Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104143 - 104143
Published: Feb. 1, 2025
Language: Английский
Energy storage materials, Journal Year: 2023, Volume and Issue: 63, P. 102969 - 102969
Published: Sept. 14, 2023
Language: Английский
Citations
109
ACS Nano, Journal Year: 2023, Volume and Issue: 17(20), P. 20621 - 20633
Published: Oct. 4, 2023
Nickel-rich LiNi0.8Co0.15Al0.015O2 (NCA) with excellent energy density is considered one of the most promising cathodes for lithium-ion batteries. Nevertheless, stress concentration caused by Li+/Ni2+ mixing and oxygen vacancies leads to structural collapse obvious capacity degradation NCA. Herein, a facile codoping anion (F-)-cation (Mg2+) strategy proposed address these problems. Benefiting from synergistic effect F- Mg2+, codoped material exhibits alleviated demonstrates enhanced electrochemical performance at high voltage (≥4.5 V), outperformed pristine F-/Mg2+ single-doped counterparts. Combined experimental theoretical studies reveal that Mg2+ decreases Li+ diffusion barrier enhances transport kinetics. In particular, synergistically suppresses lattice escape, alleviates stress-strain accumulation, thereby inhibiting crack propagation improving As consequence, designed Li0.99Mg0.01Ni0.8Co0.15Al0.05O0.98F0.02 (Mg1+F2) much higher retention 82.65% than NCA (55.69%) even after 200 cycles 2.8-4.5 V under 1 C. Furthermore, rate Mg1+F2||graphite pouch cell 500 89.6% compared (only 79.4%).
Language: Английский
Citations
100
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(24)
Published: March 13, 2024
Abstract The pursuit of high energy density batteries has expedited the fast development Ni‐rich cathodes. However, chemo‐mechanical degradation induced by local thermal accumulation and anisotropic lattice strain is posing great obstacles for its wide applications. Herein, a highly‐antioxidative BaZrO 3 barrier engineered LiNi 0.8 Co 0.1 Mn O 2 cathode through an in situ construction strategy first reported to circumvent above issues. It found that Zr ions are incorporated material influence on topotactic lithiation as well enhance oxygen electronegativity rigid Zr─O bonds, which effectively alleviates propagation decreases excessive oxidization charge compensation. More importantly, with ultra‐low conductivity validly impedes heat exchange between electrode electrolyte mitigate severe surface side reactions. This helps ultra‐high mass loading Li‐ion pouch cell deliver specific 690 Wh kg −1 at active level excellent capacity retention 92.5% after 1400 cycles under 1 C 25 °C. Tested temperature 55 °C, type full‐cell also exhibits 88.7% 1200 cycles.
Language: Английский
Citations
26
Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(7), P. 5607 - 5631
Published: March 13, 2024
With the commercialization of lithium-ion battery (LIB) powered electric vehicles, they have been recognized as an important green technology due to merit zero CO2 emissions mitigate global climate change. As for cathode materials, nickel-rich LiNixCoyMn1-x-yO2 (NCM) stand out high energy density. However, key issues cation migration, phase transition, formation oxygen vacancies and overcharge would cause release problems when operating at voltages, which seriously harms performance. When applied in large-scale packs, problemes mentioned above individual cells may affect overall pack their close stack. Therefore, study avoid phenomenon generation is necessary, while, a systematic summary its mechanism can help improve thermal stability LIBs. Herein, this review initiates systematically elucidate NCM followed by further summarizing effective strategies deal with phenomenon, finally give outlook on future prospects NCM.
Language: Английский
Citations
17
Energy storage materials, Journal Year: 2024, Volume and Issue: 71, P. 103587 - 103587
Published: June 21, 2024
Language: Английский
Citations
17
Carbon Neutralization, Journal Year: 2025, Volume and Issue: 4(2)
Published: Feb. 21, 2025
ABSTRACT Lithium iron phosphate (LiFePO 4 ) serves as a commonly used cathode material in lithium‐ion batteries and is an essential power source for consumer electronics electric vehicles. Nevertheless, significant degradation its electrochemical performance occurs at low temperatures, leading to energy losses, challenges charging, reduced lifespan, heightened safety concerns—critical factors LiFePO applications. This review outlines recent progress aimed enhancing the low‐temperature of batteries, concentrating on mechanisms involved various modification strategies. The primary contributing subzero temperatures are first examined. A variety strategies designed improve interfacial internal reaction kinetics cathodes under cold conditions emphasized, feasible approaches also presented. These include optimizing cell design enhance inherent reactivity employing heating techniques raise external temperatures. In conclusion, this discusses limitations associated with settings examines advancements from system level. insights provided intended motivate further developments other technologies tailored
Language: Английский
Citations
2
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(12), P. 14902 - 14911
Published: March 14, 2024
Li-rich Mn-based layered oxides (LMLOs) are expected to be the most promising high-capacity cathodes for next generation of lithium-ion batteries (LIBs). However, poor cycling stability and kinetics performance polycrystalline LMLOs restrict their practical applications due anisotropic lattice stress crack propagation during cycling. Herein, B-doped micron-sized single-crystal Co-free were obtained by molten-salt (LiNO3 H3BO3)-assisted sintering. The results reveal that low-melting-point molten salt can serve as liquid-phase media improve efficiency atomic mass transfer crystal nucleation growth. modified LMLO resist accumulation strain reduce interface side reactions, thus achieving excellent high-voltage performance. reversible specific capacity single crystals is 210.8 mAh g–1 at 1C with a voltage decay rate 1.95 mV/cycle up 161.1 10C retention 81.06% after 200 cycles.
Language: Английский
Citations
14
Progress in Materials Science, Journal Year: 2024, Volume and Issue: 143, P. 101247 - 101247
Published: Feb. 9, 2024
Language: Английский
Citations
9
ChemElectroChem, Journal Year: 2024, Volume and Issue: 11(14)
Published: April 15, 2024
Abstract The improvement of the safety, specific energy, cycle life and cost reduction Li‐ion batteries are hot research topics. Now, in pursuit high energy density, employed high‐energy‐density cathode/anode materials increased operation voltage challenge prevalent electrolyte formula, like existing ester ether electrolytes cannot withstand high‐voltage high‐capacity anode such as lithium (Li), silicon (Si) silicon‐graphite (Si−C) composite anode. It is recognized that stable electrolyte‐electrode interfaces can avoid side reactions protect electrode materials. Up to now, various additives have been developed modify electrode‐electrolyte interfaces, famous 4‐fluoroethylene carbonate, vinylene carbonate nitrate, LIBs metal (LMBs) performances improved greatly. However, lifespan higher‐energy‐density with Li/Si/Si−C high‐nickel layer oxides cathode meet request due lack ideal formula. In this review, we present a comprehensive in‐depth overview on additives, especially focused multifunctional reaction mechanisms fundamental design. Finally, novel insights, promising directions potential solutions for proposed motivate Li battery chemistries.
Language: Английский
Citations
9
Energy storage materials, Journal Year: 2024, Volume and Issue: 74, P. 103893 - 103893
Published: Nov. 6, 2024
Language: Английский
Citations
9