NH₄⁺ Charge Carrier Coordinated H‐Bonded Organic Small Molecule for Fast and Superstable Rechargeable Zinc Batteries

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(38)

Published: July 29, 2023

Organic small molecules as high-capacity cathodes for Zn-organic batteries have inspired numerous interests, but are trapped by their easy-dissolution in electrolytes. Here we knit ultrastable lock-and-key hydrogen-bonding networks between 2, 7-dinitropyrene-4, 5, 9, 10-tetraone (DNPT) and NH4+ charge carrier. DNPT with octuple-active carbonyl/nitro centers (H-bond acceptor) redox-exclusively accessible flexible tetrahedral ions donator) exclude larger rigid Zn2+ , due to a lower activation energy (0.14 vs. 0.31 eV). coordinated H-bonding chemistry conquers the stability barrier of electrolyte, gives fast diffusion kinetics non-metallic A stable two-step 4e- coordination cathode harvests high capacity (320 mAh g-1 ), high-rate capability (50 ) an ultralong life (60,000 cycles). This finding points new paradigm H-bond stabilized organic design advanced zinc batteries.

Language: Английский

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Crystallographic types depended energy storage mechanism for zinc storage

Nano Energy, Journal Year: 2024, Volume and Issue: 125, P. 109524 - 109524

Published: March 26, 2024

Language: Английский

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Multielectron Redox‐Bipolar Tetranitroporphyrin Macrocycle Cathode for High‐Performance Zinc‐Organic Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(16)

Published: Feb. 19, 2024

Bipolar organics fuse the merits of n/p-type redox reactions for better Zn-organic batteries (ZOBs), but face capacity plafond due to low density active units and single-electron reactions. Here we report multielectron redox-bipolar tetranitroporphyrin (TNP) with quadruple two-electron-accepting n-type nitro motifs dual-electron-donating p-type amine moieties towards high-capacity-voltage ZOBs. TNP cathode initiates high-kinetics, hybrid anion-cation 10e

Language: Английский

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Non‐Metal Ion Storage in Zinc‐Organic Batteries

Advanced Science, Journal Year: 2024, Volume and Issue: 11(19)

Published: March 13, 2024

Abstract Zinc‐organic batteries (ZOBs) are receiving widespread attention as up‐and‐coming energy‐storage systems due to their sustainability, operational safety and low cost. Charge carrier is one of the critical factors affecting redox kinetics electrochemical performances ZOBs. Compared with conventional large‐sized sluggish Zn 2+ storage, non‐metallic charge carriers small hydrated size light weight show accelerated interfacial dehydration fast reaction kinetics, enabling superior metrics for Thus, it valuable ongoing works build better ZOBs ion storage. In this review, versatile cationic (H + , NH 4 ) anionic (Cl − OH CF 3 SO 2− first categorized a brief comparison respective physicochemical properties chemical interactions redox‐active organic materials. Furthermore, work highlights implementation effectiveness ions in ZOBs, giving insights into impact types on (capacity, rate capability, operation voltage, cycle life) cathodes. Finally, challenges perspectives non‐metal‐ion‐based outlined guild future development next‐generation energy communities.

Language: Английский

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Unveiling Organic Electrode Materials in Aqueous Zinc-Ion Batteries: From Structural Design to Electrochemical Performance

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: May 14, 2024

Aqueous zinc-ion batteries (AZIBs) are one of the most compelling alternatives lithium-ion due to their inherent safety and economics viability. In response growing demand for green sustainable energy storage solutions, organic electrodes with scalability from inexpensive starting materials potential biodegradation after use have become a prominent choice AZIBs. Despite gratifying progresses molecules electrochemical performance in AZIBs, research is still infancy hampered by certain issues underlying complex electrochemistry. Strategies designing electrode AZIBs high specific capacity long cycling life discussed detail this review. Specifically, we put emphasis on unique electrochemistry different redox-active structures provide in-depth understanding working mechanisms. addition, highlight importance molecular size/dimension regarding profound impact performances. Finally, challenges perspectives developing point view future We hope valuable evaluation our context give inspiration rational design high-performance

Language: Английский

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Solvent-guided nanoarchitecturing of heterodiatomic carbon superstructures for high-performance zinc-ion hybrid capacitors

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 482, P. 148912 - 148912

Published: Jan. 22, 2024

Language: Английский

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Asymmetric Charge Distribution of Active Centers in Small Molecule Quinone Cathode Boosts High‐Energy and High‐Rate Aqueous Zinc‐Organic Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(16)

Published: Jan. 2, 2024

Abstract Small molecule quinone compounds are attractive cathode materials for rechargeable aqueous zinc‐organic batteries (AZOBs) because of their structural diversity and low‐cost merits. Among them, nonpolar quinones dominant given the relatively low solubilities in electrolytes. However, poor electronic conductivity accumulated Coulombic repulsion lead to underutilized active sites sluggish redox kinetics. Here, polar 2,6‐dimethoxy‐1,4‐benzoquinone ( m ‐DMBQ) works as an advanced AZOB with unexpectedly superior performance over isomer 2,5‐dimethoxy‐1,4‐benzoquinone p ‐DMBQ). The asymmetric charge distribution centers p−π conjugated backbone ‐DMBQ induces reduced bandgap improved activity, thus achieving a high specific capacity 312 mAh g −1 approaching theoretical limit. Additionally, lowest unoccupied molecular orbital energy level is lowered increased average discharge voltage 0.88 V. Characterizations computational studies revealed boosted competitiveness H + relative Zn 2+ significantly enhanced transfer kinetics reversibility. As result, as‐fabricated achieves density 275 Wh kg based on along high‐rate capability long‐term cycling stability. This work provides new engineering strategy through regulating symmetry boosting storage organic cathodes.

Language: Английский

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Duodecuple H‐Bonded NH₄⁺ Storage in Multi‐Redox‐Site N‐Heterocyclic Cathode for Six‐Electron Zinc–Organic Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(45)

Published: May 28, 2024

Abstract Designing multiple redox sites in electroactive organic cathodes that allow more electron transfer is a permanent target for energy storage. Here, six‐electron zinc–organic batteries are reported accessed by duodecuple H‐bonded NH 4 + storage N‐heterocyclic dipyrazino[2,3‐f:2′,3′‐h]quinoxaline‐2,3,6,7,10,11‐hexacarbonitrile (DQH) cathode. DQH features an extended π‐conjugated aromatic planarity enriched with super delocalization routes and dodecahedral‐active imine/cyano motifs, achieving high capacity up to 385 mAh g −1 at 0.5 A . Besides, cathode redox‐exclusively couples small‐hydration‐size low‐desolvation‐energy‐barrier ions (0.33 nm 0.19 eV vs 0.86 0.36 of Zn 2+ ) via flexible H‐bonding interactions. topo‐coordination enables anti‐dissolution aqueous electrolytes avoid common decay small molecules, solves the instability low interfacial reaction kinetics issues caused rigidly sluggishly repeated insertion ions. This gives battery high‐rate ability (30 lifespan 000 cycles 10 ).

Language: Английский

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Small-molecule organic electrode materials for rechargeable batteries

Science China Chemistry, Journal Year: 2023, Volume and Issue: 66(11), P. 3070 - 3104

Published: Aug. 25, 2023

Language: Английский

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Multiple Redox‐Active Cyano‐Substituted Organic Compound Integrated with MXene Nanosheets for High‐Performance Flexible Aqueous Zn‐Ion Battery

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(25)

Published: Feb. 4, 2024

Abstract An eco‐friendly organic compound, with rich redox sites, considered a promising cathode material for aqueous zinc‐ion batteries (AZIBs). Despite its potential, limited specific capacity and cycle instability impede practical application. Herein, an hexaazatriphenylene hexacarbonitrile (6CN‐HAT), is designed π – conjugated aromatic structure, integrated MXene nanosheets to construct flexible self‐supporting electrode (6CN‐HAT@MXene). Ex‐situ characterizations theoretical calculations verify that the charge storage mechanism predominantly involves coordination non‐coordination reactions between reactive C═N ─CN sites cations. The introduction of not only bolster stability electronic conductivity 6CN‐HAT@MXene but also expose additional active cation coordination. As in AZIBs, exhibits outstanding discharge 413 mAh g −1 at 0.05 A . Remarkably, even after 5000 cycles 5 , retained 91%. Furthermore, based on electrode, micro‐zinc‐ion high area 257.4 mF cm −2 prepared using laser cutting technology, highlighting potential future applications portable wearable devices.

Language: Английский

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