Crosslinked side-chain-type anion exchange membranes with enhanced conductivity and dimensional stability

Lin, Chen; Zhuo, Yizhi; Hu, En Ning; Zhang, Qiu Gen; Zhu, Ai Mei

doi:10.1016/j.memsci.2017.05.063

Cited by 87 publications

(27 citation statements)

References 44 publications

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“…Despite high IEC, LS 3.1 showed proton conductivity lower than LS 1.6 ( Figure 2C ). This is not unusual and in some cases it is to excessive water uptake leading to dilution of ions in bulk membranes (Xu et al, 2014 ; Lin et al, 2017 ; Li et al, 2018 ; Long et al, 2019 ). However, for thin ionomer films, the connection between IEC and ion conductivity may not be that straight forward as many other factors (such as ion mobility, organization of ion-conducting groups/phase segregation, interfacial interactions among water-ionomer and substrate, and more) (Farzin et al, 2019 ) may come into play in a complex manner to give rise to a certain value of ion conductivity.…”

Section: Resultsmentioning

confidence: 99%

Ionomers From Kraft Lignin for Renewable Energy Applications

et al. 2020

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Section: Resultsmentioning

confidence: 99%

Ionomers From Kraft Lignin for Renewable Energy Applications

et al. 2020

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“…In the AFM images, the darker domain is related to hydrophilic clusters to the quaternary ammonium group (PDDA), while the brighter region is corresponds to hydrophobic CS skeletons in the MWCNTs‐CP‐OH − membrane. A comparison of Figure 2D‐F shows that after the incorporation of MWCNTs, the hydrophilic domains became larger and interconnected which is conducive for the formation of ionic conductive channels …”

Section: Resultsmentioning

confidence: 99%

“…A comparison of Figure 2D-F shows that after the incorporation of MWCNTs, the hydrophilic domains became larger and interconnected which is conducive for the formation of ionic conductive channels. 54,55 To examine their mechanical properties, the tensile strength (TS), elongation at break (E b ), and Young modulus (Y M ) of the MWCNTs-CP-OH − membranes were illustrated in Table 1. The TS, E b , and Y M ranges of the MWCNTs-CP-OH − membranes are 24.09 to 36.75 MPa, 6.78% to 10.2%, and 608.87 to 716.96 MPa, respectively.…”

Section: Microstructure and Mechanical Properties Of The Membranesmentioning

confidence: 99%

Multi‐walled carbon nanotubes incorporation into cross‐linked novel alkaline ion‐exchange membrane for high efficiency all‐solid‐state supercapacitors

Guo

Wang

et al. 2020

Int J Energy Res

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Summary An increasing number of focus has been paid to the study of supercapacitors in the context of the increasing demand for energy storage. As an important component of supercapacitors, the electrolyte has become a focus of research. In this work, an inexpensive and readily approach for synthesizing the polymer electrolytes was established by introducing multi‐walled carbon nanotubes (MWCNTs) as the filler on the basis of cross‐linked chitosan (CS) and poly‐(diallyldimethylammonium chloride) (PDDA), followed by a facile ion‐exchange in the KOH solution. The resultant MWCNTs‐CP‐OH− membrane manifests superb chemical stability, high hydroxide conductivity (0.033 S cm−1), and enhanced mechanical/chemical properties. Consequently, the fabricated all‐solid‐state supercapacitors using MWCNTs‐CP‐OH− composite membrane as a polymer electrolyte displayed prominent cyclic stability over 4000 cycles with 75.3% retention of the capacitance. Aforementioned merits make the MWCNTs‐CP‐OH− membrane highly promising candidate electrolyte material in all‐solid‐state supercapacitors.

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“…After the equilibrium, the HCl solution was titrated using 0.05 M NaOH standard solution. IEC was calculated via the given equation [16,17].…”

Section: Characterizationsmentioning

confidence: 99%

Anion Exchange Membranes Obtained from Poly(arylene ether sulfone) Block Copolymers Comprising Hydrophilic and Hydrophobic Segments

et al. 2020

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The anion exchange membrane may have different physical and chemical properties, electrochemical performance and mechanical stability depending upon the monomer structure, hydrophilicity and hydrophobic repeating unit, surface form and degree of substitution of functional groups. In current work, poly(arylene ether sulfone) (PAES) block copolymer was created and used as the main chain. After controlling the amount of NBS, the degree of bromination (DB) was changed in Br-PAES. Following that, quaternized PAES (Q-PAES) was synthesized through quaternization. Q-PAES showed a tendency of enhancing water content, expansion rate, ion exchange capacity (IEC) as the degree of substitution of functional groups increased. However, it was confirmed that tensile strength and dimensional properties of membrane reduced while swelling degree was increased. In addition, phase separation of membrane was identified by atomic force microscope (AFM) image, while ionic conductivity is greatly affected by phase separation. The Q-PAES membrane demonstrated a reasonable power output of around 64 mW/cm2 while employed as electrolyte in fuel cell operation.

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Crosslinked side-chain-type anion exchange membranes with enhanced conductivity and dimensional stability

Cited by 87 publications

References 44 publications

Ionomers From Kraft Lignin for Renewable Energy Applications

Ionomers From Kraft Lignin for Renewable Energy Applications

Multi‐walled carbon nanotubes incorporation into cross‐linked novel alkaline ion‐exchange membrane for high efficiency all‐solid‐state supercapacitors

Anion Exchange Membranes Obtained from Poly(arylene ether sulfone) Block Copolymers Comprising Hydrophilic and Hydrophobic Segments

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