Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137392 - 137392
Published: March 1, 2025
Language: Английский
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
Citations
71
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(24)
Published: Jan. 21, 2024
Abstract The P2‐type layered transition metal oxide cathodes confront formidable challenges, including irreversible deleterious phase transitions, metals migration, and sluggish Na + diffusion kinetics, which hamper their rapid commercial application in sodium ion batteries (SIB). In this work, an entropy tuning with dual‐site substitution strategy is proposed to address the aforementioned issues. tailored [Na 0.67 Zn 0.05 ]Ni 0.22 Cu 0.06 Mn 0.66 Ti 0.01 O 2 (NZNCMTO) cathodes, strategic incorporation of ions serves occupy sites, intentionally disrupting Na/vacancy ordering establishing a reinforcing “pillar” effect within framework. Furthermore, for Ni bolsters covalent bonding lattice oxygen, thereby impeding migration leading near‐zero strain structural evolution during charge discharge process. Density functional theory calculations confirmed that entropy‐tuned NZNCMTO substantially lowered energy barrier improved electronic conductivity. Consequently, cathode exhibits impressive high practical capacity 91.54 mAh g −1 at rate 10 C, along outstanding cycling stability, maintaining near 100% retention over 500 cycles current density C. This work presents innovative blueprint designing high‐performance sodium‐ion battery materials.
Language: Английский
Citations
47
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(10)
Published: Jan. 5, 2024
LiNi
Language: Английский
Citations
28
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 29, 2024
Abstract Cathode materials are the core components of lithium‐ion batteries owing to determination practical voltage and effective energy battery system. However, advanced cathodes have faced challenges related cation migration intermixing. In this review, study summarizes structural failure mechanisms due mixing cathodes, including Ni‐rich Li‐rich layered spinel, olivine, disordered rock‐salt materials. This review starts by discussing degradation caused intermixing in different focusing on electronic structure, crystal electrode structure. Furthermore, optimization strategies for inhibition rational utilization systematically encapsulated. Last but not least, remaining proposed perspectives highlighted future development cathodes. The accurate analysis using characterization, precise control material synthesis, multi‐dimensional synergistic modification will be key research areas provides a comprehensive understanding emerge as pivotal controllable factors further
Language: Английский
Citations
28
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)
Published: Jan. 13, 2024
Abstract The limited cyclability of high‐specific‐energy layered transition metal oxide (LiTMO 2 ) cathode materials poses a significant challenge to the industrialization batteries incorporating these materials. This limitation can be attributed various factors, with intrinsic behavior crystal structure during cycle process being key contributor. These factors include phase induced cracks, reduced Li active sites due Li/Ni mixing, and slower + migration. In addition, presence synthesis‐induced heterogeneous phases lattice defects cannot disregarded as they also contribute degradation in performance. Therefore, gaining profound understanding intricate relationship among material synthesis, structure, performance is imperative for development LiTMO . paper highlights pivotal role structural play provides comprehensive overview how control influence specific pathways evolution synthesis process. it summarizes scientific challenges associated diverse modification approaches currently employed address cyclic failure overarching goal provide readers insights into study
Language: Английский
Citations
26
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(9), P. 11377 - 11388
Published: Feb. 22, 2024
Ni-rich layered oxides LiNixCoyMn1–x–yO2 (NCMs, x > 0.8) are the most promising cathode candidates for Li-ion batteries because of their superior specific capacity and cost affordability. Unfortunately, NCMs suffer from a series formidable challenges such as structural instability incompatibility with commonly used electrolytes, which seriously hamper practical applications on large scale. Herein, Al/Ta codoping modification strategy is proposed to improve performance LiNi0.83Co0.1Mn0.07O2 cathode, as-prepared Al/Ta-modified delivers exceptional cycling stability retention 97.4% after 150 cycles at 1C an excellent rate high 143.2 mAh g–1 even 3C. Based experimental study, it found that NCM strengthened due regulated coordination oxygen by introducing robust Ta–O covalent bond, prevents structure collapsing. Moreover, reconstructed rock-salt-like surface capable effectively inhibiting interfacial side reactions well overgrowth cathode–electrolyte interface. Theoretically, energy Li/Ni mixing significantly increased introduction Al Ta elements in codoped NCM, leading inhibited adverse phase transition during cycling. A feasible pathway designing developing advanced materials provided this work.
Language: Английский
Citations
20
Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 95, P. 112585 - 112585
Published: June 15, 2024
Language: Английский
Citations
18
Nano Energy, Journal Year: 2025, Volume and Issue: 136, P. 110741 - 110741
Published: Feb. 1, 2025
Language: Английский
Citations
2
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149827 - 149827
Published: Feb. 21, 2024
Language: Английский
Citations
16
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 17, 2024
Abstract Microstructural engineering on nickel‐rich layered oxide (NRLO) cathode materials is considered a promising approach to increase both the capacity and lifespan of lithium‐ion batteries by introducing high valence‐state elements. However, rational regulation NRLO microstructures based deep understanding its enhancement mechanism remains challenging. Herein for first time, it demonstrated that an 14 mAh g −1 in reversible at cycle can be achieved via tailoring micro nano structure through tungsten. Aberration‐corrected scanning transmission electron microscopy (STEM) characterization reveals formation modified microstructure featured as coherent spinel twin boundaries. Theoretical modeling electrochemical investigations further demonstrate related such boundaries, which lower Li + diffusion barrier thus allow more participate deeper phase transitions. Meanwhile, surface grain boundaries NRLOs are found generating dense uniform LiW x O y phase, extends life reducing side reactions with electrolytes. This work enables comprehensive capacity‐increased endows remarkable potential microstructural capacity‐ lifespan‐increased NRLOs.
Language: Английский
Citations
16