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A Solvent-Free Covalent Organic Framework Single-ion Conductor Based on ion-dipole interaction for All-Solid-State Lithium Organic Batteries

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Nano-Micro Letters 2024年第12期16卷 189-200页

作者： Zhongping Li Kyeong-Seok Oh Jeong-Min Seo Wenliang Qin Soohyoung Lee Lipeng Zhai Changqing Li Jong-Beom Baek Sang-Young Lee Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei-RoSeodaemun-GuSeoul 03722Republic of Korea School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology(UNIST)50 UNIST-GilEonyang-EupUlju-GunUlsan 44919Republic of Korea Henan Key Laboratory of Functional Salt Materials Center for Advanced Materials ResearchZhongyuan University of TechnologyZhengzhou 450007People’s Republic of China Department of Battery Conflation Engineering Yonsei University50Yonsei-RoSeodaemun-GuSeoul 03772Republic of Korea Department of Battery Engineering Yonsei University50Yonsei-RoSeodaemun-GuSeoul 03772Republic of Korea

Single-ion conductors based on covalent organic frameworks(COFs)have garnered attention as a potential alternative to currently prevalent inorganic ion conductors owing to their structural uniqueness and chemical ***,the sluggish Li+conduction has hindered their practical ***,we present a class of solvent-free COF single-ion conductors(Li-COF@P)based on weak ion-dipole interaction as opposed to traditional strong ion-ion *** ion(Li+from the COF)-dipole(oxygen from poly(ethylene glycol)diacrylate embedded in the COF pores)interaction in the Li-COF@P promotes ion dissociation and Li+migration via directional ionic *** by this single-ion transport behavior,the Li-COF@P enables reversible Li plating/stripping on Li-metal electrodes and stable cycling performance(88.3%after 2000 cycles)in organic batteries(Li metal anode||5,5’-dimethyl-2,2’-bis-p-benzoquinone(Me2BBQ)cathode)under ambient operating conditions,highlighting the electrochemical viability of the Li-COF@P for all-solid-state organic batteries.

关键词： Solid organic single-ion conductors Solvent-free covalent organic frameworks All-solid-state Li organic batteries ion-dipole interaction Pore functionalization

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EFFECTS OF NH_4Cl ON THE interaction BETWEEN POLY(ETHYLENE OXIDE) AND ionIC SURFACTANTS IN AQUEOUS SOLUTionS

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Chinese Journal of Polymer Science 2008年第1期26卷 31-37页

作者： Li, Jing Li, Hua-zhen Yang, Hai-yang Zhu, Ping-ping He, Ping-sheng Univ Sci & Technol China Dept Polymer Sci & Engn Hefei 230026 Peoples R China

The interaction of poly(ethylene oxide)(PEO)with the ionic surfactants,sodium dodecylsulfate(SDS)and cetyltrimethylammonium chloride(CTAC)respectively,in aqueous solutions containing a certain concentration of NH_4Cl, is studied by the viscosity *** has been found that the ion-dipole interaction between PEO and ionic surfactants is changed considerably by the organic *** anionic suffactant of SDS,the addition of NH_4Cl into solution strengthens the interaction between PEO and the headgroup o...

关键词： Viscosity ion-dipole interaction Non-ionic polymer ionic surfactant NH_4Cl

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Drag reduction and shear resistance properties of ionomer and hydrogen bond systems based on lauryl methacrylate

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Petroleum Science 2011年第3期8卷 357-364页

作者： Yu Ping Li Changyu Zhang Changqiao Chen Shiwei Fang Shu Sun Hui School of Chemistry and Chemical Engineering Shandong University Jinan 250061 China

Based on molecular dynamics simulation results, a lauryl methacrylate polymer with drag reduction and shear resistance properties was designed, and synthesized by emulsion polymerization using 2-vinyl pyridine and methyl methacrylate as the polar polymerization monomer. After ionization of lauryl methacrylate polymer, an ion-dipole interaction based drag reduction agent （DRA） was obtained. The existence of ion-dipole interaction was proven through characterization of the drag-reducing agent from its infrared （IR） spectrum. The pilot-scale reaction yield of the DRA under optimum conditions was investigated, and the drag reduction and shear resistance properties were measured. The results show that： l） The ion-dipole or hydrogen bonding interaction can form ladder-shaped chains, therefore the synthesized DRA has shear resistance properties; 2） The larger the molecular weight （MW） and more concentrated the distribution of MW, the better the drag reduction efficiency and the performance of the ionomer system was superior to that of the hydrogen bonding system; 3） With increasing shear frequency, the drag-reduction rates of both the DRAs decreased, and the drag reduction rate of the ionomer system decreased more slowly than of the corresponding hydrogen bonding system. From the point of view of drag reduction rate and shear resistance property, the ionomer system is more promising than the hydrogen bonding system

关键词： Molecular design ion-dipole interaction hydrogen bonding drag reduction rate shearresistance property

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