High‐abundance and low‐cost anodes for sodium‐ion batteries

Carbon Neutralization, Год журнала: 2024, Номер unknown

Опубликована: Сен. 27, 2024

Abstract Nowadays, sodium‐ion batteries are considered the most promising large‐scale energy storage systems (EESs) due to low cost and wide distribution of sodium sources as well similar working principle lithium‐ion (LIBs). Therefore, screening suitable materials with high abundance, cost, excellent reliability modified different strategies based on them is key point for development (SIBs). In addition, ideal anodes elements also greatly influence SIB systems, determining application. Herein, recent advances in carbon, iron, manganese, phosphorus‐based various types, such hard iron oxides, manganese red phosphorus, highlighted. The mechanisms structure‐function properties these four types summarized analyzed detail. Considering commercial profits that EESs can bring their suitability mass electrode manufacturing, participation high‐abundance low‐cost Fe, Mn, C, P convincing encouraging.

Язык: Английский

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Elucidating Thermal Decomposition Kinetic Mechanism of Charged Layered Oxide Cathode for Sodium‐Ion Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract The safety of the P2‐type layered transition metal oxides (P2‐Na x TMO 2 ), a promising cathode material for sodium‐ion batteries (SIBs), is prerequisite grid‐scale energy storage systems. However, previous thermal runaway studies mainly focused on morphological changes resulting from gas production detection and thermogravimetric analysis, while structural chemical reactions underlying these processes are still unclear. Herein, comprehensive methodology to unveil an interplay mechanism among phase structures, interfacial microcrack, stability charged P2‐Na 0.8 Ni 0.33 Mn 0.67 O (NNMO) 0.21 Li 0.12 (NNMO‐Li) at elevated temperatures established. Combining series crystallographic thermodynamic characterization techniques, specific occurring in NNMO materials during clarified first solidly proved that doping effectively hinders dissolution ions, reduces oxygen release, enhances temperatures. Importantly, based Arrhenius nonisothermal kinetic equations, triplet model successfully constructed in‐depth elucidate decomposition reaction , demonstrating such assessment provides new perspective building high‐safety SIBs.

Язык: Английский

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Single crystal P2-type layered cathodes with optimized crystal plane orientation improved high voltage stability for sodium-ion batteries

Chinese Chemical Letters, Год журнала: 2025, Номер unknown, С. 110892 - 110892

Опубликована: Янв. 1, 2025

Язык: Английский

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Green Recovery of Toxic Prussian White Cathode From Spent All‐Climate Sodium‐Ion Batteries Using Low‐Melting Mixture Solvents (LoMMSs)

Battery energy, Год журнала: 2025, Номер unknown

Опубликована: Янв. 21, 2025

ABSTRACT A large number of spent sodium‐ion batteries (SIBs) will be produced as SIBs become more widely used. However, components SIBs, such the cathode Prussian white Na 2 Mn[Fe(CN) 6 ], are toxic and hazardous, leading to water soil pollution posing a threat human health. Therefore, recycling is important meaningful. Here, we use phytic acid‐based low‐melting mixture solvents (LoMMSs) for efficient recovery hazardous at mild temperatures. Results show that highest leaching efficiency from could reach 94.7% by polyethylene glycol 200:phytic acid (14:1) 80°C 24 h with liquid/solid ratio 50:1. Furthermore, metal extracted leachate found precipitate when used anti‐solvent, ammonium hydroxide achieving precipitation 89.3% room temperature.

Язык: Английский

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Resolving the relationship between capacity/voltage decay and phase transition by accelerating the layered to spinel transition

Chemical Science, Год журнала: 2025, Номер 16(10), С. 4237 - 4244

Опубликована: Янв. 1, 2025

Lithium-rich cathode materials are some of the most promising choices for lithium-ion batteries due to their excellent energy density (>900 W h kg-1). However, severe voltage/capacity degradation during cycling has seriously hindered further commercialization lithium-rich materials. Current research efforts focused on enhancing voltage and capacity retention. Here, coating FeF3 specific crystal planes is utilized achieve a trend that very different from as-received material. Using this as an entry point, relationship between was studied in depth. The oriented coated material undergoes more drastic phase transition cycling, yet its decay remains basically same original sample (769.6 mV after 200 cycles, compared 723.5 sample). Notably, retention rate significantly improved (97% cycles vs. 75% pristine material). These findings suggest do not interact with each other does seem negatively affect voltage. This conclusion can also be extrapolated oxygen-reducing oxide systems help understand decay. modification generalized applicable

Язык: Английский

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Copper-substituted P3-type Na0.54Mn0.64Fe0.16Mg0.1Cu0.1O2 cathode material for sodium-ion batteries with enhanced anionic redox reversibility

Rare Metals, Год журнала: 2025, Номер unknown

Опубликована: Янв. 31, 2025

Язык: Английский

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Dual-enhancements of Stability and Wettability in O3-Na0.95Ni1/3Fe1/3Mn1/3O2 Cathodes by Converting Surface Residual Alkali into Ultalthin Na2Ti3O7 Coatings

Nanoscale, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Residual-alkali-derived Na 2 Ti 3 O 7 coatings boost electrolyte wettability and electrochemical performance of a layered oxide cathode for sodium-ion batteries.

Язык: Английский

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In Situ Intergrowth Tunnel/P3 Cathode Enhancing High Voltage Stability Toward High Energy Sodium‐Ion Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 16, 2025

Abstract Improving the upper voltage limit in layered oxide cathodes is an effective strategy to achieve high‐energy sodium‐ion batteries (SIBs). However, high‐voltage region with deep Na + extraction, phase structure becomes severely unstable, and interfacial side reactions result rapid capacity decay, hindering their commercial application. This issue particularly pronounced low cost P3 Mn‐based cathode materials, where Jahn–Teller effect exacerbates instability. Here, robust tunnel introduced into particles form intergrowth Na₀.₅Ni₀.₁₅Mn₀.₆₅Al₀.₂O₂ (T/P‐NNMA) materials. The tightly integrated enables pseudo‐solid solution reaction, suppresses irreversible oxygen release, maintains stable interface stability even when charge cut‐off increases 4.5 V. Consequently, T/P‐NNMA delivers outstanding reversible of 187.8 mAh g −1 at 0.1 C, yielding energy density 544.8 Wh kg (based on cathode) displays excellent retention 83.08% over 200 cycles 1.0 C. Embedding P3‐type material high interficial offers a promising for development SIBs.

Язык: Английский

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Durable Potassium Storage Achieved by Boron Coordination in a P2-Type Layered Oxide Skeleton

Nano Letters, Год журнала: 2025, Номер unknown

Опубликована: Апрель 11, 2025

Layered transition-metal (TM) oxides are of high application value as a cathode for potassium (K)-ion batteries toward energy density. However, the inadequate covalency TM-O bond inevitably induces TM migration and subsequent irreversible structural transformation upon operating, which results in poor rate long cycle reliability. To address this issue, we employed boron coordination chemistry to manipulate local electronic structure prototype P2-layered K0.5Mn0.8Ni0.15B0.05O2 (KMNBO). The B ions with electronegativity reside slabs boost layered by attracting an tendency surrounding oxygen, upgrades tolerance during repeated K-ion (de)intercalation process. sluggish intrinsic K+ could be simultaneously alleviated reducing Coulomb force between K O. This study breaks stereotype crystal lattice provides new insight into developing long-durability cathodes.

Язык: Английский

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P2/P3 Biphasic layered oxide cathode enabled by additional electron-holes on oxygen for high-capacity sodium-ion batteries

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

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