distribution of fuel cell devices. In this work, we present two Nafion composite membranes containing a non-stoichiometric calcium titanate perovskite (CaTiO3−δ) as a filler. These membranes are proposed as a proton exchange electrolyte for Polymer Electrolyte Membrane (PEM) fuel cell devices. More precisely, two different perovskite concentrations of 5 wt% and 10 wt%, with respect to Nafion, are considered. The structural, morphological, and chemical properties of the composite membranes are studied, revealing an inhomogeneous distribution of the filler within the polymer matrix. Direct methanol fuel cell (DMFC) tests, at 110 °C and 2 M methanol concentration, were also performed. It was observed that the membrane containing 5 wt% of the additive allows the highest cell performance in comparison to the other samples, with a maximum power density of about 70 mW cm−2 at 200 mA cm−2. Consequently, the ability of the perovskite structure to support proton carriers is here confirmed, suggesting an interesting strategy to obtain successful materials for electrochemical devices.

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A Nafion-Ceria Composite Membrane Electrolyte for Reduced Methanol Crossover in Direct Methanol Fuel Cells

Cited by 41 publications

References 29 publications

Interface Interactions in Conjugated Polymer Composite with Metal Oxide Nanoparticles

Interface Interactions in Conjugated Polymer Composite with Metal Oxide Nanoparticles

Enhancing the mechanical properties of zirconia/Nafion® nanocomposite membrane through carbon nanotubes for fuel cell application

Composite Nafion-CaTiO3-δ Membranes as Electrolyte Component for PEM Fuel Cells

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