In:
Angewandte Chemie, Wiley, Vol. 132, No. 16 ( 2020-04-16), p. 6658-6662
Abstract:
Sodium metal is an ideal anode material for metal rechargeable batteries, owing to its high theoretical capacity (1166 mAh g −1 ), low cost, and earth‐abundance. However, the dendritic growth upon Na plating, stemming from unstable solid electrolyte interphase (SEI) film, is a major and most notable problem. Here, a sodium benzenedithiolate (PhS 2 Na 2 )‐rich protection layer is synthesized in situ on sodium by a facile method that effectively prevents dendrite growth in the carbonate electrolyte, leading to stabilized sodium metal electrodeposition for 400 cycles (800 h) of repeated plating/stripping at a current density of 1 mA cm −2 . The organic salt, PhS 2 Na 2 , is found to be a critical component in the protection layer. This finding opens up a new and promising avenue, based on organic sodium slats, to stabilize sodium metals with a protection layer.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v132.16
DOI:
10.1002/ange.201916716
Language:
English
Publisher:
Wiley
Publication Date:
2020
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505872-7
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1479266-7
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