Enhanced Li-ion battery performance based on multisite oxygen vacancies in WO3-x@rGO negative electrode

Chemical Engineering Journal, Год журнала: 2024, Номер 498, С. 155383 - 155383

Опубликована: Авг. 30, 2024

Язык: Английский

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Polyetheramine Nematic Spatial Effects Reshape the Inner/Outer Helmholtz Planes for Energetic Zinc Batteries

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

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Ion-dipole interaction manipulated bilateral interface chemistry for deep rechargeability and high redox activity of Zn-organic batteries

Chem, Год журнала: 2025, Номер unknown, С. 102411 - 102411

Опубликована: Фев. 1, 2025

Язык: Английский

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Surface Tension‐Derived Electrical Double Layer Modification Enables Practical Zinc‐Ion Pouch Cells

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 2, 2025

Abstract Interface issues such as parasitic reactions and dendrite growth have long been major obstacles hindering the longevity of aqueous zinc‐ion batteries (AZIBs). The quest for more effective strategies to regulate highly active interface remains a focal point in AZIBs. Herein, novel interface‐targeted additive N‐Acetoacetylmorpholine (NHM) is introduced, by lowering interfacial tension modifying electrical double layer, improve performance This reconfiguration results H 2 O‐poor inner Helmholtz plane, which suppresses reactions, accelerates kinetics, fosters uniform zinc deposition. Consequently, anode demonstrates impressive cycling durability, exceeding 3800 h plating/stripping process 400 steady cycle at high depth discharge (DOD) 60%. Zn/NH 4 V O 10 full cell superior performance, achieving 80% capacity retention after 1500 cycles. Moreover, pouch cells with highloading cathodes (13.5 mg cm −2 ) can maintain 70% 300 cycles 0.5 A g −1 . controlled N/P ratio (2.63:1) shows excellent stability 130 These findings provide valuable insights into design offer promising enhancing practicality

Язык: Английский

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Active Water Optimization in Different Electrolyte Systems for Stable Zinc Anodes

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 31, 2025

Zinc (Zn) metal, with abundant resources, intrinsic safety, and environmental benignity, presents an attractive prospect as a novel electrode material. However, many substantial challenges remain in realizing the widespread application of aqueous Zn-ion batteries (AZIBs) technologies. These encompass significant material corrosion (This can lead to battery failure unloaded state.), hydrogen evolution reactions, pronounced dendrite growth at anode interface, constrained electrochemical stability window. Consequently, these factors contribute diminished lifespan energy efficiency while restricting high-voltage performance. Although numerous reviews have addressed potential separator design mitigate issues some extent, inherent reactivity water remains fundamental source challenges, underscoring necessity for precise regulation active molecules within electrolyte. In this review, mechanism AZIBs (unloaded charge discharge state) is analyzed, optimization strategy working principle electrolyte are reviewed, aiming provide insights effectively controlling process reaction, further formation, expanding range stability. Furthermore, it outlines promote its practical future development pathways.

Язык: Английский

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Robust Znncn Protective Layer with High Zincphilicity and Ionic Conductivity for Ultra-Stable Zinc Metal Anodes

Опубликована: Янв. 1, 2025

Язык: Английский

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Lithium-plating suppressed graphite enables fast and low-temperature charging capability for safe lithium-ion pouch cell

Nano Energy, Год журнала: 2025, Номер unknown, С. 110769 - 110769

Опубликована: Фев. 1, 2025

Язык: Английский

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Innovative Design of a Double‐Layer Gradient Coating for Dendrite‐Free and Ultrastable Zinc Anodes

Small, Год журнала: 2025, Номер 21(11)

Опубликована: Фев. 14, 2025

Abstract The rampant “top‐growth” dendrites, hydrogen evolution reaction (HER), and zinc (Zn) self‐corrosion severely impede the further development of rechargeable aqueous ion batteries. To address these challenges, a novel double‐layer gradient coating consisting zincophilic Sn inner layer an organic polymer outer (OSA/PAM@Sn) is constructed on surface Zn anode. layer, composed cross‐linked oxidized sodium alginate polyacrylamide (OSA/PAM), not only serves as physical barrier to isolate active water but also accelerates 2+ diffusion by facilitating desolvation process [Zn(H 2 O) 6 ] due its plentiful polar functional groups, thereby effectively suppressing detrimental HER self‐corrosion. Simultaneously, loose can offer abundant nucleation sites induce uniform “bottom‐to‐top” deposition with low overpotential. Benefiting from synergistic effect designed coating, OSA/PAM@Sn‐Zn anode exhibits remarkable reversibility, lifespans over 5000 1200 h at 1 mA cm −2 –1 mAh 5 –5 in symmetric cells, respectively. Additionally, MnO ||OSA/PAM@Sn‐Zn full battery displays improved rate performance cycle stability. This work emphasizes importance effects interface design achieve side reaction‐free dendrite‐free anodes.

Язык: Английский

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Modulating the Hydrogen Bond for a Stable Zinc Anode with a Wide Temperature Range via the Sucrose and Polyacrylamide Synergistic Effect

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

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Interfacial Molecule Engineering Builds Tri‐Functional Bilayer Silane Films with Hydrophobic Ion Channels for Highly Stable Zn Metal Anode

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 24, 2025

Abstract The vulnerable Zn electrode interface with uncontrolled dendrite growth and severe parasitic side reactions constrains the practical application of aqueous zinc‐ion batteries (AZIBs). General engineering offers a promising approach to relieve these issues but is limited by confined functionality, low affinity, additional weight protective layer. In this study, bilayer silane film (SF) developed hydrophobic, ion‐buffering, strong interfacial adhesion properties through precise assembly coupling agents. well‐designed SF layer enables 2+ undergo continuous processes, including being captured –CF 3 groups, followed in sequence inducing desolvation, directed diffusing nanochannels, buffered diffusion. This multiple process contributed accelerated [Zn(H 2 O) 6 ] stabilized transport, inhibited reactions. Consequently, dendrite‐free highly reversible SF@Zn anodes are realized, exhibiting an ultra‐long lifetime (more than 4300 h), high Coulombic efficiency (CE) (99.1% after 2600 cycles), superior full cell capacity retention (83.2% 1000 cycles). innovative strategy provides novel method enhance anode stability via molecular‐level design multicomponent reaction, offering new insights into advanced for AZIBs.

Язык: Английский

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