Deep ion mass transfer addressing the capacity shrink challenge of aqueous Zn||MnO2 batteries during the cathode scaleup

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(22), P. 8904 - 8914

Published: Jan. 1, 2024

This work shows that the introduction of interstitial carbon into MnO 2 lattice could reduce affinity toward SO 4 2− and OH − , thus suppressing surface coverage ZHS improving Zn||MnO battery performance under large loading mass.

Language: Английский

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Advancements in Layered Cathode Materials for Next-Generation Aqueous Zinc-Ion Batteries: A Comprehensive Review

Energy storage materials, Journal Year: 2024, Volume and Issue: 72, P. 103736 - 103736

Published: Aug. 23, 2024

Language: Английский

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Construction of Stable Zn Metal Anode by Inorganic Functional Protective Layer Toward Long-Life Aqueous Zn-Ion Battery

Energy storage materials, Journal Year: 2024, Volume and Issue: 71, P. 103628 - 103628

Published: July 8, 2024

Language: Английский

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Dual Anions Doping Enhanced Conductivity and Stability of Layered δ‐MnO₂ Cathode for Aqueous Zinc‐Ion Battery

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 19, 2025

Abstract Manganese‐based oxides have been identified as promising cathodes for aqueous zinc‐ion batteries (AZIBs) due to their high theoretical energy density and cost‐effectiveness. However, low electronic conductivity tendency dissolve during cycling limited applications in AZIBs. Herein, a one‐step calcination method is proposed incorporate sulfur nitrogen anions into the MnO 2 structure (referred NS‐MnO ). Characterizations calculations confirm that dopants improve intrinsic structural stability of . Specifically, doping accelerates diffusion Zn 2+ , while formation Mn─N bonds strengthens Mn─O bonds, thereby stabilizing cycling. In addition, process creates oxygen vacancies facilitate kinetics. As result, demonstrates specific capacity 295 mAh g ‒1 at current 0.2 A exhibits 120 1 over 1500 cycles. This study highlights effectiveness dual modifying transition metal suggests its potential application designing other materials storage.

Language: Английский

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Anion Vacancies Coupling with Heterostructures Enable Advanced Aerogel Cathode for Ultrafast Aqueous Zinc‐Ion Storage

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Abstract As a potential cathode material, manganese‐based sulfide has recently attracted increasing interest due to its many advantages in aqueous zinc‐ion storage. Unfortunately, some challenges such as sluggish kinetics, unstable structure, and controversial phase transition mechanism during the energy storage process hinder practical application. Herein, inspired by density functional theory (DFT) calculations, novel 3D sulfur vacancy‐rich heterostructured MnS/MXene aerogel is designed, used for Zn‐ion batteries/hybrid capacitors (ZIBs/ZICs) first time. Thanks synergistic modification strategy of vacancies heterostructures, as‐constructed MnS/MXene//Zn ZIBs exhibit significantly enhanced electrochemical properties, especially outstanding rate capability cyclic stability. More encouragingly, as‐assembled MnS/MXene//porous carbon (PC) ZICs an ultrahigh density, high power splendid cycling lifespan. Most notably, systematic kinetic analyses, ex situ characterizations, DFT calculations illustrate that irreversibly converts into MnO x @ZnMnO 3 /MXene, then undergoes reversible conversion from /MXene MnOOH@ZnMn 2 O 4 accompanied co‐insertion/extraction H + Zn 2+ . The heterostructures thorough mechanistic study proposed this work offer valuable guidance designing exploiting high‐performance cathodes zinc‐based devices.

Language: Английский

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Unraveling the Anionic Redox Chemistry in Aqueous Zinc‐MnO2 Batteries

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(47)

Published: Aug. 12, 2024

Abstract Activating anionic redox reaction (ARR) has attracted a great interest in Li/Na‐ion batteries owing to the fascinating extra‐capacity at high operating voltages. However, ARR rarely been reported aqueous zinc‐ion (AZIBs) and its possibility popular MnO 2 ‐based cathodes not explored. Herein, novel manganese deficient micro‐nano spheres with interlayer “Ca 2+ ‐pillars” (CaMnO‐140) are prepared via low‐temperature (140 °C) hydrothermal method, where Mn vacancies can trigger by creating non‐bonding O 2p states, pre‐intercalated Ca reinforce layered structure suppress lattice oxygen release forming Ca−O configurations. The tailored CaMnO‐140 cathode demonstrates an unprecedentedly rate capability (485.4 mAh g −1 0.1 A 154.5 10 ) marvelous long‐term cycling durability (90.6 % capacity retention over 5000 cycles) AZIBs. reversible chemistry accompanied CF 3 SO − (from electrolyte) uptake/release, H + /Zn co‐insertion/extraction, elucidated advanced synchrotron characterizations theoretical computations. Finally, pouch‐type CaMnO‐140//Zn manifest bright application prospects energy, long life, wide‐temperature adaptability, safety. This study provides new perspectives for developing high‐energy AZIBs initiating chemistry.

Language: Английский

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Layered Iron Vanadate for High‐Performance and Stable Cathode Material for Aqueous Manganese Batteries

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract Aqueous rechargeable metal batteries have gained significant attention because of the low cost, high capacity, and inherent safety offered by nonflammable water‐based electrolytes. Among these, Mn‐based systems are promising owing to their intrinsic stability, abundance, affordability, energy density. Despite these advantages, development suitable host structures for Mn storage remains underexplored. This study introduces layered iron vanadate, FeV 3 O 9 ·1.1H 2 O, as a new cathode material aqueous batteries, demonstrating exceptional performance. The exhibits reversible capacity 306.9 mAh g −1 at 0.25 A an excellent rate performance 210.6 . In addition, outstanding cycling retaining 73.4% its initial after 3000 cycles − ¹, which is attributed volume expansion. underlying reaction mechanism elucidated through spectroscopic microscopic analyses. When integrated into final cell, system demonstrates superior compared Zn underscoring potential next‐generation battery systems. These findings advance technology, paving way safer, more cost‐effective, high‐performance solutions.

Language: Английский

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Ladder‐Type Redox‐Active Polymer Achieves Ultra‐stable and Fast Proton Storage in Aqueous Proton Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(44)

Published: July 31, 2024

Abstract A ladder‐type rigid‐coplanar polymer with highly ordered molecular arrangement has been designed via a covalent cycloconjugation conformational strategy. Benefitting from the extended π‐electron delocalization in aromatic polymeric backbone, prepared exhibits fast intra‐chain charge transport along chain, realizing extraordinary proton‐storage capability aqueous proton batteries.Affordable and safe batteries (APBs) unique “Grotthuss mechanism,” are very significant for advancing carbon neutrality initiatives. While organic polymers offer robust adaptable framework that is well‐suited APB electrodes, limited redox capacity constrained their broader application. Herein, (PNMZ) strategy optimized electronic structure within high‐aromaticity skeleton. As result, exceptional kinetics, which evidenced by in‐operando monitoring techniques theoretical calculations. It achieves remarkable of 189 mAh g −1 at 2 excellent long‐term cycling stability, approximately 97.8 % retention over 10,000 cycles. Finally, high‐performance all‐polymer device successfully constructed desirable 99.7 after 6,000 cycles high energy density 56.3 Wh kg .

Language: Английский

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Functionalized Modification of Conjugated Porous Polymers for Full Reaction Photosynthesis of H₂O₂

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

Published: Oct. 16, 2024

Abstract Modulating the molecular structure to achieve full reaction including oxygen reduction and water oxidation is a promising strategy for efficient photosynthesis of hydrogen peroxide (H 2 O ) but remains challenge. Herein, triphenylamine naphthalimide‐based conjugated porous polymers are synthesized with photo oxidation‐reduction structures, then sulfonate (─SO 3 H) quaternary ammonium groups introduced via post‐modification produce two photocatalysts named NI‐TPA‐NI‐SO H NI‐TPA‐NI‐N, respectively. Introducing charged functional has improved hydrophilicity (O adsorption, beyond that, ─SO further stabilizes adsorbed bonding as well accelerates photogenerated carrier separation electron/proton transport that enables . Therefore, motivated by charge separation, stabilized boosted proton‐coupled electron transfer, exhibits highest light‐driven production rate among three photocatalysts, reaching 3.40 mmol g −1 h , which 4.9‐fold NI‐TPA‐NI. Remarkably, in presence ethylenediaminetetraacetic acid disodium salt, its significantly enhances 14.5 superior most reported organic best knowledge.

Language: Английский

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Proton Storage Chemistry in Aqueous Zinc‐Inorganic Batteries with Moderate Electrolytes

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

Published: Dec. 11, 2024

The proton (H

Language: Английский

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