Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112646 - 112646
Published: April 1, 2025
Language: Английский
Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 17(1), P. 210 - 218
Published: Nov. 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.
Language: Английский
Citations
51
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(20), P. 13924 - 13933
Published: May 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.
Language: Английский
Citations
24
eScience, Journal Year: 2025, Volume and Issue: unknown, P. 100371 - 100371
Published: Jan. 1, 2025
Language: Английский
Citations
6
Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110824 - 110824
Published: Feb. 1, 2025
Language: Английский
Citations
4
eScience, Journal Year: 2024, Volume and Issue: 4(5), P. 100245 - 100245
Published: Feb. 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.
Language: Английский
Citations
12
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(32), P. 22335 - 22347
Published: Aug. 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
Language: Английский
Citations
10
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: July 20, 2024
Compensating for the irreversible loss of limited active sodium (Na) is crucial enhancing energy density practical sodium-ion batteries (SIBs) full-cell, especially when employing hard carbon anode with initially lower coulombic efficiency. Introducing sacrificial cathode presodiation agents, particularly those that own potential anionic oxidation activity a high theoretical capacity, can provide additional sources compensating Na loss. Herein, Ni atoms are precisely implanted at sites within
Language: Английский
Citations
9
Energy storage materials, Journal Year: 2024, Volume and Issue: 72, P. 103734 - 103734
Published: Aug. 23, 2024
Language: Английский
Citations
9
Small, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 16, 2025
The local structure plays a crucial role in oxygen redox reactions, which boosts the capacity of layered oxide cathodes for sodium-ion batteries. While studies on structural ordering have primarily focused intra-layer ordering, there has been limited research inter-layer stacking cathode materials In this work, impact and regulation anionic kinetics stability are explored through experimental analysis theoretical calculations. Cu2+ substitution is introduced to adjust transition metal P2-Na0.67Mg0.28Mn0.72O2, obtaining zig-zag stacked honeycomb superlattice P2- Na0.67Cu0.14Mg0.14Mn0.72O2. mitigates cation migration, improves reversibility even at deeply desodiation state Na0.05, reductive coupling between cationic processes facilitates electron transfer from copper ions governs properties electrochemical hysteresis. A full cell with hard carbon anode shows commendable energy density high power density. This study paves an optional path enhancing dynamics chemistry P2-type battery systems.
Language: Английский
Citations
1
Energy & Environmental Science, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
We developed an innovative high-temperature shock (HTS) technique to synthesize uniformly coated materials, resulting in enhanced surface structures, improved cycling stability, and pouch cells retaining over 70% capacity after 700 cycles.
Language: Английский
Citations
1