Tailoring a High Loading Atomic Zinc with Weak Binding to Sodium Toward High‐Energy Sodium Metal Batteries

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 10, 2025

Abstract Single‐atom materials provide a platform to precisely regulate the electrochemical redox behavior of electrode with atomic level. Here, multifield‐regulated sintering route is reported rapidly prepare single‐atom zinc very high loading mass 24.7 wt.% by significantly improved diffusion kinetics and stronger charge transfer between nitrogen atoms. X‐ray absorption near edge structure (XANES) spectra for Zn K‐edges during discharge process verify stable reversible slight reduction oxidation sites, which much different from previous report alloying reaction process. This result suggests acts as an active sites through weak binding sodium Na ion fluxes. Finally, Cu foil coated ≈2 µm layer such material exhibits Coulombic efficiency ≈99.99% up 1700 cycles at 1 mA h cm −2 . An ultra‐low overpotential 3 mV unprecedented life span over 3200 in symmetrical cell achieved. Due thin coating layer, anode‐free battery fabricated V 2 (PO 4 ) cathode displays prominent energy density 320 Wh Kg −1 , demonstrating strong potential practical application.

Язык: Английский

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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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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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Porous Organic Framework-Based Materials (MOFs, COFs and HOFs) for Lithium-/Sodium-/Potassium-/Zinc-/Aluminum-/Calcium-Ion Batteries: A Review

Electrochemical Energy Reviews, Год журнала: 2025, Номер 8(1)

Опубликована: Фев. 17, 2025

Язык: Английский

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3D Printed Sodiophilic Reduced Graphene Oxide/Diamane Microlattice Aerogel for Enhanced Sodium Metal Battery Anodes

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Март 31, 2025

Abstract Sodium metal anode holds great potential for high energy density sodium batteries. However, its practical utilization is impeded by significant volume change and uncontrolled dendrite growth. To tackle these issues, a three‐dimensional (3D) hierarchical porous sodiophilic reduced graphene oxide/diamane (rGO/diamane) microlattice aerogel constructed direct ink writing (DIW) 3D printing (3DP) method. The molten Na diffused into the rGO/diamane host to form Na@rGO/diamane anode, which can deliver an ultra‐high capacity of 78.60 mAh cm −2 (1090.94 g −1 ). Benefiting from uniform ion distribution homogeneously distributed diamane enabled dendrite‐free deposition morphology, anodes exhibit long cycle‐life over 7200 h at 1 mA with . Furthermore, also enhances long‐term stability elevated operation temperature 60 °C, sustaining prolonged lifespan 400 Notably, when integrated 3 V 2 (PO 4 ) @carbon (NVP@C) cathode full cell delivers sustained longevity, maintaining 2000 cycles retention rate 95.72%. This work sheds new insights application development stable high‐performance

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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Low-Concentration Electrolyte Design for Wide-Temperature Operation in Sodium Metal Batteries

Journal of The Electrochemical Society, Год журнала: 2025, Номер 172(1), С. 010501 - 010501

Опубликована: Янв. 1, 2025

Sodium metal batteries (SMBs) are cost-effective and environmentally sustainable alternative to lithium batteries. However, at present, limitations such as poor compatibility, low coulombic efficiency (CE), high electrolyte cost hinder their widespread application. Herein, we propose a non-flammable, low-concentration composed of 0.3 M NaPF 6 in propylene carbonate (PC), fluoroethylene (FEC), 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether (TTE). This not only reduces but also delivers rapid ion diffusion superior wetting properties. While the Na||FePO 4 system with this demonstrates slightly reduced performance room temperature compared standard-concentration formulations (S-PFT), it excels both (55 °C) (−20 temperatures, showcasing its balanced performance. At 0.5 C (charge)/1 (discharge), capacity retention reaches 92.8% 98.5% elevated temperature, CE values surpassing 99% 99.63%, respectively, significant sustained −20 °C 0.2 C. development thus offers well-rounded, economically viable path high-performance SMBs for diverse environmental applications.

Язык: Английский

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Functional p‐π Conjugated Organic Layer Empowers Stable Sodium Metal Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Abstract Sodium metal batteries (SMBs) with the advantages of high energy density and low cost have attracted extensive attention as next‐generation rechargeable battery technology. However, SMBs suffer from severe Na dendrite undesired solid electrolyte interface (SEI) layer, which inevitably destroy cycling durability safety. Herein, a p‐π conjugated organic molecule (OHTAPQ) redox‐active carbonyls pyrazines is employed robust artificial SEI layer on anode (denoted OHTAPQ@Na) to address these issues. The unique chelation N O + ions in an OHTAPQ‐based facilitates good adsorption capacity diffusion barries for uniform deposition behavior. As result, OHTAPQ@Na||OHTAPQ@Na symmetric cell shows long‐term cycle lifespan (over 1500 h at 2 mA cm −2 ), OHTAPQ@Na||Na 3 V (PO 4 ) cells deliver retention 82% after 1600 cycles. This research provides handy way protection functional organics SMBs.

Язык: Английский

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Mn Dopant Na₃Zr₂Si₂PO₁₂ with Enhanced Ionic Conductivity for Quasi-Solid-State Sodium–Metal Battery

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Фев. 6, 2025

As a promising solid electrolyte, the NASICON-type Na3Zr2Si2PO12 holds excellent application in solid-state sodium-ion batteries, which are an alternative to lithium batteries. However, its insufficient conductivity is one of key factors impeding applications. Herein, we report Mn2+-doped Na3Zr2Si2PO12, demonstrating enhanced ionic and electrochemical properties. We systematically investigate effect doping content on conductivity. The results show that Na3.4Zr1.8Mn0.2Si2PO12 has extremely high room-temperature 3.3 mS cm-1, 4 times undoped Na3Zr2Si2PO12. According Meyer-Nedle rule, it can be known as activation energy decreases, shows gradually increasing trend. Additionally, Na symmetric batteries using exhibit improved cycling performance. quasi-solid-state sodium-metal battery Na3V2(PO4)3 achieves discharge specific capacity 91.3 mAh g-1 at 0.1C, with retention 92.2% after 260 cycles, far surpassing counterpart based This work provides effective strategy for enhancing performance

Язык: Английский

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Revealing the Formation Mechanism of Inactive Sodium in Anode‐Free Sodium Batteries: Crystal Mismatch and Weak Lattice Force

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

Abstract The formation of inactive sodium on the substrate is considered to be a critical cause capacity decay in anode‐free batteries (AFSBs), but its mechanism has been insufficiently understood. Herein, for first time, it revealed that inability provide an efficient electron transport pathway stripping due crystal mismatch and weak lattice forces between intrinsic AFSBs. Therefore, indium coating strategy offers favorable matching force with proposed. Sodium can uniformly grow indium‐modified substrates low nucleation barriers, without shedding, this modulating effect sustained over extended cycling periods. Ultimately, pouch‐type AFSBs assembled Na 4 Fe 2.91 (PO ) 2 (P O 7 (NFPP) cathode (≈18 mg cm −2 mass loading) copper foil exhibit retention 78.3% after 320 cycles at 2C rate, whereas bare only less than 60 times. Most importantly, proposed work offer lattice‐ atomic‐scale insights design advanced

Язык: Английский

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