Journal ArticleDOI
Zwitterionic microcapsules as water reservoirs and proton carriers within a Nafion membrane to confer high proton conductivity under low humidity.
TLDR
Zwitterionic microcapsules based on sulfobetaine with tunable hierarchical structures, superior water retention properties, and high proton conduction capacities are synthesized via precipitation polymerization and renders the composite membranes with significantly enhanced proton conductivity.Abstract:
Zwitterionic microcapsules (ZMCs) based on sulfobetaine with tunable hierarchical structures, superior water retention properties, and high proton conduction capacities are synthesized via precipitation polymerization. The incorporation of ZMCs into a Nafion matrix renders the composite membranes with significantly enhanced proton conductivity especially under low humidity. The composite membrane with 15 wt % ZMC-I displayed the highest proton conductivity of 5.8 × 10–2 S cm–1 at 40 °C and 20% relative humidity after 90 min of testing, about 21 times higher than that of the Nafion control membrane. The increased proton conductivity is primarily attributed to the versatile roles of ZMCs as water reservoirs and proton conductors for rendering a stable water environment and an additional proton conduction pathway within the membranes. This study may contribute to the rational design of water-retaining and proton-conducting materials.read more
Citations
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Journal ArticleDOI
Nanostructured Ion‐Exchange Membranes for Fuel Cells: Recent Advances and Perspectives
TL;DR: Polymer-based materials with tunable nanoscale structures and associated microenvironments hold great promise as next-generation ion-exchange membranes for acid or alkaline fuel cells, but the relationships between nanostructure, physical and chemical microenvironment, and ion-transport properties are critical to the rational design and development of IEMs.
Journal ArticleDOI
A concise guide to sustainable PEMFCs: recent advances in improving both oxygen reduction catalysts and proton exchange membranes
TL;DR: In this Critical Review, recent advances in optimizing both cathode materials and PEMs as well as the future and peculiar challenges associated with each of these systems will be discussed.
Journal ArticleDOI
Enhanced proton conductivity of Nafion hybrid membrane under different humidities by incorporating metal-organic frameworks with high phytic acid loading.
TL;DR: In this study, phytic acid was first immobilized by MIL101 via vacuum-assisted impregnation method and utilized as a novel filler to incorporate into Nafion to fabricate hybrid proton exchange membrane for application in PEMFC under different relative humidities (RHs), especially under low RHs.
Journal ArticleDOI
Incorporating Zwitterionic Graphene Oxides into Sodium Alginate Membrane for Efficient Water/Alcohol Separation
Jing Zhao,Yiwei Zhu,Guangwei He,Ruisi Xing,Fusheng Pan,Zhongyi Jiang,Peng Zhang,Xingzhong Cao,Baoyi Wang +8 more
TL;DR: In this paper, zwitterionic graphene oxides (PSBMA@GO) nanosheets were prepared and incorporated into SA membrane for efficient water permeation and water/alcohol separation.
Journal ArticleDOI
Facile synthesis of zwitterionic polymer-coated core–shell magnetic nanoparticles for highly specific capture of N-linked glycopeptides
Yajing Chen,Zhichao Xiong,Lingyi Zhang,Jiaying Zhao,Quanqing Zhang,Li Peng,Weibing Zhang,Weibing Zhang,Mingliang Ye,Hanfa Zou +9 more
TL;DR: The resulting Fe3O4@SiO2@PMSA demonstrated an outstanding ability for glycopeptide enrichment with high selectivity, extremely high detection sensitivity, large binding capacity, high enrichment recovery and rapid magnetic separation.
References
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Journal ArticleDOI
Transport in proton conductors for fuel-cell applications: simulations, elementary reactions, and phenomenology.
TL;DR: Theoretical Methodologies and Simulation Tools, and Poisson−Boltzmann Theory, and Phenomenology of Transport inProton-Conducting Materials for Fuel-CellApplications46664.2.1.
Journal ArticleDOI
Ultralow-Fouling, Functionalizable, and Hydrolyzable Zwitterionic Materials and Their Derivatives for Biological Applications
Shaoyi Jiang,Zhiqiang Cao +1 more
TL;DR: Mixed-charge materials have been shown to be equivalent to zwitterionic materials in resisting nonspecific protein adsorption when they are uniformly mixed at the molecular scale.
Journal ArticleDOI
Recent development of polymer electrolyte membranes for fuel cells.
Hongwei Zhang,Pei Kang Shen +1 more
Journal ArticleDOI
Sequential proton transfer through water bridges in acid-base reactions.
TL;DR: Proton exchange between an acid and a base in aqueous solution is shown to proceed by a sequential, von Grotthuss–type, proton-hopping mechanism through water bridges.
Journal ArticleDOI
Design and properties of functional hybrid organic–inorganic membranes for fuel cells
TL;DR: This critical review presents a discussion on the major advances in the field of organic-inorganic hybrid membranes for fuel cells application with a promising family for controlling conductivity, mechanical and chemical properties.
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