Enhancing Lithium‐Ion Battery Performance With Ultra‐Thin LiF Coating: A Study on Surface Vapor Deposition for LiNi0.9Co0.05Mn0.05O2 Cathode Material Stabilization DOI Creative Commons
Wenna Xie,

Xiaoqian Ma,

J. Y. Shi

et al.

Battery energy, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

ABSTRACT High‐nickel ternary cathode (HNCM) materials are regarded as the primary choice for lithium‐ion batteries (LIBs) due to their high energy density. However, development is limited by lithium–nickel mixing, microcrack generation, and surface side reactions. Herein, a combined roll‐to‐roll vacuum vapor deposition process used prepare LiNi 0.9 Co 0.05 Mn O 2 (NCM9055) material with dense, ultrathin, robust lithium fluoride (LiF) protective layer. Compared traditional methods, this approach allows precise control over thickness rate of deposited LiF layer, producing uniform layer that enhances stability. This not only effectively reduces direct contact between electrolyte electrode surface, mitigating corrosion reactions, but also strengthens structural integrity cathode, thereby significantly improving cycling The NCM9055 10 nm exhibits enhanced electrochemical performance, especially at cut‐off voltages 4.3 4.5 V, excellent performance 1 C. Additionally, introduction improves thermal stability NCM9055, further enhancing safety high‐nickel batteries. study demonstrates combination processing fast effective modification technique highlights advantages in forming homogeneous which essential rapid production density HNCM advanced LIBs.

Language: Английский

Spatial and anchoring effects of zirconia-doped 3D scaffolds for stable zinc anodes DOI

Jinqiu Ye,

Tiancheng Ge, Xin Qu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159397 - 159397

Published: Jan. 10, 2025

Language: Английский

Citations

1
Unveiling the Origin of Oxygen Framework Stability in Ultra‐High Nickel Layered Oxide Cathodes DOI Open Access
Fangyan Liu, Shihao Li,

Chihon Leung

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Ultra-high nickel layered oxides are recognized as promising cathode candidates for high-energy-density lithium-ion batteries due to their enhanced overall capacity and elevated operating voltage. However, the interlayer sliding of transition metal-oxygen octahedra (TMO6) instability lattice oxygen at high voltages ultra-high oxide cathodes pose significant challenges development. Herein, origin framework stability is investigated by incorporating high-covalent element Mo in both bulk surface using a one-step integrated method material LiNi0.92Co0.08O2. It revealed that apart from isolation protection effect Mo-enriched layer, suppression Li/Ni antisite defects Mo6+ with strong covalency plays critical role reducing configurations activated anionic redox reaction stabilizing structure. Benefiting this, reversibility significantly enhanced, enabling more oxidized exist form dimer ions O2n-$O_2^{n - }$ rather than being lost gaseous O2. Consequently, modified demonstrates improved diffusion kinetics optimized electrochemical performance

Language: Английский

Citations

1
Integrated Lithium-Rich yLi2MnO3∙(1-y)LiNi1/3Co1/3Mn1/3O2 Layered Cathode Nanomaterials for Lithium-ion Batteries DOI Open Access
Ashraf E. Abdel-Ghany,

Rasha S. El-Tawil,

Ahmed M. Hashem

et al.

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(3), P. 1346 - 1346

Published: Feb. 5, 2025

Integrated Li- and Mn-rich layered cathodes yLi2MnO3∙(1-y)LiMO2 (M = Mn, Co, Ni) have shown their ability to deliver specific capacities close 300 mAh g−1, but significant drawbacks are capacity fading voltage decay during cycling. In this study, new stoichiometric high-voltage Li-rich oxides with y 0.0, 0.3, 0.5 synthesized in identical conditions using a sol–gel method. These compositions were analyzed determine optimal configuration understand extraordinary behavior. Their nanostructural properties investigated XRD Raman spectroscopy, while the morphology grain-size distribution of samples characterized by BET, SEM HRTEM analyses. The electrochemical performances integrated compounds evaluated through galvanostatic cycling impedance spectroscopy. best cathode material 0.5Li2MnO3∙0.5LiNi1/3Co1/3Mn1/3O2 had retention 83.6% after 100 cycles potential range 2.0–4.8 V vs. Li+/Li.

Language: Английский

Citations

0
Potential-dependent interfacial specific adsorption accelerates charge transfer in sodium-ion batteries DOI
Yao Xiao, Shaowen Xu, Wei Liu

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Abstract Fast-charging capabilities of sodium-ion batteries have emerged as a pivotal objective within the energy storage fields. Sodium layered P2-type oxide cathodes most potential for fast charging due to their inherent Na+ mobility. However, electrochemical polarization and interfacial charge transfer especially at high state are limiting factors in quick kinetic response large current. Herein, we demonstrate that typical cathode (Na0.7Ni0.27Mn0.53Cu0.04Fe0.08Ti0.08O2) achieves high-rate capacities through avoiding octahedral stacking faults, maintaining lattice oxygen activity controlling anion-specific adsorption. The intermediate Z-phase intergrowth structure mitigate hysteresis thermodynamic by simultaneously suppressing detrimental P2−O2 phase evolution irreversible redox. potential-dependent competitive adsorption mechanism between anions solvent molecules is revealed inner Helmholtz plane (IHP), where optimized elevates difference IHP, accelerating across electrode/electrolyte interface. Furthermore, F-rich cathode/electrolyte interphase generated from IHP avoids transition metal dissolution surface collapse stable long-term cycling. This study highlights synergistic coupling interaction bulk stability environment optimization ensuring Na+/charge transport kinetics batteries.

Language: Английский

Citations

0
Enhancing Lithium‐Ion Battery Performance With Ultra‐Thin LiF Coating: A Study on Surface Vapor Deposition for LiNi0.9Co0.05Mn0.05O2 Cathode Material Stabilization DOI Creative Commons
Wenna Xie,

Xiaoqian Ma,

J. Y. Shi

et al.

Battery energy, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

ABSTRACT High‐nickel ternary cathode (HNCM) materials are regarded as the primary choice for lithium‐ion batteries (LIBs) due to their high energy density. However, development is limited by lithium–nickel mixing, microcrack generation, and surface side reactions. Herein, a combined roll‐to‐roll vacuum vapor deposition process used prepare LiNi 0.9 Co 0.05 Mn O 2 (NCM9055) material with dense, ultrathin, robust lithium fluoride (LiF) protective layer. Compared traditional methods, this approach allows precise control over thickness rate of deposited LiF layer, producing uniform layer that enhances stability. This not only effectively reduces direct contact between electrolyte electrode surface, mitigating corrosion reactions, but also strengthens structural integrity cathode, thereby significantly improving cycling The NCM9055 10 nm exhibits enhanced electrochemical performance, especially at cut‐off voltages 4.3 4.5 V, excellent performance 1 C. Additionally, introduction improves thermal stability NCM9055, further enhancing safety high‐nickel batteries. study demonstrates combination processing fast effective modification technique highlights advantages in forming homogeneous which essential rapid production density HNCM advanced LIBs.

Language: Английский

Citations

0