A study of the thermodynamic stability of lattice oxygen in Li-rich cathode Li1.25Ni0.5Mn0.25O2 during operation DOI
Huiyuan Chen,

C. G. Shu,

Hao Deng

et al.

Journal of Solid State Electrochemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Language: Английский

Suppressing Intergranular Cracking with Near-Surface Layer Regulation for Electrochemical-Thermal Stabilization of LiCoO2 DOI

Kangwei Song,

Yu Shen,

Tongmin Xu

et al.

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

Published: Jan. 1, 2025

To further meet the application needs of lithium-ion batteries, developing cathodes with higher voltage and operating temperatures has become a primary goal. However, LiCoO2 encounter structural issues, particle fracture, side reactions during high-voltage high-temperature cycling. Thus, this work designs novel interface engineering approach involving near-surface Li layer regulation enhances stability R3̄m layered structure, suppressing intergranular cracking. An undistorted surface reduced phase transitions was revealed by HAADF-STEM. The post-cycle simulations XRD stabilizes interplanar spacing. strong B-O bonds lower O 2p energies, preventing oxygen loss confirmed XPS band structure. Therefore, even under 50 °C, half-cell maintains capacity retention rate 79% after 200 cycles at 5C 4.5 V.

Language: Английский

Citations

2
Research progress on cathode materials for lithium-ion batteries DOI

Bao Yuanyuan,

Xiaoying Guo, Wei Li

et al.

Journal of Solid State Electrochemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

Citations

0
A study of the thermodynamic stability of lattice oxygen in Li-rich cathode Li1.25Ni0.5Mn0.25O2 during operation DOI
Huiyuan Chen,

C. G. Shu,

Hao Deng

et al.

Journal of Solid State Electrochemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Language: Английский

Citations

0