NH2-UiO-66 coated fibers to balance the excellent proton conduction efficiency and significant dimensional stability of proton exchange membrane

Zhu, Bensheng; Sui, Yang; Wei, Peng; Wen, Jihong; Cong, Chuanbo; Meng, Xiaoyu; Zhou, Qiong

doi:10.1016/j.memsci.2021.119214

Cited by 32 publications

(17 citation statements)

References 38 publications

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“…SPEEK and PI nanofiber was fabricated and can be seen in our previous work [34,35]. SPEEK was dissolved in DMSO solution to acquire the clean solutions.…”

Section: Fabrication Of X-pi/speek Ncmsmentioning

confidence: 99%

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Study on the PI/SPEEK nanofiber composite proton exchange membrane for fuel cells

Wei

Huang

et al. 2022

J. Phys.: Conf. Ser.

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Sulfonated poly ether ether ketone (SPEEK) can be selected as the candidate for proton exchange membrane (PEM) used in the fuel cell for its cheap price, great proton conductivity and stability. To further improve its performance, more SO3H were induced into SPEEK but would result in excessive swelling and losing its stability. Polyimide (PI) nanofibers have excellent mechanical properties and can be a supporter to improve stability. In this work, the PI nanofiber was put in the middle of the SPEEK to create the PI/SPEEK nanofiber composite membranes (NCMs). Its morphology of PI/SPEEK NCMs observed by SEM showed that PI nanofiber was almost in the middle of these NCMs. The proton conductivity and swelling ratio of 3%PI/SPEEK were 271.7 mScm-1 and 20.0% at 60°C and 100% RH, which is 29.6% higher and 90.4% lower than that of pristine SPEEK. It was intact after the single-cell test in the fuel cell and its power density was 199.1 mWcm-2, but for pure SPEEK there was some broken area on it. The reason was that PI/SPEEK can maintain the durability of the channels for the proton to transport and it can be attributed to an interaction at their interface of PI nanofiber and SPEEK. The 3%PI/SPEEK NCM will have a broad application prospect in PEM fuel cells.

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“…SPEEK and PI nanofiber was fabricated and can be seen in our previous work [34,35]. SPEEK was dissolved in DMSO solution to acquire the clean solutions.…”

Section: Fabrication Of X-pi/speek Ncmsmentioning

confidence: 99%

“…Mechanical stability was characterized through the machine (SHIMADZU, AGS-X). The test conditions and processing methods of IEC values, proton conductivity, E a , swelling ratio (SR), water uptake (WU) and fuel cell performance are all the same compared with our previous work [34,35].…”

Section: Characterizationmentioning

confidence: 99%

Study on the PI/SPEEK nanofiber composite proton exchange membrane for fuel cells

Wei

Huang

et al. 2022

J. Phys.: Conf. Ser.

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“…Compared with SPEEK, the mechanical property of the percentage of UiO-66 of hybrid membrane increased 30%. 20 Liu et al prepared the MOF-polymer hybrid membranes. The proton conductivity of the hybrid membrane was 0.259 S cm À1 at 80 C and 100% relative humidity, and the accurate methanol permeability of hybrid membrane was 2.08 Â 10 À9 cm 2 s À1 .…”

Section: Introductionmentioning

confidence: 99%

“…Zhou et al reported NU6@PPNF‐SPEEK with great mechanical properties. Compared with SPEEK, the mechanical property of the percentage of UiO‐66 of hybrid membrane increased 30% 20 . Liu et al prepared the MOF‐polymer hybrid membranes.…”

Section: Introductionmentioning

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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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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“…[1][2][3] To better meet the practical application requirements of PEMFCs, the proton exchange membrane should possess high proton conductivity, superior mechanical strength and dimensional stability. 4,5 Increasing the acid group (-SO 3 H, -PO 3 H 2 ) content is an efficient approach to promoting the proton conductivity of PEMs. However, the resultant membranes oen face excessive swelling or dissolution due to the weak interaction between polymer chains.…”

Section: Introductionmentioning

confidence: 99%

Ultra-robust, highly proton-conductive polymer carbon dot membranes through bioinspired complexation

Shi

Pang

et al. 2022

J. Mater. Chem. A

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NH2-UiO-66 coated fibers to balance the excellent proton conduction efficiency and significant dimensional stability of proton exchange membrane

Cited by 32 publications

References 38 publications

Study on the PI/SPEEK nanofiber composite proton exchange membrane for fuel cells

Study on the PI/SPEEK nanofiber composite proton exchange membrane 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

Ultra-robust, highly proton-conductive polymer carbon dot membranes through bioinspired complexation

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