High performance proton exchange membranes with double proton conduction pathways by introducing MOF impregnated with protic ionic liquid into SPEEK

Wang, Xinxin; Rong, Yi; Wang, Fengdong; Zhang, Chen-Xi; Wang, Qing‐Lun

doi:10.1016/j.micromeso.2022.112314

Cited by 24 publications

(10 citation statements)

References 47 publications

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“…When MOF is directly doped with SPPO, amino and coordination water molecules on MOF and sulfonic acid groups in SPPO matrix form a rich hydrogen bond network, which promotes proton movement. In the interior of the IL-MOF, the imino and water molecules of the IL can also form hydrogen bonds to achieve proton conduction . In cross-linked membranes, because sulfonimide itself is acidic and can produce protons, abundant hydrogen bond network is formed between sulfonic acid group, amino group, and uncoordinated water molecule in MOF-SO 2 –PPO- X and IL-MOF-SO 2 –PPO-3.…”

Section: Resultsmentioning

confidence: 99%

“…In the interior of the IL-MOF, the imino and water molecules of the IL can also form hydrogen bonds to achieve proton conduction. 45 In crosslinked membranes, because sulfonimide itself is acidic and can produce protons, 46 abundant hydrogen bond network is formed between sulfonic acid group, amino group, and uncoordinated water molecule in MOF-SO 2 −PPO-X and IL-MOF-SO 2 −PPO-3. In the hydrogen bond network, proton jumps between H 3 O + and −SO 3 − through the formation of hydrogen bonds to achieve proton transfer (Figure 5).…”

Section: Ft-ir Of the Composite Membranesmentioning

confidence: 99%

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Chlorosulfonated Polyphenylene Ether Metal–Organic Framework Nanomaterial Composite Proton Exchange Membranes for Fuel Cells

Zhang,

Qin,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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Proton exchange membrane (PEM) is a key part of a PEM fuel battery. It is a challenge in the development of PEMs to enhance the proton conductivity. A series of chlorosulfonated polyphenylene ether (PPO−SO 2 −Cl)−metal−organic framework (MOF) nanomaterial composite membranes with high proton conductivity, named MOF-SO 2 −PPO, were prepared by anchoring Cr-MIL-101-NH 2 nanoparticles in PPO−SO 2 −Cl through Hinsberg reaction.A directly physically doped membrane based on sulfonated poly(phenyl ether) (SPPO) and MOF, named MOF/ SPPO, was also prepared. The water absorption, swelling ratio, ion exchange capacity, and proton conductivity of the two composite membranes were tested. The MOF-SO 2 −PPO membranes had better thermal stability and water absorption than the membranes formed by traditional doping. At 343 K and 98% relative humidity, MOF-SO 2 −PPO exhibited a high proton conductivity of 4.9 × 10 −2 ± 2.3% S cm −1 , which was 1.96 times that of MOF/SPPO. Furthermore, additional modification entailed anchoring the MOF, modified with ionic liquid, onto PPO−SO 2 −Cl, yielding IL-MOF-SO 2 −PPO-3 with optimal content. The proton conductivity of IL-MOF-SO 2 −PPO-3 surpassed that of SPPO by 24 times. This work provides feasible insights into the application of MOF nanomaterials to PEMs in fuel cells.

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Section: Resultsmentioning

confidence: 99%

Section: Ft-ir Of the Composite Membranesmentioning

confidence: 99%

Chlorosulfonated Polyphenylene Ether Metal–Organic Framework Nanomaterial Composite Proton Exchange Membranes for Fuel Cells

Zhang,

Qin,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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“…Zhang and Wang fabricated proton-conductive MMMs containing IL-functionalized MIL-125-NH 2 for the first time, distinguishing their work from MIL-101-based MMM studies. 70 MIL-125-NH 2 was synthesized with slight modifications based on a previous study. 71 The reaction between 2-aminoterephthalic acid and Ti(O-iPr) 4 occurred in a mixed solvent of DMF and methanol at 150 °C for 72 hours, resulting in the formation of MIL-125-NH 2 (Fig.…”

Section: Il-functionalized Mof Composite Membranesmentioning

confidence: 99%

Ionic liquid-functionalized metal organic frameworks and their composite membranes for enhanced proton transport

Song,

Koo,

Kang

2024

CrystEngComm

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“…Proton exchange membrane (PEM) is acknowledged as the key central material for fuel cells . Highly performing, proton-conducting IL/MOF composites have been explored to require PEM to function as a solid-state proton conductor. − To develop PEM, Xu et al incorporated the binary EIMS-HTFSA IL into mesoporous MIL-101 to obtain EIMS-HTFSA/MIL-101 composites on proton conduction. EIMS-HTFSA/MIL-101 exhibited a H + conductivity of 2 × 10 –4 S/cm, which exceeded that of the pristine MIL-101 by ∼6 orders of magnitude.…”

Section: Il/mof Composites For Membrane Separationmentioning

confidence: 99%

Ionic Liquids Functionalized MOFs for Adsorption

et al. 2023

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Metal–organic frameworks (MOFs) and ionic liquids (ILs) represent promising materials for adsorption separation. ILs incorporated into MOF materials (denoted as IL/MOF composites) have been developed, and IL/MOF composites combine the advantages of MOFs and ILs to achieve enhanced performance in the adsorption-based separation of fluid mixtures. The designed different ILs are introduced into the various MOFs to tailor their functional properties, which affect the optimal adsorptive separation performance. In this Perspective, the rational fabrication of IL/MOF composites is presented, and their functional properties are demonstrated. This paper provides a critical overview of an emergent class of materials termed IL/MOF composites as well as the recent advances in the applications of IL/MOF composites as adsorbents or membranes in fluid separation. Furthermore, the applications of IL/MOF in adsorptive gas separations (CO2 capture from flue gas, natural gas purification, separation of acetylene and ethylene, indoor pollutants removal) and liquid separations (separation of bioactive components, organic-contaminant removal, adsorptive desulfurization, radionuclide removal) are discussed. Finally, the existing challenges of IL/MOF are highlighted, and an appropriate design strategy direction for the effective exploration of new IL/MOF adsorptive materials is proposed.

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High performance proton exchange membranes with double proton conduction pathways by introducing MOF impregnated with protic ionic liquid into SPEEK

Cited by 24 publications

References 47 publications

Chlorosulfonated Polyphenylene Ether Metal–Organic Framework Nanomaterial Composite Proton Exchange Membranes for Fuel Cells

Chlorosulfonated Polyphenylene Ether Metal–Organic Framework Nanomaterial Composite Proton Exchange Membranes for Fuel Cells

Ionic liquid-functionalized metal organic frameworks and their composite membranes for enhanced proton transport

Ionic Liquids Functionalized MOFs for Adsorption

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