TY - JOUR
T1 - Consolidating Surface Lattice via Facile Self-Anchored Oxygen Layer Reconstruction Toward Superior Performance and High Safety Nickel-Rich Oxide Cathodes
AU - Wang, Haoyu
AU - Shi, Qi
AU - Dong, Jinyang
AU - Wang, Meng
AU - Lu, Yun
AU - Liu, Yun
AU - Liu, Jinzhong
AU - Li, Ning
AU - Huang, Qing
AU - Su, Yuefeng
AU - Wu, Feng
AU - Chen, Lai
N1 - Publisher Copyright:
© 2025 Wiley-VCH GmbH.
PY - 2025
Y1 - 2025
N2 - Nickel-rich oxide materials have been recognized as promising cathodes for state-of-art high energy lithium-ion batteries; however, challenges remain in their commercialization due to chemical and structural degradation, poor thermal stability related to oxygen lattice destabilization. Herein, this work reports a straightforward approach to stabilizing the surface oxygen framework by inducing surface reconstruction via swift proton exchange and heat treatment in argon atmosphere. The robust surface structure with localized disordered phase domains effectively suppresses interfacial parasitic reactions in highly delithiated cathodes and reduces detrimental phase degradation. Enabled by the strongly anchored oxygen framework, the consolidated surface lattice also reinforces cathode thermal stability featured by higher decomposition temperature and reduced oxygen release under thermal stress. In comparison to the unmodified counterpart, the reconstructed nickel-rich cathode demonstrates improved cycling stability and rate capability. This work reveals the critical role of regulating surface oxygen framework on the electrochemical performance and thermal behaviors, and explores the potential for feasible modification of nickel-rich cathodes for advanced lithium-ion batteries.
AB - Nickel-rich oxide materials have been recognized as promising cathodes for state-of-art high energy lithium-ion batteries; however, challenges remain in their commercialization due to chemical and structural degradation, poor thermal stability related to oxygen lattice destabilization. Herein, this work reports a straightforward approach to stabilizing the surface oxygen framework by inducing surface reconstruction via swift proton exchange and heat treatment in argon atmosphere. The robust surface structure with localized disordered phase domains effectively suppresses interfacial parasitic reactions in highly delithiated cathodes and reduces detrimental phase degradation. Enabled by the strongly anchored oxygen framework, the consolidated surface lattice also reinforces cathode thermal stability featured by higher decomposition temperature and reduced oxygen release under thermal stress. In comparison to the unmodified counterpart, the reconstructed nickel-rich cathode demonstrates improved cycling stability and rate capability. This work reveals the critical role of regulating surface oxygen framework on the electrochemical performance and thermal behaviors, and explores the potential for feasible modification of nickel-rich cathodes for advanced lithium-ion batteries.
KW - battery safety
KW - chemical passivation
KW - lattice reconstruction
KW - Ni-rich cathode
KW - structural engineering
UR - http://www.scopus.com/inward/record.url?scp=85214675383&partnerID=8YFLogxK
U2 - 10.1002/adfm.202422806
DO - 10.1002/adfm.202422806
M3 - Article
AN - SCOPUS:85214675383
SN - 1616-301X
JO - Advanced Functional Materials
JF - Advanced Functional Materials
ER -