Modification of Nafion membrane by polyaniline providing uniform polymer distribution throughout the membrane

Pyshkina, O. A.; Novoskoltseva, Оlga А.; Zakharova, Julia

doi:10.1007/s00396-018-4431-7

Cited by 12 publications

(4 citation statements)

References 46 publications

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“…From figure 5, showed that the sulfonated polysulfone has a proton conductivity that reaches the highest at a temperature of 25°C with of 4.87 x 10 -5 S/cm. According to previous research [12], the proton conductivity of the Nafion membrane is 10 -1 S/cm with a temperature below 100°C. From the table, it can be compared that the proton conductivity of the Nafion membrane is higher than that of sulfonated polysulfone.…”

Section: Resultsmentioning

confidence: 78%

Synthesis and characterization of proton conducting membranes based on human nail keratin and sulfonated polysulfone

Hardiyanti,

Gustian,

Banon

et al. 2023

J. Phys.: Conf. Ser.

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Synthesis and characterization of proton conducting membranes based on human nail keratin and sulfonated polysulfone has been carried out. This research was conducted to make a proton conducting membrane based on acid-base pairs. In this study, human nail was dissolved using NaOH solvent. Through a neutralization process using glacial acetic acid, then evaporation of the solution was carried out to obtain human nail keratin. Sulfonated polysulfone composite membrane-human nail keratin was prepared in mass ratio of 3.5/0.5; 3.3/0.7; 3/1. Composite membranes were characterized by functional group analysis, XRD (X-Ray Diffraction), cation exchange capacity, degree of swelling and proton conductivity. Functional group analysis of sulfonated polysulfone-human nail keratin composite membranes showed interactions at peaks of 3000-3500 cm−1. The composite membrane has the highest cation exchange capacity, which is 2.02 meq/g on the composite membrane variation of 3/1. The greatest degree of swelling in the variation of 3/1 was 33.23%. The highest proton conductivity in the mass variation of 3/1 is 4.87 x 10−5 S/cm. The results of XRD analysis showed that the composite membrane synthesized by human nail keratin and sulfonated polysulfone had semicrystalline properties.

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Section: Resultsmentioning

confidence: 78%

Synthesis and characterization of proton conducting membranes based on human nail keratin and sulfonated polysulfone

Hardiyanti,

Gustian,

Banon

et al. 2023

J. Phys.: Conf. Ser.

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“…Despite the fact that the electronic conductivity of membranes used in fuel cells or energy storage devices is undesirable, conducting polymers are often used for their modification. The composites with polyaniline and polypyrrole are the most studied 13–17 . Compatibility is an important parameter for the formation of copolymers and composite membranes 18–20 .…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, high concentration of conducting polymer monomer (EDOT, aniline, etc.) is known to lead to its polymerization on the membrane surface, 14,33 which can critically affect ion transport. In most cases, iron (III) salts are used as oxidants for chemical polymerization 17,33 .…”

Section: Introductionmentioning

confidence: 99%

The influence of poly(3,4‐ethylenedioxythiophene) modification on the transport properties and fuel cell performance of Nafion‐117 membranes

Стенина

Yurova

Titova

et al. 2021

J of Applied Polymer Sci

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Nafion‐117/PEDOT composite membranes were synthesized by in situ chemical polymerization of 3,4‐ethylenedioxythiophene (EDOT) using ammonium persulfate as an oxidant. The polymerization of EDOT in Nafion membranes for various EDOT/oxidant treatment sequences was studied for the first time. PEDOT introduction leads to a slight decrease in both the ion‐exchange capacity and water uptake of the composite membranes, as well as to an increase in cationic transport. Membranes initially treated with an oxidant exhibit better conductivity and lower hydrogen permeability. The effect of both modification of Nafion‐117 membranes by PEDOT and hot‐pressing of hydrogen‐oxygen membrane‐electrode assemblies (MEAs) on the performance of proton‐exchange membrane fuel cells was studied. The maximum power density of the fabricated MEAs increases 1.5‐fold: from 510 (for a pristine Nafion‐117 membrane) to 810 mW cm−2 (for a membrane modified by PEDOT). The current density at a voltage of 0.4 V reaches 1248 and 2246 mA cm−2, respectively.

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“…Another study directly polymerized CP onto the Nafion, but this resulted in slow actuation responses (Khmelnitskiy et al, 2019). Using a high oxidant to CP monomer ratio, CP can polymerize onto the Nafion surface, but this leads to an uneven CP coating and a interfacial layer with a fixed thickness and shape (Tan and Bélanger, 2005;Pyshkina et al, 2019). Since this restricts the freedom in designing CP actuators another method of fabrication is desired.…”

Section: Introductionmentioning

confidence: 99%

Template-Assisted Self-Assembly of Conductive Polymer Electrodes for Ionic Electroactive Polymers

Huet²,

Naguib

2020

Front. Bioeng. Biotechnol.

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Ionic electroactive polymers (ionic EAPs) can greatly aid in biomedical applications where micro-sized actuators are required for delicate procedures. Since these types of actuators generally require platinum or gold metallic electrodes, they tend to be expensive and susceptible to delamination. Previous research has solved this problem by replacing the metallic electrodes with conductive polymers (CP) and forming an interpenetrating polymer network (IPN) between the conductive polymer (CP) and the solid polymer electrolyte (SPE). Since these actuators contain toxic ionic liquids, they are unsuitable for biological applications. In this study, we present a novel and facile method of fabricating a biocompatible and ionic liquid-free actuator that uses semi-IPN to hold the CP and Nafion-based SPE layers together. Surface activated fabrication treatment (SAFT) is applied to the precursor-Nafion membrane in order to convert the sulfonyl fluoride groups on the surface to sulfonate. Through template-assisted self-assembly, the CP electrodes from either polyaniline (PANI) or poly(3,4-ethylenedioxythiophene) (PEDOT) interlock with the surface treated precursor-Nafion membrane so that no delamination can occur. The electrodes growth pattern, interfacial layer's thickness, and shape can be controlled by adjusting the SAFT concentration and duration.

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Modification of Nafion membrane by polyaniline providing uniform polymer distribution throughout the membrane

Cited by 12 publications

References 46 publications

Synthesis and characterization of proton conducting membranes based on human nail keratin and sulfonated polysulfone

Synthesis and characterization of proton conducting membranes based on human nail keratin and sulfonated polysulfone

The influence of poly(3,4‐ethylenedioxythiophene) modification on the transport properties and fuel cell performance of Nafion‐117 membranes

Template-Assisted Self-Assembly of Conductive Polymer Electrodes for Ionic Electroactive Polymers

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