Polyaniline decorated graphene oxide on sulfonated poly(ether ether ketone) membrane for direct methanol fuel cells application

Yogarathinam, Lukka Thuyavan; Jaafar, Juhana; Ismail, Ahmad Fauzi; Goh, Pei Sean; Mohamed, Mohamad Azuwa; Hanifah, Mohamad Fahrul Radzi; Arthanareeswaran, G.; Peter, Jerome

doi:10.1002/pat.5491

Cited by 23 publications

(3 citation statements)

References 57 publications

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“…45 reported that by adding polyaniline-coated graphene oxide to the SPEEK matrix, the glass transition of the SPEEK nanocomposite decreased. 46 A possible explanation for this might be that the introduced additive causes to the increase of fractional free volume in the matrix. 47 Another possible explanation for this is that when the interaction between filler and polymer matrix is repulsive such decrement in T g could be revealed, and it leads to the facilitation of the polymer chains mobility.…”

Section: Optimization Analysis Of Pcnt Diametermentioning

confidence: 99%

The effect of polydopamine coated multi‐walled carbon nanotube on the wettability of sulfonated poly(ether ether ketone) nanocomposite as a proton exchange membrane

Esmaeilzadeh

Karimi

Shoushtari

et al. 2022

J of Applied Polymer Sci

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In the present study, the effect of polydopamine coated multi-walled carbon nanotube (PCNT) on the surface properties -wettability and surface free energy (SFE)of a proton exchange membrane (PEM) nanocomposite based on sulfonated poly(ether ether ketone) (SPEEK) was studied. First, the polydopamine (PDA) coating process was optimized based on a response surface methodology (RSM), then PCNTs and the prepared PEM nanocomposites were characterized using field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), UV-vis spectroscopy, X-Ray diffraction (XRD), differential scanning calorimetry (DSC), and atomic force microscopy (AFM) analyses. The physicochemical properties of membranes were also studied. The surface properties of PEMs were evaluated through estimating the SFE based on Owens, Wendt, Rabel, and Kaelble (OWRK) and Kwok and Neumann (K&N) theories; the SFE data revealed that OWRK is a more reliable method in this respect. Interestingly, the total SFE of SPEEK/PCNT nanocomposite did not notably change compared to the SPEEK membrane, but the polarity of SPEEK/PCNTs significantly decreased from 32.1% in SPEEK to 3.8% in the nanocomposite. This result could be attributed to the acid-base interaction of nanofiller and polymer, resulting in the involvement of polar group of polymer and new orientation of SPEEK chains at the surface of the nanocomposite.

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Section: Optimization Analysis Of Pcnt Diametermentioning

confidence: 99%

The effect of polydopamine coated multi‐walled carbon nanotube on the wettability of sulfonated poly(ether ether ketone) nanocomposite as a proton exchange membrane

Esmaeilzadeh

Karimi

Shoushtari

et al. 2022

J of Applied Polymer Sci

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“…The world is in the midst of an energy crisis due to the combination of dwindling fossil fuel supplies and rising energy use [1]. Fuel cells (FCs) are being studied as a possible tool for solving this issue.…”

Section: Introductionmentioning

confidence: 99%

An Effective Methanol-Blocking Cation Exchange Membrane Modified with Graphene Oxide Nanosheet for Direct Methanol Fuel Cells

et al. 2023

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Herein, graphene oxide nanosheets (GO) were synthesized and employed as an additive at various proportions to fabricate a novel cation exchange membrane based on grafted cellulose acetate with sodium 4-styrenesulfonate (GCA) via a solution casting method for direct methanol fuel cell (DMFC) applications. The structure of composite membranes has been examined using FTIR, TGA, SEM, and DSC. The physicochemical properties of the GCA/GO membranes, such as ion exchange capacity, water uptake, mechanical and chemical stability, methanol permeability, and proton conductivity, were measured. The inclusion of GO significantly improved the ability to block methanol, contributing to the observed effects. Among the several composite membranes developed, GCA/GO (2 wt.%) had the highest selectivity with a water uptake of 45%, proton conductivity of 5.99 × 10−3 S/cm, methanol permeability of 1.12 × 10−7 cm2/s, and electrical selectivity of 26.39 × 103 Ss/cm3. Simultaneously, the composite membranes’ mechanical, oxidative, and thermal stabilities were also enhanced. Single-cell estimation using a 2 wt.% GO modified membrane demonstrated a maximum power density of 31.85 mW.cm−2 at 30 °C. Overall, these findings highlight the perspective of the application of these developed membranes in the DMFC.

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“…In addition, its barrier effect, modulated nanophase separation and decreased the void volume of the membrane by the interaction between GO and host polymers can increase the resistance of methanol crossover. ,, Therefore, it possesses grand promise for boosting proton conduction and restraining methanol permeation of PEMs. For example, sulfonated organosilane functionalized GO (SSi-GO)/SPEEK, sulfonated imidized GO (SIGO)/sulfonated poly(imide) (SPI), sulfonated GO (SGO)/sulfonated CS (SCS)/CS, GO/sulfonated polyvinylidene fluoride (SPVDF), PA functionalized GO (PGO)/Nafion, polyaniline decorated GO (PANI-GO)/SPEEK, and phosphorous acid and sulfanilic acid modified GO (PS-MGO)/sulfonated polyethylene grafted polystyrene (PE-PS) composite PEMs were successfully fabricated. Improved proton conductivities and reduced methanol permeabilities were obtained for all of them.…”

Section: Introductionmentioning

confidence: 99%

Construction of Surface Sulfonic and Amino Acid–Base Pair Modified Graphene Oxide for Effectively Promoting the Selectivity of the Proton Exchange Membrane

Rao,

Zhang,

Liu

et al. 2023

ACS Appl. Polym. Mater.

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Surface −SO3H and −NH2 acid–base pair modified graphene oxide (BAGO) was constructed by first polydopamine (PDA) coating onto GO and subsequent reaction with 2,2′-benzidinedisulfonic acid (BA). The composite proton exchange membrane (PEM) with prominently elevated selectivity (selectivity: the ratio of proton conductivity to methanol permeability) was prepared by incorporation of BAGO into the Nafion matrix. The functional groups (−SO3H and −NH2) onto BAGO could form consecutive acid–base pairs for proton transfer benefitting from the tethering function of GO and the interconnection of the functional groups. In addition, continuous acid–base pair proton conducting pathways could be constructed between −NH2 of BAGO and −SO3H of Nafion. These enormously expedited the proton transportation of the composite PEM, enabling its proton conductivity to reach 0.262 S cm–1 under 95% RH, 90 °C, twice that of the recast Nafion (RN). Furthermore, significantly attenuated methanol permeability was achieved by the composite PEM due to the methanol barrier effect of BAGO and reduced free volume of the composite PEM. Meanwhile, the maximum power density of the composite PEM in a direct methanol fuel cell reached 32.5 mW cm–2, approximately 62% larger than that of RN (20.1 mW cm–2). This work offers a valuable guidance for constructing the composite PEM with effectively improved selectivity.

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Polyaniline decorated graphene oxide on sulfonated poly(ether ether ketone) membrane for direct methanol fuel cells application

Cited by 23 publications

References 57 publications

The effect of polydopamine coated multi‐walled carbon nanotube on the wettability of sulfonated poly(ether ether ketone) nanocomposite as a proton exchange membrane

The effect of polydopamine coated multi‐walled carbon nanotube on the wettability of sulfonated poly(ether ether ketone) nanocomposite as a proton exchange membrane

An Effective Methanol-Blocking Cation Exchange Membrane Modified with Graphene Oxide Nanosheet for Direct Methanol Fuel Cells

Construction of Surface Sulfonic and Amino Acid–Base Pair Modified Graphene Oxide for Effectively Promoting the Selectivity of the Proton Exchange Membrane

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