Energy storage materials, Год журнала: 2025, Номер unknown, С. 104343 - 104343
Опубликована: Май 1, 2025
Язык: Английский
Energy & Environmental Science, Год журнала: 2024, Номер 17(22), С. 8904 - 8914
Опубликована: Янв. 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.
Язык: Английский
Процитировано
23
Energy storage materials, Год журнала: 2024, Номер 72, С. 103736 - 103736
Опубликована: Авг. 23, 2024
Язык: Английский
Процитировано
20
Energy storage materials, Год журнала: 2024, Номер 71, С. 103628 - 103628
Опубликована: Июль 8, 2024
Язык: Английский
Процитировано
19
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 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.
Язык: Английский
Процитировано
4
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 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.
Язык: Английский
Процитировано
4
Angewandte Chemie, Год журнала: 2024, Номер 136(47)
Опубликована: Авг. 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.
Язык: Английский
Процитировано
10
Advanced Science, Год журнала: 2025, Номер unknown
Опубликована: Апрель 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.
Язык: Английский
Процитировано
2
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(44)
Опубликована: Июль 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 .
Язык: Английский
Процитировано
9
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Окт. 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.
Язык: Английский
Процитировано
8
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Дек. 11, 2024
The proton (H
Язык: Английский
Процитировано
7