Accelerating Lithium Deposition Kinetics Via Lithiophilic Ag-Decorated Graphitic Carbon Nitride Spheres for Stable Lithium Metal Anode
Hyojun Lim , Minsu Choi , Haeun Kang , Wonchang Choi
Energy & Environmental Materials ›› 2025, Vol. 8 ›› Issue (2) : e12830
Accelerating Lithium Deposition Kinetics Via Lithiophilic Ag-Decorated Graphitic Carbon Nitride Spheres for Stable Lithium Metal Anode
This study presents a novel Li metal host material with a unique hollow nano-spherical structure that incorporates Ag nano-seeds into a graphitic carbon nitride (g-C3N4) shell layer, referred to as g-C3N4@Ag hollow spheres. The g-C3N4@Ag spheres provide a managed internal site for Li metal encapsulation and promote stable Li plating. The g-C3N4 spheres are uniformly coated using polydopamine, which has an adhesive nature, to enhance lithium plating/stripping stability. The strategic presence of Ag nano-seeds eliminates the nucleation barrier, properly directing Li growth within the hollow spheres. This design facilitates highly reversible and consistent lithium deposition, offering a promising direction for the production of high-performance lithium metal anodes. These well-designed g-C3N4@Ag hollow spheres ensure stable Li plating/stripping kinetics over more than 500 cycles with a high coulombic efficiency of over 97%. Furthermore, a full cell made using LiNi0.90Co0.07Mn0.03O2 and Li-g-C3N4@Ag host electrodes demonstrated highly competitive performance over 200 cycles, providing a guide for the implementation of this technology in advanced lithium metal batteries.
hollow sphere / lithiophilic site / lithium deposition kinetics / lithium metal anode / lithium-ion conductor
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2024 The Author(s). Energy & Environmental Materials published by John Wiley & Sons Australia, Ltd on behalf of Zhengzhou University.
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