Titanium dioxide nanoparticle incorporated PVDF-HFP based composite membrane for direct methanol fuel cells application

Karim, M.F. Abd

doi:10.3329/bjsir.v56i2.54319

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…Furthermore, adding hydrophilic inorganic fillers raised the membrane's hydrophilic character [23] by increasing the number of hydrophilic sites, such as OH -, COOand O - [24]. As the TiO2 particle size is sufficiently small, the existing waters of hydration of sulfuric acid may form a bridge between shrunken clusters, thereby providing a pathway for proton hopping from one cluster to another [25]. For instance, CS/0.5TiO2 and CS/1.0TiO2 exhibited a lower water uptake than pristine CS.…”

Section: Proton Conductivity Of Cs/tio2 Membranesmentioning

confidence: 99%

“…The diffusion coefficient reflects the effect of a surrounding environment on the molecular motion of the permeant, and the sorption coefficient correlates with the concentration of a component in the fluid phase. Another key feature of a good electrolyte for electrochemical applications is the ability to separate the anode and cathode sides [25]. An electrolyte must prohibit reactants from crossing from the anode to the cathode or vice versa.…”

Section: Methanol Permeabilitymentioning

confidence: 99%

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Chitosan Incorporated with Titanium (IV) Oxide Membrane for Direct Methanol Fuel Cell Application

Parameswaran,

Suhaimin,

Jaafar

2024

AMST

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The direct methanol fuel cell (DMFC), a type of promoted polymer electrolyte membrane fuel cell (PEMFC), has received tremendous attention in the past two decades because of its potential as a promising technology for clean and efficient power generation in the twenty-first century. Over the past four decades, the dominancy of perfluorinated proton exchange membranes (PEM) such as Nafion is prolonging in the current PEM technology due to its chemical stability, high proton conductivity and high mechanical strength in the low operating temperatures. However, the Nafion membrane also has several weaknesses, such as high methanol permeability, high manufacturing cost, and dehydration with low proton conductivity at elevated temperatures > 100°C. This study fabricated a novel composite membrane by blending the pristine chitosan (CS) and titanium oxide (TiO2) at various loadings, 0.5, 1.0, 1.5 and 2.0 wt% to obtain high performance in DMFC. SEM and FTIR analysis showed that the grafting of (O-Ti-O) successfully incorporated into the CS polymer matrix. Water and methanol uptake of CS/TiO2 composite membrane decreased with increase of TiO2 loadings, but proton conductivity value increased. The CS/TiO2 membrane with 1.5wt.%TiO2 loading exhibited highest proton conductivity (0.41mScm-1) and lowest methanol permeability (17.18E-08cm2/s) characteristics among other membranes this due to the hydrophilic TiO2 raised the membrane hydrophilic character by increasing the number of hydrophilic sites, such as OH-, COO- and O-. The results obtained from the study can be used to conclude that chitosan membrane with TiO2 filler is a promising high performance PEM candidate for DMFC applications.

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Section: Proton Conductivity Of Cs/tio2 Membranesmentioning

confidence: 99%

Section: Methanol Permeabilitymentioning

confidence: 99%

Chitosan Incorporated with Titanium (IV) Oxide Membrane for Direct Methanol Fuel Cell Application

Parameswaran,

Suhaimin,

Jaafar

2024

AMST

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Refill and Recharge Smart Portable Micro-Devices by Direct Methanol Fuel Cells: Developed with PVA Based Modified Electrolyte Membranes

Karim

Dipti

Sarkar

et al. 2021

2021 International Conference on Automation, Control and Mechatronics for Industry 4.0 (ACMI)

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Clay powder in polymer composite membranes enhanced the performance of direct methanol fuel cells

Karim,

Dipti,

Elahi

2024

Polymers and Polymer Composites

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Polyvinyl alcohol has the potential to be used in fuel cell membranes due to its chemical, mechanical, and membrane-forming capabilities, as well as its higher hydrophilicity and low methanol permeability. However, the pure PVA membrane has a lower proton conductivity than the NafionTM membrane. With the addition of some ceramic fillers, PVA can be a possible alternative to NafionTM membranes. Therefore, we used the solution method to prepare three polyvinyl alcohol-based composite membranes with the following compositions: a) 5 wt% PVA (polyvinyl alcohol), b) 5 wt% PVA/2 wt % PEG (polyethylene glycol)/wt.1% silicon dioxide (SiO2) nanoparticles, and c) 5 wt% PVA/2 wt% PEG/wt.1% clay powder. The membranes were characterized using Fourier Transform Infrared Spectroscopy (FTIR), Thermal Gravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), Energy dispersive X-ray (EDX), oxidative stability, ion exchange capacity, water absorption characteristics, conductivity, and permeability. FITR, EDX, and SEM confirmed the successful fabrication of the composite membrane, while TGA demonstrated membrane thermal stability and other parameters relevant to fuel cell membranes. The methanol permeability of the membrane is pure 5 wt % PVA, 5 wt%PVA/2 wt%/1 wt% SiO2, and 5 wt% PVA/2 wt% PEG/wt.1% Clay measured 2.37 × 10−6 cm2/s, 2.89 × 10−6 cm2/s, and 1.57 × 10−6 cm2/s, respectively. The methanol permeability of 5 wt% PVA/2 wt% PEG/wt.1% Clay is better than of Nafion117 (5.16 × 10−6 cm2/s as reported). The membrane 5 wt% PVA/2 wt% PEG/1% Clay exhibits satisfactory levels of oxidative stability (RW% = 94.09 at 1.32 h), IEC (0.232 meq/g), conductivity (0.00432 S/cm), methanol permeability (1.57 × 10−6 cm2/s), selectivity (3.63 × 10−4 Ss/cm3), and better water uptake properties at fuel cell operating temperature. As a result, it is reasonable to expect that PVA-based modified membranes will outperform NafionTM membranes in the future.

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Titanium dioxide nanoparticle incorporated PVDF-HFP based composite membrane for direct methanol fuel cells application

Cited by 3 publications

References 33 publications

Chitosan Incorporated with Titanium (IV) Oxide Membrane for Direct Methanol Fuel Cell Application

Chitosan Incorporated with Titanium (IV) Oxide Membrane for Direct Methanol Fuel Cell Application

Refill and Recharge Smart Portable Micro-Devices by Direct Methanol Fuel Cells: Developed with PVA Based Modified Electrolyte Membranes

Clay powder in polymer composite membranes enhanced the performance of direct methanol fuel cells

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