A π-conjugated organic compound with multiple active sites as a cathode material for high-rate aqueous zinc-ion batteries

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 78, P. 110326 - 110326

Published: Jan. 6, 2024

Language: Английский

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A solubility limited pyrene-4,5,9,10-tetraone-based covalent organic framework for high-performance aqueous zinc-organic batteries

Nano Research, Journal Year: 2024, Volume and Issue: 17(6), P. 5095 - 5103

Published: Jan. 15, 2024

Language: Английский

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Ultrahigh Pyridinic/Pyrrolic N Enabling N/S Co‐Doped Holey Graphene with Accelerated Kinetics for Alkali‐Ion Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 3, 2024

Abstract Carbonaceous materials hold great promise for K‐ion batteries due to their low cost, adjustable interlayer spacing, and high electronic conductivity. Nevertheless, the narrow spacing significantly restricts potassium storage ability. Herein, hierarchical N, S co‐doped exfoliated holey graphene (NSEHG) with ultrahigh pyridinic/pyrrolic N (90.6 at.%) large (0.423 nm) is prepared through micro‐explosion assisted thermal exfoliation of oxide (GO). The underlying mechanism micro‐explosive GO revealed. NSEHG electrode delivers a remarkable reversible capacity (621 mAh g −1 at 0.05 A ), outstanding rate capability (155 10 robust cyclic stability (0.005% decay per cycle after 4400 cycles 5 exceeding most previously reported anodes in batteries. In addition, exhibits encouraging performances as Li‐/Na‐ion Furthermore, assembled activated carbon||NSEHG potassium‐ion hybrid capacitor can deliver an impressive energy density 141 Wh kg stable cycling performance 96.1% capacitance retention 4000 1 . This work offer helpful fundamental insights into design scalable fabrication high‐performance alkali metal ion

Language: Английский

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Engineering surface oxygen functionalities on reduced graphene oxide cathode for high performance flexible zinc-ion hybrid capacitor

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 109, P. 115134 - 115134

Published: Jan. 5, 2025

Language: Английский

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An anthraquinone-based covalent organic framework for highly reversible aqueous zinc-ion battery cathodes

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(47), P. 26221 - 26229

Published: Jan. 1, 2023

TfDa-COF and TpDa-COF were used for ZIB cathodes to investigate the essential relationship between active group electrochemical properties. The dominance of anthraquinone groups coordination Zn 2+ was showed by comparing CV curves.

Language: Английский

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Modified vanadium oxide with enhanced diffusion kinetic for high rate aqueous zinc-ion batteries

Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 73, P. 109236 - 109236

Published: Oct. 11, 2023

Language: Английский

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Fused Functional Organic Material with the Alternating Conjugation of Quinone–Pyrazine as Cathode for Aqueous Zinc Ion Batteries

Small Methods, Journal Year: 2024, Volume and Issue: 8(7)

Published: Jan. 7, 2024

Abstract Organic cathode materials for aqueous rechargeable zinc batteries (ARZBs) are rapidly gaining prominence, while the exploration of compounds with affordable synthesis, satisfactory electrochemical performance, and understandable mechanisms still remains challenging. In this study, 6,8,15,17‐tetraaza‐heptacene‐5,7,9,14,16,18‐hexaone (TAHQ) as an easily synthesized organic material novel quinone/pyrazine alternately conjugated molecule structure is presented. This electrode exhibits good capacity highly reversible redox reactions, influence multi‐active structures on Zn 2+ /H + loading behavior systematically investigated by ex situ spectroscopy, tests, computation. Both experimental theoretical studies effectively address intercalation/deintercalation kinetics. Benefitting from fused active functionalities, assembled Zn//TAHQ battery displays a maximum discharge specific 254.3 mAh g −1 at 0.5 A , it maintains remarkable cycle performance 71% retention after 1000 cycles under 5 .

Language: Английский

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Recent Advances on Stretchable Aqueous Zinc‐Ion Batteries for Wearable Electronics

Small, Journal Year: 2024, Volume and Issue: 20(12)

Published: Feb. 9, 2024

Abstract The rapid development of wearable electronics has stimulated the pursuit advanced stretchable power sources. As a promising candidate, aqueous zinc‐ion batteries (AZIBs), have attracted unprecedented attention owing to their intrinsic safety, low cost, environmental benignity, and high performance, can be endowed with additional functionalities broaden applications electronics. Here, comprehensive review on latest advances AZIBs is presented. materials methods for components in are first summarized, covering current collectors, electrodes, electrolytes/separators, encapsulating layers. Subsequently, benefits coplanar, fiber‐shaped, sandwiched configurations analyzed. Moreover, features integrated into highlighted. Finally, challenges prospects future proposed.

Language: Английский

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A Small‐Molecule Organic Cathode with Extended Conjugation toward Enhancing Na⁺ Migration Kinetics for Advanced Sodium‐Ion Batteries

Small, Journal Year: 2024, Volume and Issue: 20(34)

Published: April 15, 2024

Abstract Organic cathode materials show excellent prospects for sodium‐ion batteries (SIBs) owing to their high theoretical capacity. However, the solubility and low electrical conductivity of organic compounds result in inferior cycle stability rate performance. Herein, an extended conjugated small molecule is reported that combines electroactive quinone with piperazine by structural designability materials, 2,3,7,8‐tetraamino‐5,10‐dihydrophenazine‐1,4,6,9‐tetraone (TDT). Through intermolecular condensation reaction, many redox‐active groups C═O structures are introduced without sacrificing specific capacity, which ensures capacity electrode enhances The abundant NH 2 can form hydrogen bonds enhance interactions, resulting lower higher stability. TDT delivers a initial 293 mAh g −1 at 500 mA maintains 90 extremely current density 70 A . || Na‐intercalated hard carbon (Na‐HC) full cells provide average 210 during 100 cycles deliver 120 8

Language: Английский

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Molecule and Microstructure Modulations of Cyano‐Containing Electrodes for High‐Performance Fully Organic Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(19)

Published: March 16, 2024

Abstract Cyano‐containing electrodes usually promise high theoretical potentials while suffering from uncontrollable self‐dissolution and sluggish reaction kinetics. Herein, to remedy their limitations, an unprecedented core–shell heterostructured electrode of carbon nanotubes encapsulated in poly(1,4‐dicyanoperfluorobenzene sulfide) (CNT@PFDCB) is rationally crafted via molecule microstructure modulations. Specifically, the linkage sulfide bridges PFDCB prevents active cyano groups dissolving, resulting a robust structure. The fluorinations modulate electronic configurations frontier orbitals, allowing higher electrical conductivity elevated output voltage. Combined with architecture unlock diffusion kinetics for both electrons guest ions, CNT@PFDCB exhibits impressive capacity (203.5 mAh g −1 ), remarkable rate ability (127.6 at 3.0 A exceptional cycling stability (retaining 81.1 % after 3000 cycles 1.0 ). Additionally, Li‐storage mechanisms regarding are thoroughly revealed by situ attenuated total reflection infrared spectroscopy, Raman simulations, which involve coordination interaction between Li ions electron delocalization along conjugated skeleton. More importantly, practical fully organic cell based on well‐validated that demonstrates tremendous potential cyanopolymer as cathode replace its inorganic counterparts.

Language: Английский

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