Si doping to passivate high-voltage medium‑nickel low-cobalt layered oxide cathode reactivity enabling longer life lithium-ion battery

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 84, P. 110944 - 110944

Published: Feb. 20, 2024

Language: Английский

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Coating Effect of Various-Phase Alumina Nanoparticles on NCM811 Cathode for Enhancing Electrochemical Performance of Lithium-Ion Batteries

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(9), P. 3904 - 3915

Published: May 1, 2024

Surface coating is a vital approach for addressing the aging of cathode materials in lithium-ion batteries. In this study, we synthesized various-phase alumina nanoparticles by subjecting boehmite to different temperatures and investigated impact these distinct phases when used as layer on performance nickel-rich materials. Our findings demonstrate that any-phase Al2O3-coated material shows enhanced electrochemical at high operating voltage (4.5 V). These Al2O3 coatings effectively inhibit side reactions resulting from direct contact between active electrolyte, reduce dissolution transition metal ions, facilitate formation uniform solid electrolyte interface (SEI). Notably, sub-stable-phase exhibit better rate low currents. The stable-phase (α-Al2O3)-coated best cycling stability with capacitance retention 85.1% after 100 cycles 5C under 45 °C. And α/θ-mixed-phase Nickel-rich cathodes (NCM) achieves excellent stability.

Language: Английский

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Improved electrochemical performance of Co-free Ni-rich cathode material for lithium-ion battery through multi-element composite modification

Electrochimica Acta, Journal Year: 2024, Volume and Issue: 477, P. 143804 - 143804

Published: Jan. 9, 2024

Language: Английский

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Sb-anchoring single-crystal engineering enables ultra-high-Ni layered oxides with high-voltage tolerance and long-cycle stability

Nano Energy, Journal Year: 2024, Volume and Issue: unknown, P. 110413 - 110413

Published: Oct. 1, 2024

Language: Английский

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Safety Issues of Layered Nickel-Based Cathode Materials for Lithium-Ion Batteries: Origin, Strategies and Prospects

Batteries, Journal Year: 2023, Volume and Issue: 9(3), P. 156 - 156

Published: March 1, 2023

Layered lithium transition metal (TM) oxides LiTMO2 (TM = Ni, Co, Mn, Al, etc.) are the most promising cathode materials for lithium-ion batteries because of their high energy density, good rate capability and moderate cost. However, safety issue arising from intrinsic thermal instability nickel-based is still a critical challenge further applications in electric vehicles storage power stations. The main reasons include side reactions between highly reactive Ni3+/4+ liquid electrolyte, oxygen release accompanied by structural phase transition, internal microcrack propagation owing to low strength spherical secondary particles. Great efforts have been invested modify such as stabilization bulk structure element doping, surface engineering, nanostructure design, particle mono-crystallization. In this review, we summarize these advances try give an in-depth insight into origin materials. More importantly, some effective strategies improve stability outlined, expecting accelerate future development layered TM with safety.

Language: Английский

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Stabilizing high-Ni cathodes with gradient surface Ti-enrichment

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 151208 - 151208

Published: April 15, 2024

Language: Английский

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Simple Synchronous Dual-Modification Strategy with Zr⁴⁺ Doping and CeO₂ Nanowelding to Stabilize Layered Ni-Rich Cathode Materials

ACS Applied Energy Materials, Journal Year: 2023, Volume and Issue: 6(10), P. 5473 - 5485

Published: May 10, 2023

A Ni-rich layered oxide, one promising cathode for lithium-ion batteries (LIBs), exhibits the advantages of low cost and high capacity but suffers from rapid loss due to bulk structural instability surface side reactions. Herein, a simple synchronous dual-modification strategy with Zr4+ doping CeO2 nanowelding is proposed address such issues. Utilizing migration energy difference Zr Ce ions in structures, one-step high-temperature sintering LiNi0.8Co0.1Mn0.1O2 particles nitrate distributions enables simultaneous modification. Therein, occupying Li sites can improve Li+ diffusion rate stabilize crystal structure, while on provides between grain boundaries resistance electrolyte erosion. Theoretical calculations series structure/composition characterizations (i.e., neutron scattering, situ X-ray diffraction, etc.) validated its role stabilizing cathodes. The synergistic effect an impressive initial 187.2 mAh g–1 (2.7–4.3 V vs Li/Li+) 86.1% retention after 200 cycles at 1 C capabilities 146.6 127.3 5 10 C, respectively. Upon increasing testing temperature 60 °C, dual-modified discharge 203.5 good 80.8% 100 0.5 C. present utilizing metal achieve modification will offer fresh insights materials LIBs, which be widely used other kinds various materials.

Language: Английский

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Revealing Cycling Rate-Dependent Capacity Decay in LiNi0.6Co0.2Mn0.2O2 at 4.6 V

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104187 - 104187

Published: March 1, 2025

Language: Английский

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High magnetic field-induced structural transformation of NiFe2O4/Fe2O3 heterostructures for enhancing lithium storage performance

Transactions of Nonferrous Metals Society of China, Journal Year: 2025, Volume and Issue: 35(3), P. 932 - 944

Published: March 1, 2025

Language: Английский

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Theoretical study of complexes based on lithium tetraamine and its fluorinated derivatives in interaction with Li−, Na−, and K− anions: study of static and dynamic NLO parameters by DFT

Journal of Molecular Modeling, Journal Year: 2025, Volume and Issue: 31(5)

Published: April 29, 2025

Language: Английский

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