Fabrication of a SGO/PVDF‐g‐PSSA composite proton‐exchange membrane and its enhanced performance in microbial fuel cells

Li, Chen; Wang, Lei; Wang, Xudong; Li, Cuicui; Xu, Qing; Li, Guangyuan

doi:10.1002/jctb.5783

Cited by 28 publications

(10 citation statements)

References 61 publications

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“…Using the FTIR spectrum of graphite as a reference, the oxygen functional the asymmetric stretching of SO 3 and the C S stretching vibration because of the presence of the sulfone group. 40,41 The physicochemical properties of graphite powder and its modification were studied by Raman spectroscopy, and the chemical shift of pure graphite powder was observed. In Figure 5B, the peaks at 1597 and 2424 cm À1 are assigned to the G-band and 2D-band, respectively, with an intensity ratio I 2D /I G (area) of 1.8, indicating a bilayer or single-layer graphite, which also has a small lateral size and low crystallinity with high electronic conductivity.…”

Section: Resultsmentioning

confidence: 99%

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Sulfonated graphene oxide/sulfonated poly (2,6‐ dimethyl – 1,4‐phenylene oxide) as a potential proton exchange membrane for iron air flow battery application

Phela

Sigwadi

Msomi

2023

Polymers for Advanced Techs

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A series of proton exchange membranes (PEMs) of sulfonated poly(2,6‐dimethyl‐1,4‐phenylene oxide) (SPPO) with different sulfonated graphene oxide (SGO) (0, 0.25, 0.5, 0.75, 1.0, 1.5%) were prepared for possible application in Iron‐air/flow battery. The presence of SGO in the membrane improved the water uptake of all membranes prepared and decreased the swelling ratio. The SPPO/1% w/w SGO showed good properties with higher water uptake of 44.1%, water retention of 42.48% and swelling ratio of 21.4% at 25°C. However, the 0.75% SGO exhibited the highest proton conductivity of 0.98 S/cm and better dispersion, elemental distribution, and morphology. In addition, SGO improved the thermal stability of all composite membranes. The chemical stability of all membranes remained good after 7 days in a 1 M HCL solution. The SPPO/0.75%w/w SGO showed increased proton conductivity when degradation properties were evaluated. Compared to Nafion 117, all composites showed lower iron crossover. Nafion had a high permeability of 3.03 × 10−7 cm−2/s, which is 75% higher than the 7.6 × 10−8 cm−2/s of SPPO/SGO‐1.5% and 52% higher than the 1.46 × 10−7 cm−2/s of SPPO/SGO‐0.75%. The results indicate that SGO is a good inorganic filler for the composite proton exchange membrane and stable enough for possible application in an iron‐air/flow battery.

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Section: Resultsmentioning

confidence: 99%

“…Upon sulfonation of graphene oxide, a shoulder band appeared overlapping the OH stretch at 2912 cm −1 , which is due to the presence of the sulfonic group. The peaks at 458, 1013, and 1178 cm −1 are attributed to the asymmetric stretching of SO 3 and the CS stretching vibration because of the presence of the sulfone group 40,41 …”

Section: Resultsmentioning

confidence: 99%

Sulfonated graphene oxide/sulfonated poly (2,6‐ dimethyl – 1,4‐phenylene oxide) as a potential proton exchange membrane for iron air flow battery application

Phela

Sigwadi

Msomi

2023

Polymers for Advanced Techs

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“…They found that the PBI had a high CO to hydrogen selectivity in the combustor exhaust. The sensor’s performance using PBI was better than that of Nafion 117 in terms of influence from the humidity. − …”

Section: Fundamental Of Fuel-cell-type Gas Sensorsmentioning

confidence: 94%

Comprehensive Review of Fuel-Cell-Type Sensors for Gas Detection

Mehrpooya

Ganjali

Mousavi

et al. 2023

Ind. Eng. Chem. Res.

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Gas detection based on the electrochemical cells has recently been paid attention. Because of the many applications of fuel cell sensors, several investigations have been done on fuel-cell-type sensors for gas detection. In this study, the research works are categorized based on the type of the most used fuel cell sensors, such as CO, H2, methanol, and ethanol. Moreover, the manufacturing, applied technologies and the operating conditions of them, including the limit of detection, detection ranges, and response time of the fuel cells, are reviewed and discussed. Finally, according to the previous investigations that have been carried out, the gaps are introduced and evaluated to prepare beneficial suggestions for future investigations. According to the literature, humidity management using Pt–Cu/C is one of the most used manufacturing methods for improving a fuel cell sensor’s global and specific sensitivity. In addition, Nafion MEA with JM20 exhibits better detection performance of methanol sensors. Moreover, using nanotubes of multiwall carbon and nanoparticles of Pt–Pd in manufacturing shows proven improvements regarding the limit of detection and detection range for ethanol fuel cell sensors. PEFC-type sensor cells can improve the detection of CO to 0.2 ppm. Furthermore, the required targets for hydrogen fuel cell sensors in terms of safety and performance announced by the U.S. Department of Energy, for example, the response time of 1 s, are not reported in the open literature.

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“…Further, reducing fossil fuel resources provokes the need to find alternative clean and sustainable energy sources. Among various alternative sources, proton exchange membrane fuel cells (PEMFCs) have attracted immense attention owing to their green energy aspect, high efficiency for a prolonged period, stationary power and portability 1,2 . The PEM is considered as a vital part of a PEMFC to provide a proton pathway during oxygen and fuel separation 3 .…”

Section: Introductionmentioning

confidence: 99%

Composite proton exchange membrane of cellulose triacetate polymer integrated with polyacrylic acid and triazole based copolymer for balanced proton conduction and methanol permeability

Deepa

Sasikumar

Elakkiya

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND Proton exchange membranes (PEMs) could prompt proton transport with long‐term oxidative and hydrolytic durability with little methanol crossover under humidified conditions. Cellulose triacetate (CTA)‐based PEMs were fabricated by reinforcing with 4 wt.% of polyacrylic acid (PAA) and polymerized triazole (PTZA) combination of acrylic acid/triazole acrylate copolymer. RESULTS The presence of PAA and PTZA copolymer in the CTA membrane was confirmed using Fourier transform infrared spectroscopy and X‐ray diffraction. The variations of proton conductivity, methanol crossover and water uptake of the PTZA copolymer‐reinforced CTA matrix were evaluated. Higher proton conductivity of 2.313 × 10−4 S cm−1 and minimal methanol permeability of 1.773 × 10−7 cm2 s−1 were obtained for the CTA/PTZA–20 membrane compared to a pristine CTA membrane. Furthermore, the oxidative tolerability was about 99.6% for CTA/PAA membrane, and hydrolytic stability was 97.78% for the CTA/PTZA–20 membrane, higher than that of the pristine CTA membrane. CONCLUSIONS The increase in proton conduction compared to pristine CTA membrane could be attributed to the presence of triazole moiety, which acts as a proton facilitator in the conduction process. Additionally, an increase in hydrolytic stability, oxidative tolerability and lower methanol crossover results indicated that the PTZA copolymer‐reinforced CTA PEMs have potential for use in fuel cell applications. © 2021 Society of Chemical Industry (SCI).

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Fabrication of a SGO/PVDF‐g‐PSSA composite proton‐exchange membrane and its enhanced performance in microbial fuel cells

Cited by 28 publications

References 61 publications

Sulfonated graphene oxide/sulfonated poly (2,6‐ dimethyl – 1,4‐phenylene oxide) as a potential proton exchange membrane for iron air flow battery application

Sulfonated graphene oxide/sulfonated poly (2,6‐ dimethyl – 1,4‐phenylene oxide) as a potential proton exchange membrane for iron air flow battery application

Comprehensive Review of Fuel-Cell-Type Sensors for Gas Detection

Composite proton exchange membrane of cellulose triacetate polymer integrated with polyacrylic acid and triazole based copolymer for balanced proton conduction and methanol permeability

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