Effect of fluoroethylene carbonate on the transport property of electrolytes towards Ni-rich Li-ion batteries with high safety

Salatan Duangdangchote; Nutthaphon Phattharasupakun; Praeploy Chomkhuntod; Poramane Chiochan; Sangchai Sarawutanukul; Chanikarn Tomon; Nattanon Joraleechanchai; Montree Sawangphruk

doi:10.1039/d1cc02120f

Effect of fluoroethylene carbonate on the transport property of electrolytes towards Ni-rich Li-ion batteries with high safety

Chem Commun (Camb). 2021 Jul 14;57(55):6732-6735. doi: 10.1039/d1cc02120f. Epub 2021 Jun 10.

Authors

Salatan Duangdangchote¹, Nutthaphon Phattharasupakun¹, Praeploy Chomkhuntod¹, Poramane Chiochan¹, Sangchai Sarawutanukul¹, Chanikarn Tomon¹, Nattanon Joraleechanchai¹, Montree Sawangphruk¹

Affiliation

¹ Centre of Excellence for Energy Storage Technology (CEST), Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand. montree.s@vistec.ac.th.

PMID: 34109336
DOI: 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.