Early Lithium Plating Behavior in Confined Nanospace of 3D Lithiophilic Carbon Matrix for Stable Solid‐State Lithium Metal Batteries. Issue 43 (5th September 2019)

• Record Type: Journal Article
• Authors: Huang, Shaobo; Yang, Hao; Hu, Jiangkui; Liu, Yongchang; Wang, Kexin; Peng, Hailin; Zhang, Hao; Fan, Li‐Zhen
• Is Part Of: Small. Volume 15:Issue 43(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-09-05
• Subjects: confined nanospace -- Li metal anodes -- lithium deposition behavior -- solid‐state batteries; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201904216
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: Considerable efforts are devoted to relieve the critical lithium dendritic and volume change problems in the lithium metal anode. Constructing uniform Li + distribution and lithium "host" are shown to be the most promising strategies to drive practical lithium metal anode development. Herein, a uniform Li nucleation/growth behavior in a confined nanospace is verified by constructing vertical graphene on a 3D commercial copper mesh. The difference of solid‐electrolyte interphase (SEI) composition and lithium growth behavior in the confined nanospace is further demonstrated by in‐depth X‐ray photoelectron spectrometer (XPS) and line‐scan energy dispersive X‐ray spectroscopic (EDS) methods. As a result, a high Columbic efficiency of 97% beyond 250 cycles at a current density of 2 mA cm −2 and a prolonged lifespan of symmetrical cell (500 cycles at 5 mA cm −2 ) can be easily achieved. More meaningfully, the solid‐state lithium metal cell paired with the composite lithium anode and LiNi0.5 Co0.2 Mn0.3 O2 (NCM) as the cathode also demonstrate reduced polarization and extended cycle. The present confined nanospace–derived hybrid anode can further promote the development of future all solid‐state lithium metal batteries. Abstract : A significant early homogeneous lithium plating behavior in the confined nanospace of a 3D carbon matrix is explored. The 3D composite lithium anode presents improved Coulombic efficiency with no dendritic growth. The 3D composite lithium anode is successfully applied in solid‐state lithium metal batteries.