Electronic structure formed by Y2O3-doping in lithium position assists improvement of charging-voltage for high-nickel cathodes

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

High-capacity power battery can be attained through the elevation of cut-off voltage for LiNi0.83Co0.12Mn0.05O2 high-nickel material. Nevertheless, unstable lattice oxygen would released during lithium deep extraction. To solve above issues, electronic structure is reconstructed by substituting Li+ ions with Y3+ ions. The dopant within Li layer could transfer electrons to adjacent oxygen. Subsequently, accumulated in site are transferred nickel highly valence state under action reduction coupling mechanism. modified strategy suppresses generation defects regulating local structure, but more importantly, it reduces concentration reactive Ni4+ species charging state, thus avoiding evolution an unexpected phase transition. Strengthening strength between layers and transition metal finally realizes fast-charging performance improvement cycling stability enhancement high voltage. Authors report on restructuring a material This mechanism improving high-voltage stability.

Language: Английский

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Regulating interfacial chemistry and kinetic behaviors of F/Mo co-doping Ni-rich layered oxide cathode for long-cycling lithium-ion batteries over −20 °C–60 °C

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 94, P. 449 - 457

Published: March 13, 2024

Language: Английский

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A multifunctional dual cation doping strategy to stabilize high-voltage medium-nickel low-cobalt lithium layered oxide cathode

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 663, P. 961 - 970

Published: March 2, 2024

Language: Английский

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Precise modulation of surface lattice to reinforce structural stability of high-nickel layered oxide cathode by hafnium gradient doping

Energy storage materials, Journal Year: 2024, Volume and Issue: 69, P. 103400 - 103400

Published: April 9, 2024

Language: Английский

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Enhancing the cycling stability of nickel-rich oxide cathode materials through a multifunctional CeO2 coating

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 687, P. 118 - 130

Published: Feb. 8, 2025

Language: Английский

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Synergistic enhancement of LiNi0.9Co0.05Mn0.05O2 cathode performance through F− doping and Gd2O3 coating: Mechanistic insights into rate capability and cycling stability

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 119, P. 116394 - 116394

Published: March 29, 2025

Language: Английский

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High-Capacity and High-Rate sodium storage of CoS2/NiS2@C anode material enabled by interfacial C-S covalent bond and Mott–Schottky heterojunction

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 476, P. 146801 - 146801

Published: Oct. 20, 2023

Language: Английский

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Tuning Dopant Distribution for Stabilizing the Surface of High‐Nickel Layered Oxide Cathodes for Lithium‐Ion Batteries

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(3)

Published: Nov. 29, 2023

Abstract Layered oxide cathodes with a high‐nickel (Ni ≥ 0.9) content exhibit great potential for enabling high‐energy‐density lithium‐ion batteries. However, their practical feasibility and cycle life are hampered by severe surface reactivity the electrolyte. A LiNi 0.90 Co 0.05 Al O 2 cathode is presented enriched on (S‐NCA) benchmark it against obtained conventional co‐precipitation method that has uniform distribution throughout bulk (B‐NCA). The S‐NCA greatly outperform an impressive capacity retention of 84% after 1000 cycles in pouch full cells graphite anode compared to 62% B‐NCA. Advanced characterization methodologies, including time‐of‐flight secondary‐ion mass spectrometry, reveal Al‐enriched morphology facilitates formation robust, thin electrode‐electrolyte interphase (EEI), effectively suppressing oxidative decomposition electrolyte, gas generation, metallic dead lithium anode. results illustrate electrolyte primary factor limiting high‐Ni cathodes. work provides valuable insights toward viability ultrahigh‐Ni

Language: Английский

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Architecting versatile NiFe2O4 coating for enhancing structural stability and rate capability of layered Ni-rich cathodes

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 470, P. 144210 - 144210

Published: June 25, 2023

Language: Английский

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Effective Upcycling of Degraded NCM Cathode Materials Assisted by Surface Engineering for High‐Performance Lithium‐Ion Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 21, 2024

Abstract Lithium‐ion batteries (LIBs) with ternary oxide cathode materials are the prevalent energy storage devices for electric vehicles, and huge amounts of spent LIBs pose severe challenges in terms environmental impact resource management. Particularly, proper handling degraded is central importance sustainable closed‐loop development industry. In this context, direct regeneration oxides toward reusable high‐performance environmentally economically favorable contrast to present metallurgical recycling methods. work, a simple effective two‐step method demonstrated regenerate NCM 622 (LiNi 0.6 Co 0.2 Mn O 2 ) by elemental compensation structural restoration. Moreover, multi‐functional LTO (Li 4 Ti 5 12 surface coating simultaneously designed guarantee rapid Li + diffusion stable regenerated product. Therefore, LTO‐coated show excellent electrochemical performance; specifically, initial discharge capacity (183.0 mAh g −1 at 0.1 C), rate capability (90.0 10 cycling stability (79.3% retention after 200 cycles) even comparable those fresh materials. The as‐established upcycling strategy may shed light on value‐added thereby virtuous cycle LIBs.

Language: Английский

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