阴极
掺杂剂
兴奋剂
材料科学
价(化学)
离子
化学物理
格子(音乐)
化学工程
纳米技术
光电子学
化学
物理化学
有机化学
工程类
物理
声学
作者
Xiaoqiao Li,Fanxiu Feng,Taiping Hu,Yong Wang,Chenji Hu,Jingyu Chen,Yilin Chen,Chun Cheng,Han Wang,Qinfeng Zheng,Yixiao Zhang,Yu‐Shi He,Shenzhen Xu,Wei Zhang,Liwei Chen,Zi‐Feng Ma,Linsen Li
标识
DOI:10.1002/anie.202512729
摘要
Abstract High‐energy lithium‐ion batteries necessitate stable Ni‐rich layered cathodes, yet critical challenges such as lattice distortion and surface structure collapse remain unresolved. While conventional high‐valence doping greatly alleviates surface degradations, it is ineffective in stabilizing bulk lattice due to dopant segregation. Here, we propose a slightly Li‐rich (SLR) lattice design by partially substituting transition‐metal (TM) ions with Li + ions in TM layers, reducing electrostatic repulsion against high‐valence dopants. Integrated theory‐experiment analyses reveal uniform bulk doping of Mo 6+ in SLR cathodes, realized via a self‐medicating and scalable molten‐salt synthesis route. An optimized high‐energy cathode (880 Wh kg −1 cathode ) achieves 89% retention after 1000 cycles in Ah‐scale pouch cells, sustains 10 C ultrafast charging/discharging for 300 cycles (3.8 min to 80% state‐of‐charge), and operates stably in all‐solid‐state batteries. Multimodal characterizations link uniform Mo 6+ doping to suppressed lattice strain and structural collapse. This work establishes a new paradigm for bulk lattice engineering of advanced battery cathodes.
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