Self‐Healing Hybrid Interphase Layer Assisted by Liquid Gallium Metal Toward Exceptionally Reversible Sodium Metal Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 3, 2025

Abstract Sodium metal batteries (SMBs) have attracted considerable attention owing to their dazzling advantages. Nevertheless, the brittle natural SEI film and growth of dendrites posed a great threat practical application SMBs. Herein, an interphase layer (Ga/Na2Se) with self‐healing function assisted by liquid gallium is designed. By combining in situ characterizations theoretical analysis, operating mechanism comprehensively revealed. The formed Ga not only possesses function, thus repairing collapse interfacial texture upon cycling, but also has favorable Na+ diffusion barrier that endows disperse uniformly instead forming Na clusters on substrate, preventing uneven charge accumulation preferential nucleation. Meanwhile, Na2Se superionic conductor teases flux interlayer, efficiently avoiding formation dendrites. Consequently, symmetric cells achieve superior cycling lifespan 2200 h at 0.5 mA cm −2 /1.0 mAh . Most importantly, pouch full cell assembled using NaNi1/3Fe1/3Mn1/3O2 cathode exhibits overwhelming stability, delivering 75.9 g −1 after 5000 cycles 1.0 C. This work provides new insight into for exploitation

Язык: Английский

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Rechargeable magnesium batteries: Overcoming challenges for high-efficiency energy applications

Journal of Energy Storage, Год журнала: 2025, Номер 126, С. 117079 - 117079

Опубликована: Май 17, 2025

Язык: Английский

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Bifunctional Synergistic Mg@SnSb SEI for Low Interfacial Reaction Energy Barriers and Stable Cycling of High‐Performance Rechargeable Magnesium Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 17, 2025

Abstract The formation of a stable passivation layer and the strong electrostatic interactions impede diffusion magnesium ions (Mg 2+ ) at Mg anode surface. Construction an artificial solid electrolyte interphase (SEI) presents promising approach to overcome these limitations. This study develops synergistic structurally Mg@SnSb SEI through in situ reaction between Tin trifluoromethanesulfonate antimony chloride (Sn(OTf) 2 ‐SbCl 3 ‐based) electrolyte, featuring low LUMO (lowest unoccupied molecular orbital). formed multi‐phase effectively reduces interfacial barriers facilitates during both plating stripping processes. Additionally, nano‐grained microstructure enhances uniformity plating/stripping suppresses decomposition OTf anions DME solvent molecules. incorporating exhibits exceptionally overpotential less than 0.07 V ultra‐long cycle life exceeding 1500 h. In full‐cell tests using Mg@SnSb||Mo 6 S 8 , system achieved exceptional electrochemical performance, maintaining over 94% its initial capacity after more 400 cycles.

Язык: Английский

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Recent advancements in high-performance and durable electrodes materials for magnesium-ion batteries

Coordination Chemistry Reviews, Год журнала: 2025, Номер 538, С. 216702 - 216702

Опубликована: Апрель 21, 2025

Язык: Английский

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