Molecular Complexation of Polymers and Metal Oxide Clusters for Semicrystalline, Thermoplastic Anhydrous Proton Exchange Membranes in Fuel Cells

Zheng, Zhaohui; Liu, Lu; Sun, Weigang; Liang, Yuling; Chen, Jiadong; Yang, Junsheng; Zhang, Rongchun; Yin, Panchao

doi:10.1021/acs.jpclett.3c01319

Cited by 5 publications

(2 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…288 Yin et al designed a semicrystalline and thermoplastic anhydrous proton exchange membrane for fuel cells via the cocrystallization of poly(ethylene glycol) (PEG) and SiW, and the presence of PEG chains with two distinct dynamic modes, as revealed by 13 C ssNMR spectra, is closely related to its mechanical properties and proton transportation. 289 Tritt-Goc et al studied the local dynamics and proton transport in imidazole-doped nanocrystalline cellulose (CNC-Im), and they found the imidazole simultaneously exhibit two different reorientation and exchange rate via variable temperature 1 H− 15 N and 1 H− 13 C CP experiments. 290 HETCOR experiments further revealed the binding between nitrogen protons of imidazole and hydroxyl groups of cellulose or possibly residual water.…”

Section: Discrete Motions In a Crystallinementioning

confidence: 99%

“…The 1D DQ-filtered 1 H NMR spectrum at the MAS frequency of 60 kHz clearly unravels the presence of mobile protons from SiW, making SiW an efficient proton conductor in the POM-based liquid-crystalline electrolytes . Yin et al designed a semicrystalline and thermoplastic anhydrous proton exchange membrane for fuel cells via the cocrystallization of poly(ethylene glycol) (PEG) and SiW, and the presence of PEG chains with two distinct dynamic modes, as revealed by 13 C ssNMR spectra, is closely related to its mechanical properties and proton transportation . Tritt-Goc et al studied the local dynamics and proton transport in imidazole-doped nanocrystalline cellulose (CNC-Im), and they found the imidazole simultaneously exhibit two different reorientation and exchange rate via variable temperature 1 H– 15 N and 1 H– 13 C CP experiments .…”

Section: Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Elucidations of Structure and Molecular Dynamics of Complex Polymers by State-of-the-Art Solid-State NMR Spectroscopy

Zhang,

Chen,

Miyoshi

2024

Macromolecules

Self Cite

View full text Add to dashboard Cite

Solid-state nuclear magnetic resonance (ssNMR) has been playing an indispensable role in revealing the interplay of structure and molecular dynamics in polymers at different states. In this Perspective, we first provide an overview about the fundamental spin interactions in ssNMR and then highlight some recent progress on sensitivity-enhanced ssNMR spectroscopy and in situ NMR. Moreover, we highlight ssNMR applications in the field of polymer crystallization, molecular dynamics, chemical reactions, supramolecular polymers, energy materials, and so on. Finally, our personal perspective is given on the future development at the crossroad of ssNMR and polymer science.

show abstract

Section: Discrete Motions In a Crystallinementioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Elucidations of Structure and Molecular Dynamics of Complex Polymers by State-of-the-Art Solid-State NMR Spectroscopy

Zhang,

Chen,

Miyoshi

2024

Macromolecules

Self Cite

View full text Add to dashboard Cite

show abstract

Pom Functionalized Ionogels with Tunable Optical, Mechanical, Electrical, and Sensory Properties

Mu,

Chen,

Dai

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Ionogels, with wide applications in tissue engineering, soft robotics, and flexible iontronic devices, require tunable optical, mechanical, and electrical properties for advanced functionality applications. Here, a facile strategy is reported to tune a set of properties of ionogels via tuning the redox states of the added polyoxometalate (POM) clusters. Upon external electrical stimuli, the POM clusters in the ionogels can be reversibly tuned from a transparent, oxidized state to a blue, reduced state. The redox states of the POM anions influence the POM‐polymer interactions, which promotes the in situ modulation of the ionogel properties reversibly over a large window: optical transparency from 91% to 7%, dissipated energy from 0.9 to 3.1 MJ m−3, elastic modulus from 1.5 to 2 MPa, conductivity from 1.6 × 10−4 to 2.2 × 10−4 S cm−1. Meanwhile, the sensory properties of the ionogels can be modulated simultaneously. For strain sensing and pressure sensing, the GF can be tuned from 2.3 to 7.2, and the sensitivity can be tuned from 0.8 to 1.2 kPa−1. Such an ionogel with tunable optical, mechanical, and electrical properties may find a variety of applications meeting specific demands. The POM functionalization strategy may also bring new insights into the design of the stimuli‐responsive ionogels.

show abstract

The Hybridization of Polymers with Metal Oxide Clusters for the Design of Non‐Fluorinated Proton Exchange Membranes

Liu,

Gao,

Dong

et al. 2024

Chemistry A European J

View full text Add to dashboard Cite

As the key component of various energy storage and conversion devices, proton exchange membranes (PEMs) have been attracting significant interest. However, their further development is limited by the high cost of perfluorosulfonic acid polymers and the poor stability of acid‐dopped non‐fluorinated polymers. Recently, a new group of PEMs has been developed by hybridizing polyoxometalates (POMs), a group of super acidic sub‐nanoscale metal oxide clusters, with polymers. POMs can serve simultaneously as both proton sponges and stabilizing agents, and their complexation with polymers can further improve polymers’ mechanical performance and processability. Enormous efforts have been focused on studying supramolecular complexation or covalent grafting of POMs with various polymers to optimize PEMs in terms of cost, mechanical properties and stabilities. This concept summarizes recent advances in this emerging field and outlines the design strategies and application perspectives employed for using POM‐polymer hybrid materials as PEMs.

show abstract

Molecular Complexation of Polymers and Metal Oxide Clusters for Semicrystalline, Thermoplastic Anhydrous Proton Exchange Membranes in Fuel Cells

Cited by 5 publications

References 45 publications

Elucidations of Structure and Molecular Dynamics of Complex Polymers by State-of-the-Art Solid-State NMR Spectroscopy

Elucidations of Structure and Molecular Dynamics of Complex Polymers by State-of-the-Art Solid-State NMR Spectroscopy

Pom Functionalized Ionogels with Tunable Optical, Mechanical, Electrical, and Sensory Properties

The Hybridization of Polymers with Metal Oxide Clusters for the Design of Non‐Fluorinated Proton Exchange Membranes

Contact Info

Product

Resources

About