Anchoring Active Li Metal in Oriented Channel by In Situ Formed Nucleation Sites Enabling Durable Lithium‐Metal Batteries

• DOI: 10.1002/adma.202313034
• Publication Date: 2024-03-13T20:39:43Z
• Authors: Huai‐Yu Peng; Yan‐Song Xu; Xu‐Yang Wei; Yun‐Nuo Li; Xiongyi Liang; Jun Wang; Shuang‐Jie Tan; Yu‐Guo Guo; Fei‐Fei Cao
• Keywords: Lithium metal; Dendrite (mathematics); Interphase

Abstract Lithium metal is the ultimate anode material for pursuing increased energy density of rechargeable batteries. However, fatal dendrites growth and huge volume change seriously hinder practical application lithium batteries (LMBs). In this work, a host that preinstalled CoSe nanoparticles on vertical carbon vascular tissues (VCVT/CoSe) designed fabricated to resolve these issues, which provides sufficient Li plating space with robust framework, enabling dendrite‐free deposition. Their inherent N sites coupled in situ formed lithiophilic Co loaded at interface VCVT not only anchor initial nucleation seeds but also accelerate + transport kinetics. Meanwhile, 2 Se originated from conversion contributes constructing stable solid‐electrolyte interphase high ionic conductivity. This optimized Li/VCVT/CoSe composite exhibits prominent long‐term cycling stability over 3000 h areal capacity 10 mAh cm −2 . When paired commercial nickel‐rich LiNi 0.83 0.12 Mn 0.05 O cathode, full‐cell presents substantially enhanced performance 81.7% retention after 300 cycles 0.2 C. Thus, work reveals critical role guiding deposition behavior maintain homogeneous morphology pave way LMBs.