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Plancha, Maria João; Rangel, C. M.; Sequeira, C. A. C.; Hudson, Michael J.

doi:10.1023/a:1018496323172

Cited by 10 publications

(5 citation statements)

References 15 publications

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“…In order to provide comparisons, porphyrin-based metallo-COF-Zn (porCOF-Zn) and bpy-based metallo-COF-Zn (bpyCOF-Zn) were synthesized and characterized. The ion conductivity and metal concentration of polymers were obtained from references. ,− The conductivity–temperature relationship of pdiCOF-Zn-3 follows an Arrhenius-type behavior, and the activation energy of pdiCOF-Zn-3 was calculated to be 0.32 eV (Supporting Figure 53), which is comparable with previous studies (Supporting Table 7).…”

Section: Results and Discussionsupporting

confidence: 79%

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Ion-Conductive Metallo-Covalent Organic Frameworks Constructed with Tridentate Ligand and Zn Nodes

Chen,

Zhang,

Yuan

et al. 2023

J. Am. Chem. Soc.

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Metallo-covalent organic frameworks (metallo-COFs) are organometallic scaffolds in which covalently bonded organic frameworks are interwoven with metal-coordinated pendant groups. Unlike the rigid ligands traditionally used for metal coordination, the utilization of "soft" ligands allows for configurable topology and pore structure in metallo-COFs, particularly when the ligands are generated in situ during dynamic synthesis. In this study, we present the rational synthesis of metallo-COFs based on pyridine-2,6-diimine (pdi), wherein the incorporation of Zn 2+ ions and in situ-generated tridentate ligands (pdi) yields metallo-COFs with a square-like lattice. In the absence of Zn 2+ ions, a topological isomer COF with a Kagome lattice is instead produced. Thus, the presence or absence of Zn 2+ ions allows us to switch between two distinct morphologies corresponding to metallo-COF or COF. In comparison to Brønsted acid-catalyzed COF, which necessitates postmetallization for loading metal ions, the metal-templated COF synthesis method yields COFs with improved crystallinity and approximately 1:1 [Zn 2+ ]/ ligand composition. Building upon the metal-templated COF synthesis approach, we successfully synthesized pdiCOF-Zn-2 and pdiCOF-Zn-3, which possess square-like and honeycomb lattices, respectively. The enhanced crystallinity and near 1:1 [Zn 2+ ]/ ligand composition of pdiCOF-Zn-3 (honeycomb) facilitate its application as ion transport channels.

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Section: Results and Discussionsupporting

confidence: 79%

“…pdiCOF-Zn-3 (abbreviated as Zn-3 ), exhibits an ion conductivity of 5.58 × 10 –5 S cm –1 at room temperature. This ion conductivity is over 1 order of magnitude higher than the ion conductivities of PEO polymers (10 –6 ∼ 10 –8 S cm –1 at). ,− In contrast, porCOF-Zn and bpyCOF-Zn show almost no conductivity.…”

Section: Results and Discussionmentioning

confidence: 86%

Ion-Conductive Metallo-Covalent Organic Frameworks Constructed with Tridentate Ligand and Zn Nodes

Chen,

Zhang,

Yuan

et al. 2023

J. Am. Chem. Soc.

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“…As expected, the ionic conductivity is gradually enhanced with the increase in the content of zinc salts, which is attributed to the increase in mobile ions. When r reaches 1.4, the ion conductivity is above 0.05 mS cm –1 that is much higher than most SPEs based on zinc ions. ,,, The ionic conductivity of the PHP SPE in this work was higher than those of most liquid-free polymer electrolytes with similar thicknesses. Bernstorff et al prepared (PEO) 8 ZnCl 2 polymer electrolytes with the ionic conductivity value of 5 × 10 –7 S cm –1 at 30 °C, and the thickness of the electrolyte film was about 20 μm .…”

Section: Results and Discussionmentioning

confidence: 65%

“…Dry polymers such as polyethylene oxide (PEO) − and poly(4-vinylpyridine) (P4VP) were first used as SPEs for their noninflammability. However, low ion conductivity at ambient temperature (10 –6 S cm –1 for PEO and 10 –6 S cm –1 for P4VP copolymer) severely restricted their practical application even though it could be slightly improved by doping of inorganic nanoparticles .…”

Section: Introductionmentioning

confidence: 99%

Self-Healing Solid Polymer Electrolyte with High Ion Conductivity and Super Stretchability for All-Solid Zinc-Ion Batteries

Liu

Tang

Luo

et al. 2021

ACS Appl. Mater. Interfaces

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The zinc-ion battery (ZIB) is a novel energy storage device, an attractive alternative to the lithium-ion battery. The frequently used aqueous electrolyte suffers from many problems such as zinc dendrites and leakage, which prompts hydrogel electrolytes and solid electrolytes as good replacements. However, hydrogel electrolytes are usually unstable, owing to water volatilization. Herein, a novel solid polymer electrolyte (SPE) utilizing coordination of zinc ions is designed and then introduced into an all-solid ZIB. Benefiting from the unique coordination structure between the polymer and zinc ions, the SPE shows outstanding flexibility, high ion conductivity, and self-healing properties. In addition, the imine bonds in the polymer allow the electrolyte to degrade in acid environments, endowing its recyclability. More importantly, solid-state ZIBs based on the polymer electrolytes exhibit an impressive cycling stability (125% capacity retention after 300 cycles) and a high coulombic efficiency (94% after 300 cycles). The results demonstrate the promising potentials of the developed SPEs that can be used in all-solid ZIBs.

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“…[29] For the polymer-based SSEs, the low ionic conductivities of 10 −7 to 10 −6 S cm −1 restrain their application in an energy storage system. [30][31][32][33] Zhi et al adopted poly(vinylidene fluoride-hexafluoropropylene) film filled with poly(ethylene oxide)/ionic-liquid-based Zn salt to construct SSE, with an ionic conductivity of 0.17 × 10 −2 S cm −1 , achieving a hydrogen-free and dendite-free solid-state zinc-ion battery (SSZIB). [34] Additionally, Zhi et al explored a PEO-based SSE softened by ionic liquid, and the ionic conductivity achieved 2.3 × 10 −3 S cm −1 .…”

Section: Introductionmentioning

confidence: 99%

Nanoengineered Functional Cellulose Ionic Conductor Toward High‐ Performance All‐Solid‐State Zinc‐Ion Battery

Tu,

Liang,

Song

et al. 2024

Adv Funct Materials

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The rechargeable zinc‐ion battery is regarded as a promising candidate for the next‐generation energy storage system, however, zinc dendrite growth and hydrogen evolution reaction (HER) have greatly hindered the practical application of the battery. Herein, a functionalized, nano‐engineering Zn2+ coordinated carboxylate cellulose solid‐state electrolyte (denoted as Zn‐CCNF@XG) for zinc‐ion battery is constructed through a straightforward approach. According to the experimental and density functional theory (DFT) results of dissociation energy, the notably decreased dissociation energy by −COOH is favorable to Zn2+ de‐coordinating and rapid ion‐hopping in Zn‐CCNF@XG to achieve high ionic conductivity and transference number. More importantly, the engineered molecular channels are beneficial to enlarging the distance between the nanofibril chains, providing a larger space for the movement of Zn2+. Benefiting from the coordination of Zn2+ with −OH in carboxylate cellulose nanofibrils, Zn‐CCNF@XG as a good ionic conductor displays a high ionic conductivity of 1.17 × 10−4 S cm−1 and transference number of 0.78. The Zn||NaV3O8·1.5H2O full cell with Zn‐CCNF@XG maintains a capacity retention of 83.46% with a coulombic efficiency of 99.99% after 3000 cycles (1 A g−1). The proposed strategy by introducing a functional group to cellulose nanofibrils effectively avoids the dendrite and HER, providing valuable guidelines for the practical application of zinc‐ion batteries.

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Cited by 10 publications

References 15 publications

Ion-Conductive Metallo-Covalent Organic Frameworks Constructed with Tridentate Ligand and Zn Nodes

Ion-Conductive Metallo-Covalent Organic Frameworks Constructed with Tridentate Ligand and Zn Nodes

Self-Healing Solid Polymer Electrolyte with High Ion Conductivity and Super Stretchability for All-Solid Zinc-Ion Batteries

Nanoengineered Functional Cellulose Ionic Conductor Toward High‐ Performance All‐Solid‐State Zinc‐Ion Battery

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