Heterojunction Vacancies‐Promoted High Sodium Storage Capacity and Fast Reaction Kinetics of the Anodes for Ultra‐High Performance Sodium‐Ion Batteries

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 6, 2024

Abstract Transition metal sulfides as anode materials for sodium‐ion batteries (SIBs) have the advantage of high capacity. However, their cycle‐life and rate performance at ultra‐high current density is still a thorny issue that limit applicability these materials. In this paper, carbon‐embedded heterojunction with sulfur‐vacancies regulated by ultrafine bimetallic (vacancy‐CoS 2 /FeS @C) robust interfacial C‐S‐Co/Fe chemical bonds successfully synthesized explored an material battery. By changing ratio two cations, concentration anion sulfur vacancies can be in‐situ adjusted without additional post‐treatment. The as‐prepared vacancy‐CoS @C offers ultrahigh (285.1 mAh g −1 200 A ), excellent long‐cycle stability (389.2 40 after 10000 cycles), outperforming all reported transition sulfides‐based SIBs. Both ex‐situ characterizations provide strong evidence evolution mechanism phases stable solid‐electrolyte interface (SEI) on surface. functional theory calculations show constructing reasonable significantly increase electronic conductivity. Notably, assembled @C//Na 3 V (PO 4 ) /C full‐cell shows capacity 226.2 400 cycles 2.0 , confirming material's practicability.

Язык: Английский

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Mechanically Robust Bismuth-Embedded Carbon Microspheres for Ultrafast Charging and Ultrastable Sodium-Ion Batteries

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 14, 2025

Advancements in the development of fast-charging and long-lasting microstructured alloying anodes with high volumetric capacities are essential for enhancing operational efficiency sodium-ion batteries (SIBs). These anodes, however, face challenges such as declined cyclability rate capability, primarily due to mechanical degradation reduced by significant changes (over 252%) slow kinetics storage. Herein, we introduce a novel anode design featuring densely packed bismuth (Bi) embedded within highly conductive carbon microspheres overcome aforementioned challenges. Remarkably, loading Bi tap density 2.59 g cm–3 possesses strength exceeding 590 MPa limits volume swelling only 10.9% post-sodiation. This demonstrates capacity (908.3 mAh cm–3), ultrafast chargeability (200 A g–1, full charge/discharge just 5.5 s), outstanding over 12,000 cycles maintains exceptional cycling stability even at −30 °C. The cell paired Na3V2(PO4)3 cathode retains 80% after 600 36 C, demonstrating remarkable capability 126 C (full 28.6 s). Our comprehensive experimental evaluations chemo-mechanical simulations shed light on mechanisms underpinning anode's superior performance. marks advancement durable high-performance SIBs.

Язык: Английский

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Mn incorporated BiOCl anode for high performance sodium ion batteries

Applied Surface Science, Год журнала: 2025, Номер 695, С. 162888 - 162888

Опубликована: Март 5, 2025

Язык: Английский

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Ideal Bi-Based Hybrid Anode Material for Ultrafast Charging of Sodium-Ion Batteries at Extremely Low Temperatures

Nano-Micro Letters, Год журнала: 2024, Номер 17(1)

Опубликована: Ноя. 13, 2024

Abstract Sodium-ion batteries have emerged as competitive substitutes for low-temperature applications due to severe capacity loss and safety concerns of lithium-ion at − 20 °C or lower. However, the key capability ultrafast charging ultralow temperature SIBs is rarely reported. Herein, a hybrid Bi nanoparticles embedded in carbon nanorods demonstrated an ideal material address this issue, which synthesized via high shock method. Such shows unprecedented rate performance (237.9 mAh g −1 2 A ) 60 °C, outperforming all reported SIB anode materials. Coupled with Na 3 V (PO 4 cathode, energy density full cell can reach 181.9 Wh kg 40 °C. Based on work, novel strategy high-rate activation proposed enhance performances Bi-based materials cryogenic conditions by creating new active sites interfacial reaction under large current.

Язык: Английский

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Bi2O3/Bi@CSs achieved by shock-type heating for fast and long-lasting sodium ion battery

Chemical Engineering Journal, Год журнала: 2024, Номер 498, С. 155545 - 155545

Опубликована: Сен. 7, 2024

Язык: Английский

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Prospect of bismuth and its compounds in sodium-ion batteries: A Review

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104076 - 104076

Опубликована: Янв. 1, 2025

Язык: Английский

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Synergistic Bimetallic Effects of BiSb Anodes Enable Long‐Stable Sodium Storage

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 28, 2024

Abstract Alloy‐type anodes are of interest for their resource‐rich and high theoretical capacity performance in sodium‐ion batteries (SIBs). However, severe volume expansion may lead to rapid decay electrode pulverization. In this work, metallic Bi with better structure stability is rationally selected as a skeleton form 2D BiSb alloy alleviate the expansion. Interestingly, by combining in‐situ XRD ex‐situ TEM characterizations, reversible multi‐step alloying sodium storage mechanism ↔ Na(Bi, Sb) Na 3 (Bi, 0.4 Sb 0.6 anode elucidated, partial amorphization expanded interlayer spacing also revealed, which greatly thereby enhancing electrochemical stability. Furthermore, density functional theory kinetic calculations demonstrate that demonstrates lower + adsorption energy diffusion barriers, ensuring fast electron ion transportation during storage. Benefiting from synergistic effects binary alloy, exhibits cycling 446 mAh g −1 at 0.1 A , 70% after 1100 cycles 0.5 . This work provides new insights opportunities develop advanced precise alloy‐type materials SIBs.

Язык: Английский

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Self-Template Construction of Hierarchical Bi@C Microspheres as Competitive Wide Temperature-Operating Anodes for Superior Sodium-Ion Batteries

Nano Letters, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 19, 2024

Huge volume changes of bismuth (Bi) anode leading to rapid capacity hindered its practical application in sodium-ion batteries (SIBs). Herein, porous Bi@C (P-Bi@C) microspheres consisting self-assembled Bi nanosheets and carbon shells were constructed via a hydrothermal method combined with carbothermic reduction. The optimized P-Bi@C-700 (annealed at 700 °C) demonstrates 359.8 mAh g–1 after 1500 cycles 1 A g–1. In situ/ex situ characterization density functional theory calculations verified that this relieves the expansion, facilitates Na+/electron transport, possesses an alloying-type storage mechanism. Notably, also achieved 360.8 370.3 0.05 under 0 60 °C conditions, respectively. Na3V2(PO4)3//P-Bi@C-700 exhibits 359.7 260 These hierarchical effectively moderate fluctuation, preserving structural reversibility, thereby achieving superior Na+ performance. This self-template strategy provides insight into designing high-volumetric alloy-based anodes for SIBs.

Язык: Английский

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Interfacial Chemical Linkage Enabling MWCNTs/Sb₂S₃ High Sodium Storage Performance

Energy & Fuels, Год журнала: 2024, Номер 38(14), С. 13416 - 13424

Опубликована: Июль 10, 2024

Язык: Английский

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In‐situ polymerized solid/quasi‐solid polymer electrolyte for lithium‐metal batteries: recent progress and perspectives

Chemistry - A European Journal, Год журнала: 2024, Номер unknown

Опубликована: Окт. 11, 2024

Abstract In pursuit of high energy density, lithium metal batteries (LMBs) are undoubtedly the best choice. However, leakage and inevitable dendrite growth in liquid electrolytes seriously hinder its practical application. Solid/quasi‐solid state have emerged as an answer to solve above issues. Especially, polymer with excellent interface compatibility, flexibility, ease machining become a research hotspot for LMBs. Nevertheless, contact between electrolyte inorganic electrode materials low ionic conductivity restrict development. On account these, situ polymerized is proposed. Polymer solid produced through polymerization promote robust while simplifying preparation steps. This review summarized latest progress These were divided into three parts according their methods: thermally induced polymerization, chemical initiator ionizing radiation so on. Furthermore, we concluded major challenges future trends It's hoped that this will provide meaningful guidance on designing high‐performance

Язык: Английский

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