Improved proton conduction of sulfonated poly (ether ether ketone) membrane by sulfonated covalent organic framework nanosheets

Yin, Zhuoyu; Geng, Haobo; Yang, Pengfei; Shi, Benbing; Fan, Chunyang; Quan, Peng; Wu, Hong; Jiang, Zhongyi

doi:10.1016/j.ijhydene.2021.05.119

Cited by 25 publications

(19 citation statements)

References 52 publications

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“…All samples (1 × 5 cm 2 ) were dipped into 2 M of H 2 SO 4 for 24 hours and then steeped in deionized water for 24 hours before the test. Finally, the membranes were tightly clamped in the measurement window and completely immersed in the deionized water 3,31 . The conductivities were computed as follows:

σ = L / (RS) .

…”

Section: Methodsmentioning

confidence: 99%

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Construction of effective transmission channels by anchoring metal‐organic framework on side‐chain sulfonated poly(arylene ether ketone sulfone) for fuel cells

Shi

et al. 2022

Intl J of Energy Research

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A series of novel organic-inorganic hybrid membranes assembled by side-chain type sulfonated poly(arylene ether ketone sulfone) with amino groups (Am-SPAEKS-DBS) and ZIF-67 were prepared. Am-SPAEKS-DBS containing double bonds was synthesized by condensation polymerization, and the AMPS was grafted onto the main chain by post sulfonation. ZIF-67 was prepared by an ordinary solvent method. The structures of ZIF-67, Am-SPAEKS-DBS, and hybrid membranes were analyzed by proton nuclear magnetic resonance ( 1 H NMR), scanning electron microscopy (SEM), powder X-ray diffraction (PXRD) and Fourier transform infrared (FT-IR). All hybrid membranes had good dimensional stability and excellent oxidation stability. In addition, the swelling ratios of all hybrid membranes were low (<17.46%) at even 100 C, and the oxidative stability was higher than 92%. The proton conductivities of this series of membranes were much higher (0.0540.069 S cm À1 at 30 C, 0.088-0.116 S cm À1 at 80 C) than pure membrane (0.038 S cm À1 at 30 C, 0.076 S cm À1 at 80 C).The experimental results exhibited that the comprehensive properties of hybrid membranes are good, and hybrid membranes had substantially possible as proton exchange membranes. Highlights• Metal-organic frameworks were anchored on side-chain type organic polymer backbone.• The hybrid PEMs showed good dimensional stability and excellent oxidation stability.• The imidazole as a ligand in ZIF-67 contributes a part of the dissociated protons. K E Y W O R D Sorganic-inorganic hybrid membranes, proton conductivities, side-chains, sulfonated poly(arylene ether ketone sulfone), ZIF-67 Mengchi Ju and Qingyuan Shi contributed equally to this work.

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σ = L / (RS) .

…”

Section: Methodsmentioning

confidence: 99%

“…Finally, the membranes were tightly clamped in the measurement window and completely immersed in the deionized water. 3,31 The conductivities were computed as follows:…”

Section: Proton Conductivitymentioning

confidence: 99%

Construction of effective transmission channels by anchoring metal‐organic framework on side‐chain sulfonated poly(arylene ether ketone sulfone) for fuel cells

Shi

et al. 2022

Intl J of Energy Research

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“…As a consequence of the thermogravimetric analysis (TGA), thermal stability can be determined. There are three processes in the degradation of SPEEK, which are the evaporation of the solvent, the breakdown of SO 3 H, and the main chain of SPEEK, respectively 29–31 . When more SO 3 H was added into SPEEK as the DS grew, the thermal stability of membranes worsened.…”

Section: Introductionmentioning

confidence: 99%

The advances development of proton exchange membrane with high proton conductivity and balanced stability in fuel cells

Wei

Sui

Meng

et al. 2023

J of Applied Polymer Sci

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In the proton exchange membrane fuel cell, proton exchange membrane (PEM) serves as both the main conductor of protons and the fuel‐blocking membrane. Thus, high proton conductivity and excellent stability are expected for PEMs at the same time. According to chemical structure, this review divides PEM into three groups. Recently, high‐performance PEM has been made possible by controlling chemical structure, organic–inorganic hybrid composite membranes, and nanofiber composite membranes. One of them, nanofiber composite membranes, is distinguished by long‐range order and is capable of achieving both strong proton conductivity with exceptional stability. The high‐performance PEM has been accomplished by the presence of an acid‐rich layer, acid–base interaction, and proton transport channel in PEMs are also summarized in this paper. We believe that our discussion will help the researcher create high‐performance PEM and pave the way for further developments in the field of energy materials as a whole.

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“…The commercial PEMs of Nafion membranes produced by DuPont exhibit good stability and high proton conductivity 8,9 . However, the disadvantages, such as excessively expensive price, high fuel permeability, strong dependence on water, and rapid performance degradation at elevated temperatures, limit the large‐scale use of Nafion membranes 10,11 . Sulfonated aromatic polymers with excellent mechanical properties and chemical stability are considered to be possible to replace Nafion membranes 12,13 .…”

Section: Introductionmentioning

confidence: 99%

“…dependence on water, and rapid performance degradation at elevated temperatures, limit the large-scale use of Nafion membranes. 10,11 Sulfonated aromatic polymers with excellent mechanical properties and chemical stability are considered to be possible to replace Nafion membranes. 12,13 Wang et al prepared sulfonated poly(ether ether ketone) (SPEEK) membranes with different sulfonation degrees, and the proton conductivities of SPEEK membranes with degrees of sulfonation (DS) of 39% and 47% were close to that of Nafion115 membranes.…”

mentioning

confidence: 99%

Enhancing proton conductivity of proton exchange membranes via anchoring imidazole‐loaded MIL‐101‐NH ₂ onto sulfonated poly (arylene ether ketone sulfone) by chemical bonding

Meng

Zhang

et al. 2022

Intl J of Energy Research

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Summary Organic‐inorganic modification by incorporating metal‐organic frameworks to copolymers is one strategy to advance the properties of membranes. Here, the imidazole‐loaded MIL‐101‐NH2 (Im@MIL‐101‐NH2) was prepared and chemically anchored onto sulfonated poly (arylene ether ketone sulfone) containing carboxyl groups (C‐SPAEKS). The chemical stabilities, mechanical properties, and dimensional stabilities of compound membranes were increased. The highest tensile strength of C‐SPAEKS‐IM6 reach to 105.36 MPa. The weight retention rate of hybrid membranes was still higher than 90% after the oxidation stability test at 80°C. Furthermore, the introducing Im@MIL‐101‐NH2 could construct new proton transport paths, and the amphiphilic imidazole molecules embedded inside Im@MIL‐101‐NH2 could act as proton carriers. The C‐SPAEKS‐IM6 showed a maximum proton conductivity of 0.082 S cm−1 at 90°C. Additionally, the peak power density of C‐SPAEKS‐IM6 was 171.52 mW cm−2. To sum up, this series of membranes have latent capacity in the application of fuel cells. Im@MIL‐101‐NH2 was anchored on polymer backbones via the Hinsberg reaction. Chemical bonds between MOFs and polymer chains improved compatibility of two phases. Cross‐linking structure enhanced the mechanical property and oxidative stability. The sulfonamide groups could devote protons and transport it to MOFs.

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Improved proton conduction of sulfonated poly (ether ether ketone) membrane by sulfonated covalent organic framework nanosheets

Cited by 25 publications

References 52 publications

Construction of effective transmission channels by anchoring metal‐organic framework on side‐chain sulfonated poly(arylene ether ketone sulfone) for fuel cells

Construction of effective transmission channels by anchoring metal‐organic framework on side‐chain sulfonated poly(arylene ether ketone sulfone) for fuel cells

The advances development of proton exchange membrane with high proton conductivity and balanced stability in fuel cells

Enhancing proton conductivity of proton exchange membranes via anchoring imidazole‐loaded MIL‐101‐NH ₂ onto sulfonated poly (arylene ether ketone sulfone) by chemical bonding

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Improved proton conduction of sulfonated poly (ether ether ketone) membrane by sulfonated covalent organic framework nanosheets

Cited by 25 publications

References 52 publications

Construction of effective transmission channels by anchoring metal‐organic framework on side‐chain sulfonated poly(arylene ether ketone sulfone) for fuel cells

Construction of effective transmission channels by anchoring metal‐organic framework on side‐chain sulfonated poly(arylene ether ketone sulfone) for fuel cells

The advances development of proton exchange membrane with high proton conductivity and balanced stability in fuel cells

Enhancing proton conductivity of proton exchange membranes via anchoring imidazole‐loaded MIL‐101‐NH 2 onto sulfonated poly (arylene ether ketone sulfone) by chemical bonding

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Enhancing proton conductivity of proton exchange membranes via anchoring imidazole‐loaded MIL‐101‐NH ₂ onto sulfonated poly (arylene ether ketone sulfone) by chemical bonding