Energy storage materials, Год журнала: 2024, Номер unknown, С. 103984 - 103984
Опубликована: Дек. 1, 2024
Язык: Английский
Advanced Energy Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 9, 2025
Abstract Aqueous zinc‐ion batteries have garnered significant attention due to their abundant materials, low production costs, and safety. However, these suffer from severe side reactions, which are closely associated with the presence of a substantial amount solvent at electrode surfaces. Herein, 1,4,7,10,13,16‐hexaoxacyclooctadecane (18‐crown‐6) is added electrolyte illustrate both theoretically experimentally its contribution rapid desolvation aspect. It shown that addition 18‐crown‐6 greatly facilitates solvated structure prevents collection molecules on surface zinc anode, thus inhibiting hydrogen precipitation reaction. also enhances transference number ions, makes interfacial electric field anode stable promotes orderly diffusion uniform nucleation Zn 2+ , inhibits growth dendrites. As result, containing as additives shows cycle life, Zn||Zn symmetric cell cycled for nearly 1700 h 1 mA cm −2 showing improvement in Coulombic efficiency. The assembled Zn||NH 4 V O 10 exhibits excellent electrochemical performance, reaching capacity 100.9 mAh g −1 even after 4000 cycles 10.0 A .
Язык: Английский
Процитировано
6
Journal of the American Chemical Society, Год журнала: 2025, Номер unknown
Опубликована: Фев. 17, 2025
The integration of water-based electrolytes into zinc-ion batteries encounters challenges due to the limited voltage window water, interfacial side reactions mobile counterions, and growth zinc metal (Zn0) dendrites during charge. In this study, we introduce a nonfluorinated, cation-conducting polyelectrolyte membrane (PEM) designed alleviate these by suppressing reactivities both water counterions. This PEM forms hydrogen bonds with molecules through its proton-accepting chains, thus shifting lowest unoccupied molecular orbital (LUMO) energy from −0.37 −0.14 eV inducing negative shift in onset potential for evolution 110 mV. Additionally, it immobilizes counteranions onto polymer backbones via covalent bonding, hence making Zn2+ transference number nearly unity (0.96). Meanwhile, high modulus establishes solid-state diffusion barrier homogenize flux, leading 3D in-plane compact Zn0 plating within (002) plane. Atomic resolution scanning transmission electron microscopy (STEM) reveals corrosion-free deposition without electrolyte degradation, while operando transition X-ray (TXM) further illustrates real-time dendrite-free process at 5 mA/cm2. Consequently, unique properties water-binding anion-tethering enable enhanced electrochemical performance employing highly fluorinated expensive anions. demonstrates durability 3800 h Zn0–Zn0 symmetric cells lifetime 6000 cycles Zn0–LiV3O8 full cells.
Язык: Английский
Процитировано
2
Journal of the American Chemical Society, Год журнала: 2025, Номер unknown
Опубликована: Фев. 14, 2025
Prussian blue analogues (PBAs) are promising cathode candidates for aqueous Na ion batteries (ANIBs) considering their low-carbon and cost-effective features. However, it is still a huge challenge to achieve desirable energy density coupled with long cycle life due inherent defects in PBAs the unstable solid-electrolyte interphase (SEI) layer. Herein, we design Na2C4O4 additives as sodium supplements compensate PBAs, while utilizing CO2 products decomposed from construct robust SEI layer containing Na2CO3 species. As proof of concept, our building full ANIBs using iron-based NaTi2(PO4)3 anode an appropriate amount enable reversible capacity ∼144 mA h g-1 at 0.2 C excellent cycling stability 15,000 cycles 85% retention 10 C. The proposed concept further extended manganese-based PBA deliver 92 W kg-1 improved stability.
Язык: Английский
Процитировано
1
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 16, 2025
Abstract The practical development of aqueous zinc‐iodine (Zn‐I 2 ) batteries is greatly hindered by the low energy density resulting from conventional I 0 /I − conversion and limited temperature tolerance. Here, a temperature‐insensitive polycationic hydrogel electrolyte borax‐bacterial cellulose / p (AM‐ co ‐VBIMBr) (denoted as BAVBr) for achieving an energy‐dense cascade Zn‐I battery over wide range −50 to 50 °C designed. A comprehensive investigation, combining advanced spectroscopic investigation DFT calculations, has revealed that presence Br species in gel facilitates reaction /Br . Simultaneously, it activates high voltage + redox through interhalogen formation. Consequently, sequential highly reversible reactions involving , are achieved with assistance −NR 3 units BAVBr, effectively suppressing hydrolysis electrolyte. lead area capacity 0.76 mAh cm −2 at loading 1 mg or 760 g −1 based on mass iodine, demonstrating exceptional long‐term cycling stability °C. This study offers valuable insights into rational design electrolytes high‐energy batteries, specifically tailored wide‐temperature operation.
Язык: Английский
Процитировано
1
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 10, 2025
Abstract Aqueous zinc (Zn) batteries hold significant promise as large‐scale energy storage solutions aimed at mitigating the intermittency of renewable energy. Nevertheless, Zn anode is plagued by a series adverse reactions, hindering development toward practical applications. Herein, concept polyetheramine nematic spatial effects that reshape inner and outer Helmholtz planes to stabilize introduced. Theoretical calculations characterizations confirm reshaped exhibit water/suflate‐repulsive homogeneous 2+ transport interface, enabling highly stable for energetic batteries. Consequently, anode‐free half‐cells under achieve cycling over 390 h an areal capacity 50 mAh cm −2 1500 10 . The constructed Zn‐V 2 O 5 Zn‐MnO cycle performance 1000 2000 cycles, respectively. Importantly, enlarged pouch cell with 300 demonstrates specific 176 g −1 after cycles. Moreover, displays successful integration photovoltaic panels along notable safety features. This superior electrical double‐layer regulation strategy offers valuable insights into
Язык: Английский
Процитировано
1
ACS Nano, Год журнала: 2025, Номер unknown
Опубликована: Март 12, 2025
Zinc-ion batteries become a major research focus in energy storage, valued for their low cost and high safety. However, widespread application is hindered by poor zinc anode stability caused dendrites, side reactions, performance across wide temperature range at strong hydrogen bond network aqueous electrolyte. In this study, we propose strategy the synergistic combination of polyacrylamide hydrogel with sucrose. The experimental theoretical results demonstrate that through effect sucrose, they regulate solvation structure Zn2+ inhibit interfacial reactions active water. Zinc corrosion dendrite growth issues were also effectively mitigated effect. Consequently, Zn//Zn-symmetric battery achieved stable cycling exceeding 6240 h room 0.5 mA cm–2 mAh cm–2. Zn//VO2 full has good stability, maintaining cycle even temperatures (10,000 cycles 1 A g–1 0 °C). Even −10 °C, it (Zn//Zn-symmetric more than 3970 h). This work provides an alternative developing low-cost, electrolytes zinc-ion batteries.
Язык: Английский
Процитировано
1
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Апрель 30, 2025
Abstract Regulating the surface electronic structure is crucial for directional design of efficient energy storage materials. However, mechanisms by which alterations in spin microenvironment enhance intrinsic activity remain elusive. In this study, a localized high‐spin environment successfully constructed modifying NH 2 ‐UiO‐66 derivatives with configuration palladium (Pd) nanoparticles. By integrating density functional theory calculations, situ spectroscopy, and multiscale kinetic analysis, it revealed that introduction state Pd creates Lewis acidic on electrode surface, significantly enhances adsorption capacity reactivity electron‐rich intermediates. Moreover, polarization effect increases delocalization d electrons introduces new states near Fermi level, thereby markedly accelerating kinetics electrochemical reactions. Benefiting from mechanism, electrodes exhibit exceptional performance, high specific capacitance 773.3 F g −1 at 1 A . This study offers novel theoretical insights technical pathways fabrication highly active electrodes.
Язык: Английский
Процитировано
1
Angewandte Chemie, Год журнала: 2024, Номер unknown
Опубликована: Окт. 19, 2024
Abstract In addressing challenges such as side reaction and dendrite formation, electrolyte modification with bio‐molecule sugar species has emerged a promising avenue for Zn anode stabilization. Nevertheless, considering the structural variability of sugar, comprehensive screening strategy is meaningful yet remains elusive. Herein, we report usage additives representative bio‐molecules to develop descriptor based on modulation hydrogen bond component electron transfer kinetics. It found that xylo‐oligosaccharide (Xos) highest H‐bond acceptor ratio enables efficient water binding, affording stable Zn/electrolyte interphase alleviate evolution. Meanwhile, sluggish reduction originated from steric hindrance Xos contributes optimized deposition. With selected additive in hand, Zn||ZnVO full cells demonstrate durable operation. This study anticipated provide rational guidance selection aqueous batteries.
Язык: Английский
Процитировано
3
Journal of Energy Chemistry, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 1, 2024
Язык: Английский
Процитировано
3
Nano Letters, Год журнала: 2025, Номер unknown
Опубликована: Янв. 6, 2025
Aqueous zinc metal batteries (AZMBs) are an energy storage system that is expected to replace traditional lithium batteries. However, the practical application of AZMBs hampered by some inherent drawbacks. Herein, amino acid additive with a screening property introduced. The additives effectively erode Zn(002) binding specific crystallographic plane, achieving ordered layered three-dimensional structure anode, and shielding effect can inhibit activated H2O induce uniform Zn deposition. Accordingly, stable long-term cycling for 3750 h at 1 mA cm–2 ultrahigh Coulombic efficiency (99.7%) obtained. cell also achieves life nearly 1000 h, even 10 (cumulative capacity over 5 Ah cm–2). Moreover, retention 80% after cycles superior rate exhibited Zn//V2O5 cells. work provides theoretical support highly reversible anode.
Язык: Английский
Процитировано
0