Lateral-aligned sulfonated carbon-nanotubes/Nafion composite membranes with high proton conductivity and improved mechanical properties

Yin, Chongshan; Xiong, Bangyun; Liu, Qicheng; Li, Jingjing; Qian, Libing; Zhou, Yawei; He, Chunqing

doi:10.1016/j.memsci.2019.117356

Cited by 42 publications

(16 citation statements)

References 57 publications

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“…Li et al, 2017). However, its applicability is limited by a trade-off between membrane flux and selectivity and several studies have been aimed at fabricating novel membranes incorporating various nanomaterials such as carbon nanotubes (Yin et al, 2019), graphene oxides (Chu et al, 2017), metalorganic frameworks (Hua et al, 2019), and MXenes made from titanium carbide (Ti3C2Tx) due to this problem (Wei et al, 2019), which allows separating fluxes or a flux of particulate material, marking a challenge that should evaluate the interactions between pollutants and these membranes based on new nanomaterials (Al-Hamadani et al, 2020).…”

Section: Scientometric Drinking Water Studiesmentioning

confidence: 99%

Scientometric study of drinking water treatments technologies: Present and future challenges

et al. 2021

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The knowledge of the tendencies of the drinking water treatments was changing through the previous decades and it is necessary to improve it for the benefit of the human beings. In this sense, the purpose of the study was to develop a scientometric study about the drinking water treatments in the period 2010-2020 for providing the state of art of the studies about the drinking water treatments in diverse knowledge areas and new orientations for future research. For this purpose, a search of the information was performed both in the Web of Science (WoS) and Scopus databases, and all articles and reviews related to the field of water treatment or chemistry were included. The results showed that China, the USA and the Netherlands have the majority of the most cited publications and various related multidisciplinary topics, such as infrastructure, technologies and pollution. Therefore, the study allows concluding that there is a need for research on different technologies that contribute positively to obtaining quality water for consumption and for the use of routine activities, being the combination and integration of the different treatment processes a challenge for future studies.

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Section: Scientometric Drinking Water Studiesmentioning

confidence: 99%

Scientometric study of drinking water treatments technologies: Present and future challenges

et al. 2021

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“…On the contrary, at lower HR, PES sulfonated behaves as a dielectric. It should be noted that Nafion 117 was tested at a higher RH than the [27,28] due to pretreatment applied with hydrogen peroxide (solution 3%), sulfuric acid (0.5 M) and distilled water (boiled) described by Yang et al [29] and Kawamura et al [30]. In addition, the proton conductivity found for the Nafion 117 membrane is approximately between 4 to 6x10-3 S/cm at 47.6 and 66°C, respectively, with 30% RH [31].…”

Section: Proton Conductivitymentioning

confidence: 99%

Development and characterization of poly(oxy-1,4-phenylenesulfonyl-1,4-phenylene) for proton exchange membranes

Lancheros¹,

Puerta²,

Jiménez³

et al. 2021

J Appl Eng Science

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Proton Exchange Membranes (PEMs) are materials developed with a focus on high-performance, low-cost features to achieve promising fuel cell technology in stationary, portable, and transportation facilities. In this study, we synthesized membranes from Poly (oxy-1,4-phenylenesulfonyl-1,4-phenylene) (PES) sulfonated with modification by adding nanoclay to improve the mechanical properties of PEMs. The sulfonation time and the concentration of nanoclays directly favored properties such as contact angle, water absorption, porosity, and mechanical properties. However, a higher concentration of nanoclays (e.g., 10% by weight) damages the mechanical properties of PES membranes specifically. The membrane with 5% by weight of nanoclay and a sulfonation time of 2 h achieved the best performance.

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“…The proton conductivity of the multilayer sulfonated CNT/Nafion increased as the number of membrane layers increased (~0.33 S/cm at 152°C of 80 layers of the composite membranes). The alignment of the sulfonated CNT and the proton‐conducting pathways in the lateral direction was also influenced by the multilayered structure in the composite membranes (<1 μm ultrathin layers membranes, especially) 149 . Sulfonation of CNT was found for its capability to reduce swollen and avoiding the dissolution of sulfonated polyarylene ether nitrile (SPEN) in high‐temperature condition.…”

Section: Literature Studies On Membrane Fuel Cell Containing Cnt Go mentioning

confidence: 99%

“…The alignment of the sulfonated CNT and the proton-conducting pathways in the lateral direction was also influenced by the multilayered structure in the composite membranes (<1 μm ultrathin layers membranes, especially). 149 Sulfonation of CNT was found for its capability to reduce swollen and avoiding the dissolution of sulfonated polyarylene ether nitrile (SPEN) in hightemperature condition. The best proton conductivity of the multilayer membrane obtained when 3 wt% loading of SCNTs, which were 0.094 S/cm and 0.275 S/cm at 20 C and 80 C, respectively, which found to be higher than the commercial Nafion membrane.…”

Section: Pem-based With Carbon Nanotubes As a Conductive Fillermentioning

confidence: 99%

Carbon nanotube, graphene oxide and montmorillonite as conductive fillers in polymer electrolyte membrane for fuel cell: an overview

2020

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Summary This study discusses three conductive materials—carbon nanotube, graphene oxide, and montmorillonite which recently being used as fillers in membranes of fuel cell application and commonly hybridized with polymers as the matrix. The polymer electrolyte membrane fuel cell (PEMFC) is using a polymer‐based membrane as the electrolyte, which might require filler or functionalization to enhance their cell performance. This review provides brief information for the researcher who insists on improving the current PEM using these potential fillers, specified with required values of membrane properties measurement. It also entails the special features of the nanofillers concerning their chemical structure and electrochemical properties based on recent studies. As electricity is generated from an external fuel source, the membranes that are used should be more than 0.1 S/cm of proton conductivity, low fuel permeability (< 1.37 x 10−6 cm2/s), cheap, and high stability in dry and wet condition. PEM is widely being utilized together with filler(s) incorporated as a purpose to overcome recent drawbacks encountered by the commercial Nafion membrane solely. Hence, the fillers embedded in the membrane are necessarily to have the promising characteristics, acknowledging the potential performances of three conductive nanofillers of (a) carbon nanotubes which is well‐known of its electrical conducting potential with three cylindrical design, (b) graphene oxide which is a reactive carbonaceous material with its multifunctional groups and (c) montmorillonite which is one of the clay types that has tetrahedral and octahedral layers of alumina‐silicates for producing better hybrid polymer electrolyte membrane. Highlights Carbon nanotube, graphene oxide, and montmorillonite are highly promising conductive fillers with outstanding cell performances based on previous studies. Carbon nanotube, graphene oxide, and montmorillonite are chosen as incorporated fillers recently due to their rolling up direction (chirality vector of graphene sheet), reactive functional groups attached on the carbon atoms and ionic multilayers of the tetrahedral and octahedral sheet, respectively. High proton conductivity, low electronic conductivity, low fuel permeability, low water transport, low production cost, and high mechanical stability in both dry and wet condition are properties that should be portrayed by a good hybrid membrane.

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Lateral-aligned sulfonated carbon-nanotubes/Nafion composite membranes with high proton conductivity and improved mechanical properties

Cited by 42 publications

References 57 publications

Scientometric study of drinking water treatments technologies: Present and future challenges

Scientometric study of drinking water treatments technologies: Present and future challenges

Development and characterization of poly(oxy-1,4-phenylenesulfonyl-1,4-phenylene) for proton exchange membranes

Carbon nanotube, graphene oxide and montmorillonite as conductive fillers in polymer electrolyte membrane for fuel cell: an overview

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