Designing a solubility-limited small organic molecule for aqueous zinc-organic batteries

Energy storage materials, Journal Year: 2023, Volume and Issue: 59, P. 102778 - 102778

Published: April 15, 2023

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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Advances in aqueous zinc-ion battery systems: Cathode materials and chemistry

Progress in Materials Science, Journal Year: 2024, Volume and Issue: unknown, P. 101393 - 101393

Published: Oct. 1, 2024

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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Bifunctional Potential Structure Design Breaks Electrolyte Limitations of Zinc Ion Battery

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(18)

Published: Feb. 22, 2024

Aqueous zinc-ion batteries (ZIBs) are safe and economical for grid applications. However, current ZIBs have limitations in terms of inferior capacity low output voltage, which hampered by the electrolyte applicability Zn

Language: Английский

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Carbonyl-enriched sulfide linked conjugated polymer as a cathode for aqueous zinc ion batteries

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 112, P. 115512 - 115512

Published: Jan. 23, 2025

Language: Английский

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合理设计多电子转移机制实现更好的水系锌-有机电池

Science China Materials, Journal Year: 2024, Volume and Issue: 67(5), P. 1367 - 1378

Published: Feb. 20, 2024

Language: Английский

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Aqueous Zn−organic batteries: Electrochemistry and design strategies

Battery energy, Journal Year: 2023, Volume and Issue: 2(6)

Published: Oct. 13, 2023

Abstract Organic electroactive materials are increasingly recognized as promising cathode for aqueous zinc–ion batteries (AZIBs), owing to their structural diversity and renewable nature. Despite this, the electrochemistry of these organic cathodes in AZIBs is still less than optimal, particularly aspects such output voltage, cyclability, rate performance. In this review, we provide an overview evolutionary history elucidate charge‐storage mechanisms. We then delve into strategies overcome prevailing challenges faced by Zn−organic batteries, including low achievable capacity poor cycling stability, Design enhance cell performance include tailoring molecular structure, engineering electrode microstructure, modulation electrolyte composition. Finally, highlight that future research directions should cover evaluation under practical conditions recycling reuse materials.

Language: Английский

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An engineered electrode of phenazine with suitable binder and carbon to exhibit excellent energy and power density in an aqueous organic zinc ion battery

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 597, P. 234153 - 234153

Published: Feb. 8, 2024

Language: Английский

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All-in-one integrated electrodes based on polyaniline for high-performance aqueous zinc-ion batteries with substantial areal capacities

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 84, P. 110975 - 110975

Published: Feb. 20, 2024

Language: Английский

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