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Issue 22, 2019
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Trimethylsilyl azide (C3H9N3Si): a highly efficient additive for tailoring fluoroethylene carbonate (FEC) based electrolytes for Li-metal batteries

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Abstract

In this study, trimethylsilyl azide (C3H9N3Si, hereafter denoted as TSA) is used as an efficient electrolyte additive in Li-metal batteries. Along with a LiF-rich compound, the addition of 0.1 M TSA to fluoroethylene carbonate (FEC)-based electrolytes not only induces the formation of a conductive solid-electrolyte interphase layer on the Li-metal surface but also allows the formation of a dense Li-deposit morphology; hence, it greatly enhances the Li plating–stripping reaction kinetics. Upon using the 0.1 M TSA additive, a practical Li/full concentration gradient Li[Ni0.73Co0.10Mn0.15Al0.02]O2 (FCG73) battery exhibits outstanding long-term cycling stability over 300 cycles and fast charge–discharge capability at a practical level.

Graphical abstract: Trimethylsilyl azide (C3H9N3Si): a highly efficient additive for tailoring fluoroethylene carbonate (FEC) based electrolytes for Li-metal batteries

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Supplementary files

Article information


Submitted
09 Apr 2019
Accepted
12 May 2019
First published
13 May 2019

J. Mater. Chem. A, 2019,7, 13441-13448
Article type
Communication

Trimethylsilyl azide (C3H9N3Si): a highly efficient additive for tailoring fluoroethylene carbonate (FEC) based electrolytes for Li-metal batteries

S. Park, J. Hwang and Y. Sun, J. Mater. Chem. A, 2019, 7, 13441
DOI: 10.1039/C9TA03713F

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