An Ionic Liquid Electrolyte Additive for High-Performance Lithium–Sulfur Batteries

Zeliang Guan, Ling Bai, Binyang Du · 2023

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Description

Zeliang Guan, Ling Bai, and Binyang Du add a pinch of ionic liquid to fix the short life of lithium-sulfur batteries. These batteries promise nearly ten times the charge of lithium-ion cells, yet they fade fast, above all at high currents. The additive, a salt called TDA-TFSI, went into a standard ether electrolyte at five percent.

Cells with the additive started strong and faded slowly: after three hundred cycles they still held 523 milliamp-hours per gram, losing only about 0.18 percent per cycle. At double the current, they beat additive-free cells by about thirteen percent after two hundred fifty cycles, and their efficiency held steadier. Study of the surfaces showed the additive grows a denser, more even protective film on the electrode. The authors present it as a simple route to high-performance lithium-sulfur cells.

Catalog record

CREATORZeliang Guan, Ling Bai, Binyang Du
YEAR2023
COLLECTIONPAPERS
FORMATTXT
FILE SIZE31 KB
VERSION1.0
LICENSECC BY 4.0
RIGHTSCC BY
SOURCEEurope PMC

Source: https://europepmc.org/articles/PMC10707666

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