TY - JOUR AU1 - Yuan, Weijing AU2 - Peng, Wei AU3 - Wu, Changxu AU4 - Liu, Na AU5 - Shen, Chongheng AU6 - Xiao, Zuoguo AU7 - Liu, Jinquan AU8 - Li, Chenxi AU9 - Guo, Yi AU1 - Huang, Qiqiang AU1 - Zhang, Peng AU1 - Pan, Hongkun AU1 - Wen, Lianghao AU1 - Shi, Lewei AU1 - Lu, Languang AU1 - Ren, Dongsheng AU1 - Wu, Kai AU1 - Ouyang, Minggao AU1 - Liu, Xiang AB - Lithium‐ion batteries are the main power source for portable devices and electric vehicles due to their high energy density and low self‐discharge rate. In practical applications, batteries often experience extended resting periods at high charge levels after being fully charged. However, most studies focus on continuous cycling without considering intermittent resting, which can lead to flawed failure analysis and hinder optimization of Ni‐rich cathode batteries. This study explores the degradation mechanisms of Ni‐rich cathode full‐cells subjected to intermittent resting after charging, revealing that Ni‐rich cathodes undergo nonsteady‐state structure transitions and chemical changes during high charge rest periods. The findings show that intermittent resting intensifies interfacial cracking within secondary particles due to coupled structure transitions and interfacial reactions, degrading lithium transport kinetics and creating lithium concentration gradients at multiple scales. Prolonged high anisotropy from delayed delithiation in the central region of primary particles, combined with surface‐related multiple heterogeneous pinning effects, induces further intracrystalline damage. This damage is repeatedly reset and activated during intermittent resting, worsening mechanical degradation. These insights into the degradation pathways of Ni‐rich cathodes provide a foundation for designing more durable materials and battery architectures to enhance the performance and longevity of lithium‐ion batteries in practical applications. TI - The Nonsteady‐State Structural and Chemical Reconstruction of Ni‐Rich Cathodes During the Intermittent Resting after Charging JF - Advanced Energy Materials DO - 10.1002/aenm.202405907 DA - 2025-04-03 UR - https://www.deepdyve.com/lp/wiley/the-nonsteady-state-structural-and-chemical-reconstruction-of-ni-rich-h0W4jZAd0W VL - Early View IS - DP - DeepDyve ER -