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Sodiophilic silver nanoparticles anchoring on vertical graphene modified carbon cloth for longevous sodium metal anodes

Sodiophilic silver nanoparticles anchoring on vertical graphene modified carbon cloth for... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

Sodiophilic silver nanoparticles anchoring on vertical graphene modified carbon cloth for longevous sodium metal anodes

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References (75)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022
ISSN
0947-7047
eISSN
1862-0760
DOI
10.1007/s11581-022-04695-0
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

IonicsSpringer Journals

Published: Oct 1, 2022

Keywords: Sodium metal anodes; Ag/VG-CC nanostructure; Sodiophilic; Dendrite free; In-situ optical microscopy investigation

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