Unraveling and suppressing the voltage decay of high-capacity cathode materials for sodium-ion batteries

Energy & Environmental Science, Год журнала: 2023, Номер 17(1), С. 210 - 218

Опубликована: Ноя. 10, 2023

The steric heterogeneity of Mn redox derived from the oxygen loss is trigger voltage decay in high-capacity oxygen-redox sodium-based layered oxides. Moreover, an electron localization strategy developed to eliminate decay.

Язык: Английский

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Facilitating an Ultrastable O3-Type Cathode for 4.5 V Sodium-Ion Batteries via a Dual-Reductive Coupling Mechanism

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(20), С. 13924 - 13933

Опубликована: Май 9, 2024

O3-type layered oxides for sodium-ion batteries (SIBs) have attracted extensive attention due to their inherently sufficient Na content, which been considered as one of the most promising candidates practical applications. However, influenced by irreversible oxygen loss and phase transition O3–P3, cathodes are always limited low cutoff voltages (typically <4.2 V), restraining full release capacity. In this study, we originally propose a dual-reductive coupling mechanism in novel Na0.8Li0.2Fe0.2Ru0.6O2 cathode with suppressed O3–P3 transition, aiming at improving reversibility redox high voltage regions. Consequently, thanks formation strong covalent Fe/Ru–(O–O) bonding inhibited slab gliding from O P phase, delivers preeminent cyclic stability among numerous within 4.5 V (a capacity retention 95.4% after 100 cycles 1.5–4.5 V). More importantly, HAADF-STEM 7Li solid-state NMR results reveal absence metal migration presence reversible Li during cycling, further contributes improved structural robustness cathode. This study proposes an innovative strategy boost anionic achieve stable high-voltage oxides, promoting development SIBs.

Язык: Английский

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Molecular-level Precursor Regulation Strategy Aids Fast-charging Hard Carbon Anodes for Sodium-ion Batteries

Nano Energy, Год журнала: 2025, Номер unknown, С. 110824 - 110824

Опубликована: Фев. 1, 2025

Язык: Английский

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Revisiting the Critical Role of Metallic Ash Elements in the Development of Hard Carbon for Advancing Sodium-Ion Battery Applications

eScience, Год журнала: 2025, Номер unknown, С. 100371 - 100371

Опубликована: Янв. 1, 2025

Язык: Английский

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Characteristics, materials, and performance of Ru-containing oxide cathode materials for rechargeable batteries

eScience, Год журнала: 2024, Номер 4(5), С. 100245 - 100245

Опубликована: Фев. 2, 2024

Li-rich Mn-based cathode materials have attracted extensive attention due to their remarkable energy density contributed by additional anionic redox. However, they always suffer from some undesired problems impeding further commercialization such as irreversible oxygen loss, transition metal migration, sluggish kinetics and so on. Fortunately, the above issue can be relieved effectively when 3d Mn is replaced 4d Ru. We focus on recent progress of Ru-containing make a detailed summarization in this review. attempt combine elucidate relationship between Ru Subsequently, up-to-date Ru-based for Li+/Na+ batteries are concluded systematically. Afterward, effects discussed depth including enhancing reversibility redox structural stability, modulating ratio cationic redox, improving Li+/Na+, inhibiting migration More importantly, future designs also proposed enlighteningly. hope review could inject new perspectives comprehend layered oxides involving provide useful guidelines achieve better rechargeable batteries.

Язык: Английский

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Lithium Orbital Hybridization Chemistry to Stimulate Oxygen Redox with Reversible Phase Evolution in Sodium-Layered Oxide Cathodes

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(32), С. 22335 - 22347

Опубликована: Авг. 2, 2024

Searching for high energy-density electrode materials sodium ion batteries has revealed Na-deficient intercalation compounds with lattice oxygen redox as promising high-capacity cathodes. However, anionic reactions commonly encountered poor electrochemical reversibility and unfavorable structural transformations during dynamic (de)sodiation processes. To address this issue, we employed lithium orbital hybridization chemistry to create Na-O-Li configuration in a prototype P2-layered Na

Язык: Английский

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Dynamic Lock‐And‐Release Mechanism Enables Reduced ΔG at Low Temperatures for High‐Performance Polyanionic Cathode in Sodium‐Ion Batteries

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 24, 2024

Abstract Low‐temperature synthesis of polyanionic cathodes for sodium‐ion batteries is highly desirable but often plagued by prolonged reaction times and suboptimal crystallinity. To address these challenges, a novel self‐adaptive coordination field regulation (SACFR) strategy based on dynamic lock‐and‐release (DLR) mechanism introduced. Specifically, urea used as DLR carrier during synthesis, which dynamically “locks” “releases” vanadium ions controlled release, simultaneously “locking” H + to enhance phosphate group thereby creating that can intelligently respond real‐time demands the system. This behavior contributes both an improvement in kinetics significant reduction Gibbs free energy change ( ΔG ). As result, kinetic efficiency thermodynamic spontaneity are greatly enhanced, enabling efficient high‐crystalline Na 3 V 2 O (PO 4 ) F (NVOPF) at 90 °C within just hours. The as‐prepared NVOPF cathode exhibits exceptional rate performance ultra‐stable cycling stability across broad temperature range. Furthermore, successful kilogram‐scale underscores practical potential innovative strategy. work pioneers chemistry providing transformative insights into material design.

Язык: Английский

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High-Entropy Doping NASICON-Cathode Breaks the Kinetic Barriers and Suppresses Voltage Hysteresis for Sodium Ion batteries

Energy storage materials, Год журнала: 2024, Номер 72, С. 103734 - 103734

Опубликована: Авг. 23, 2024

Язык: Английский

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Eliminating Charge Transfer at Cathode-Electrolyte Interface for Ultrafast Kinetics in Na-Ion Batteries

Journal of the American Chemical Society, Год журнала: 2024, Номер unknown

Опубликована: Окт. 17, 2024

Sodium-ion batteries suffer from kinetic problems stemming sluggish ion transport across the electrode-electrolyte interface, causing rapid energy decay during fast-charging or low-temperature operation. One exciting prospect to enhance kinetics is constructing neuron-like electrodes that emulate fast signal transmission in a nervous system. It has been considered these bioinspired designs electron/ion of through carbon networks. However, whether they can avoid charge transfer at interface remains unknown. By connecting openings nanotubes with surface carbon-coated Na

Язык: Английский

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Improving Oxygen‐Redox‐Active Layered Oxide Cathodes for Sodium‐Ion Batteries Through Crystal Facet Modulation and Fluorinated Interfacial Engineering

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 16, 2024

Abstract Layered oxides with active oxygen redox are attractive cathode materials for sodium‐ion batteries (SIBs) due to high capacity but suffer from rapid capacity/voltage deterioration and sluggish reaction kinetics stemming lattice release, interfacial side reactions, structural reconstruction. Herein, a synergistic strategy of crystal‐facet modulation fluorinated engineering is proposed achieve capacity, superior rate capability, long cycle stability in Na 0.67 Li 0.24 Mn 0.76 O 2 . The synthesized single‐crystal (NLMO{010}) featuring increased {010} facet exposure exhibits faster anionic delivers (272.4 mAh g −1 at 10 mA ) energy density (713.9 Wh kg performance (116.4 1 A ). Moreover, by incorporating N‐Fluorobenzenesulfonimide (NFBS) as electrolyte additive, the NLMO{010} retains 84.6% after 400 cycles 500 alleviated voltage fade (0.27 mV per cycle). Combined situ analysis theoretical calculations unveil dual functionality NFBS, which results thin yet durable interfaces on hard carbon anode scavenges highly reactive species. indicate importance fast‐ion‐transfer formulation enhance redox‐active high‐energy‐density SIBs.

Язык: Английский

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