▎ 摘 要
Sodium metal anodes (SMAs) have been widely investigated due to the high theoretical capacity and low redox potential. However, the uncontrollable dendrite formation of SMAs seriously hinders further development. Herein, a three-dimensional (3D) nanostructure composed of sodiophilic silver nanoparticles (Ag NPs) anchored onto the vertical graphene (VG) decorated carbon cloth (CC) (Ag/VG-CC) is designed to regulate the sodium (Na) deposition behavior. The homogeneous Na deposition behavior enabled dendrite-free morphology is demonstrated by ex-situ scanning electron microscopy and in-situ optical microscopy characterizations owing to the 3D structure and sodiophilicity of Ag NPs. As a result, the Ag/VG-CC electrode maintains a high Coulombic efficiency of higher than 99.86% and high reversibility of Na plating/stripping processes over 2000 cycles at 3 mA cm(-2) with 1 mAh cm(-2). Furthermore, when the Na@Ag/VG-CC anode coupled with Na3V2(PO4)(3)@carbon cathode, the full cell presents a high reversible specific capacity of 98.6 mAh g(-1) after 300 cycles.