Sodiophilic Host with 85% Depth-of-discharge Reversibility towards Robust Anode-Free Na Metal Batteries

Nano Energy, Год журнала: 2025, Номер unknown, С. 110780 - 110780

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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Weakly anion-driven solvation towards stable operation of carbonate ester-based sodium metal batteries at − 40°C

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162150 - 162150

Опубликована: Март 1, 2025

Язык: Английский

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Insights into Dendrite Regulation by Polymer Hydrogels for Aqueous Batteries

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Aqueous batteries, renowned for their high capacity, safety, and low cost, have emerged as promising candidates next-generation, sustainable energy storage. However, large-scale application is hindered by challenges, such dendrite formation side reactions at the anode. Hydrogel electrolytes, which integrate advantages of liquid solid phases, exhibit superior ionic conductivity interfacial compatibility, giving them potential to suppress evolution. This Perspective first briefly introduces fundamentals underlying unique features hydrogels. It then identifies key role water polymer networks in inhibiting formation, highlighting regulation activity, ion transport, electrode kinetics. By elucidating principles hydrogels suppression, this work aims provide valuable insights advance implementation aqueous batteries incorporating

Язык: Английский

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Diatomite‐Based Hybrid Electrolyte for Improving Reversibility of Cathode/Anode Interface Reaction in Zn‐MnO₂ Batteries

Small Methods, Год журнала: 2025, Номер unknown

Опубликована: Янв. 23, 2025

Abstract The cyclic stability of aqueous zinc‐manganese batteries (ZMBs) is greatly restricted by the side reaction anode and irreversibility cathode. In this work, a solid‐liquid hybrid electrolyte mixing traditional ZnSO 4 ‐based diatomite (denoted as Dtm) proposed that exhibits good compatibility reversibility in both interface cathode interface. abundant hydroxyl groups at disturb hydrogen bond network water molecule, which weakens corrosion active to Zn anode. Moreover, negatively charged surface able regulate electric field promote uniform deposition ion well inhibit formation sulfate (ZHS) As result, Zn||Zn symmetric battery with Dtm achieves stable cycling for 2500 h 1 mA cm −2 /1 mAh , while Zn||MnO 2 can achieve cycle time 500 cycles current densities 0.2 0.5 A g −1 capacities 228 177.6 respectively. provides new ideas screening high‐performance ZMBs.

Язык: Английский

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High‐Entropy Configuration Regulating Interlayer Oxygen Charge Toward High‐Voltage and Air‐Stability Layered Cathode in High‐Loading Sodium Ion Full Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Abstract Revealing interlayer oxygen charge is of great significance in understanding the high‐voltage and air stability sodium layered cathodes, but it currently lacks attention. Particularly, ion full batteries under high cathode loading (≥8 mg cm −2 ) also faces extremely challenges. Here, its mechanism for are revealed a high‐entropy O3‐Na 0.85 Li 0.1 Al 0.02 Sn 0.08 Cu Ti Ni 0.3 Mn O 2 (HEO) cathode, which enables robust high‐cathode‐loading sodium‐ion batteries. The doping effectively maintains transition metal (TM)─O bond covalency, stabilizing charge. stable O─O repulsion avoids structural collapse, realizing P3‐OP2‐P3 reversible phase transition. Moreover, reduced achieves Na layer contraction Na─O enhancement. These features inhibit attack water loss, well stability. Therefore, HEO exhibits good up to 900 cycles 2.0‒4.3 V high‐capacity retention 96.12% after 5 day exposure. pouch cell with ≈16 ≈60 mAh lasts 100 cycles. This work contributes new insights into both cathodes practical

Язык: Английский

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Tailoring Solvation Sheath and Desolvation Processes of Weakly Solvated Zn2+ through Heterointerfaces Built-in Electric Field Effects for Ultra-stable Aqueous Zinc Batteries

Advanced Powder Materials, Год журнала: 2025, Номер unknown, С. 100282 - 100282

Опубликована: Март 1, 2025

Язык: Английский

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Unidirectional Ion Sieve Enabling High-Flux and Reversible Zinc Anodes

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Апрель 8, 2025

The longevity of aqueous batteries after scaling up is largely restricted by metal anodes (Zn, Al, and Mg). Parasitic reactions uncontrolled dendrites dominate failure modes, especially at high current densities. To fully improve its reversibility, tailored surface chemistry well-designed ion transport channels are simultaneously demanded. Here, inspired the reticulated structure sea urchin shell, an aligned porous coating assembled from graphene oxide sodium alginate anchored on zinc anodes, termed a unidirectional sieve. As revealed multiscale modeling tests, this biomimetic layer produces area, creating low-tortuosity that greatly enhance kinetics uniform distribution ions. introduction ion-conductive natural polymer enables well-tuned hydration selectivity, alleviating side reactions. With structural-functional integrity design, decorated symmetrical cell presents reversible cycling for 1600 h, with reduced nucleation potential 21 mV Coulombic efficiency. Aided Distribution Relaxation Time tool, different electrochemical processes deconvoluted to understand respective mechanisms, thereby providing referable strategy product scaling. In end, 7Ah Zn||VO2 pouch demonstrates stable over 500 cycles 1 A·g-1, capacity retention 90%.

Язык: Английский

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Customizing Helmholtz Plane with N, F, P Tri‐Doped rGO/CNT Aerogel Protective Layer for Long‐Life Zinc‐Ion Batteries

Small Methods, Год журнала: 2025, Номер unknown

Опубликована: Апрель 10, 2025

Abstract The practical application of aqueous zinc‐ion batteries (AZIBs) is impeded by dendrite formation and water‐induced parasitic reactions at the anodes. In this article, a relatively hydrophobic inner Helmholtz plane (IHP) an outer (OHP) with abundant nucleation sites are engineered through coating N, F, P heteroatom doped reduced graphene oxide/carbon nanotube (NFP‐rGO‐CNT) multifunctional aerogel protective layer. rGO certain hydrophobicity construct lean‐water environment IHP, effectively blocking adverse between water metallic Zn, while zincophilic uniformly distributed heteroatoms facilitate Zn 2+ migration homogenize flux OHP, thereby promoting directional deposition along (002) crystal plane. Consequently, fabricated NFP‐rGO‐CNT/Zn//Cu asymmetric cell exhibits high Coulombic efficiency close to 100% for 3200 cycles. addition, symmetric assembled NFP‐rGO‐CNT/Zn electrodes presents impressive lifespan 1990 h 5 mA cm −2 2 mAh , significantly outperforming control group (about 27 h). More remarkably, NFP‐rGO‐CNT/Zn//V O 3 pseudo‐pouch capable powering small fan rotate steadily. This layer strategy offers novel perspective HP regulation, enabling textured reversible

Язык: Английский

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Restricted side reactions induced by water molecules via inorganic mineral electrolyte fillers for highly-stable Zn-MnO2 batteries

Journal of Power Sources, Год журнала: 2025, Номер 647, С. 237307 - 237307

Опубликована: Май 14, 2025

Язык: Английский

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