@article{ref1,
title="Fire-preventing LiPF6 and ethylene carbonate-based organic liquid electrolyte system for safer and outperforming lithium-ion batteries",
journal="ACS applied materials and interfaces",
year="2020",
author="Chung, Gyeong Jun and Han, Jisoo and Song, Seung-Wan",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="Battery safety is an ever-increasing significance to guarantee consumer's safety. Reducing or preventing the risk of battery fire and explosion is a must for battery manufacturers. Major reason for the occurrence of fire in commercial lithium-ion batteries is the flammability of conventional organic liquid electrolyte, which is typically composed of 1 M LiPF6 salt and ethylene carbonate (EC)-based organic solvents. Herein, we report the designed 1 M LiPF6 and EC-based nonflammable electrolyte including methyl(2,2,2-trifluoroethyl)carbonate, which breaks the conventional perception that EC-based liquid electrolyte is always flammable. The designed electrolyte also provides high anodic stability beyond the conventional charge cut-off voltage of 4.2 V. A graphite∥LiNi0.6Co0.2Mn0.2O2 lithium-ion full cell with our designed EC-based nonflammable electrolyte with a small fraction of vinylene carbonate additive under an aggressive condition of 4.5 V charge cut-off voltage, 0.5C rate, and 45 °C exhibits increased capacity, reduced interfacial resistance, and improved performance and rate capability. A basic understanding of how a high-voltage cathode-electrolyte interface and anode-electrolyte interface are stabilized and how failure modes are mitigated by fire-preventing electrolyte is discussed.<p /> <p>Language: en</p>",
language="en",
issn="1944-8244",
doi="10.1021/acsami.0c12702",
url="http://dx.doi.org/10.1021/acsami.0c12702"
}