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Composite sodium metal anodes for practical application

Abstract

With its high theoretical capacity (1165 mAh g-1), low reduction potential (-2.71 V vs. standard hydrogen electrode) and abundance in earth crust, Na anode exhibits a great potential in grid-scale energy storage system and extensive application of electric vehicles. Nevertheless, its practical employment is still hindered by its dendrite-related hazards, together with sever side reactions and infinite volume change during plating/stripping process. Among various strategies, constructing a composite sodium anode stands out in virtue of its unique role in mitigating volume fluctuation, lessening the current density and providing numerous nucleation sites for homogenous Na+ plating. Herein, current progresses for making composite sodium metal anode are reviewed in terms of carbon-based scaffolds, carbon-based interlayers, carbon-based current collectors, metal based scaffolds and mixed ion/electron-conducting scaffolds for practical application. Finally, perspective for its future development and important factors concerning its commercialization for high-energy-density sodium metal batteries are provided.

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Article information


Submitted
02 Mar 2020
Accepted
07 May 2020
First published
12 May 2020

J. Mater. Chem. A, 2020, Accepted Manuscript
Article type
Review Article

Composite sodium metal anodes for practical application

J. Cui, A. Wang, G. Li, D. Wang, D. Shu, A. Dong, G. Zhu, J. Luo and B. Sun, J. Mater. Chem. A, 2020, Accepted Manuscript , DOI: 10.1039/D0TA02469D

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