• 文献标题:   Sodiophilic silver nanoparticles anchoring on vertical graphene modified carbon cloth for longevous sodium metal anodes
  • 文献类型:   Article
  • 作  者:   TIAN BF, HUANG ZX, YANG HY, WANG H, XU TT, KONG DZ, GAO CJ, ZANG JH, LI XJ, WANG Y
  • 作者关键词:   sodium metal anode, ag, vgcc nanostructure, sodiophilic, dendrite free, insitu optical microscopy investigation
  • 出版物名称:   IONICS
  • ISSN:   0947-7047 EI 1862-0760
  • 通讯作者地址:  
  • 被引频次:   3
  • DOI:   10.1007/s11581-022-04695-0 EA JUL 2022
  • 出版年:   2022

▎ 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.