Effect of fluoroethylene carbonate on the transport property of electrolytes towards Ni-rich Li-ion batteries with high safety
- 28 May 2021
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- Vol. 57 (55), 6732-6735
- https://doi.org/10.1039/d1cc02120f
Abstract
Transport phenomena and the solvation structure of lithium ions (Li+) and hexafluorophosphate anions (PF6 −) in electrolytes with different fluoroethylene carbonate (FEC) concentrations as well as the electrochemical performance and safety of Ni-rich Li-ion battery cells at the 18650 cylindrical cell level are investigated. We have found that the electrolyte with an optimized FEC concentration (25% v/v) can effectively enhance the transport property in terms of the Li+ transference number and contact ion pair (CIP) ratio leading to high performance and safety of practical 18650 cylindrical LIBs.Funding Information
- Thailand Research Fund (RSA6180031)
- Ministry of Energy
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