Electrochemical performance of tris(2-chloroethyl) phosphate as a flame-retarding additive for lithium-ion batteries

• Published in: Metals and materials international Vol. 16; no. 4; pp. 587 - 594
• Main Authors: Shim, Eun-Gi, Park, In-Jun, Nam, Tae-Heum, Kim, Jung-Gu, Kim, Hyun-Soo, Moon, Seong-In
• Format: Journal Article
• Language: English
• Published: Springer The Korean Institute of Metals and Materials 01.08.2010; Springer Nature B.V; 대한금속·재료학회
• Subjects: Additives; Characterization and Evaluation of Materials; Chemistry and Materials Science; Cycles; Discharge; Electrochemical cells; Electrolytes; Electrolytic cells; Engineering Thermodynamics; Heat and Mass Transfer; Lithium batteries; Lithium-ion batteries; Machines; Magnetic Materials; Magnetism; Manufacturing; Materials Science; Metallic Materials; Microorganisms; Processes; Solid Mechanics; 재료공학; energy storage materials; interfaces; electrochemistry; scanning electron microscopy (SEM); thermal analysis
• ISSN: 1598-9623; 2005-4149
• DOI: 10.1007/s12540-010-0811-3

We studied tris(2-chloroethyl) phosphate (TCEP) as a potential flame-retarding additive and its effect on the electrochemical cell performance of lithium-ion battery electrolytes. The electrochemical cell performance of additive-containing electrolytes in combination with a cell comprised of a LiCoO 2 cathode and a mesocarbon microbeads anode was tested in coin cells. The cyclic voltammetry results show that the oxidation potential of TCEP-containing electrolyte is about 5.1 V (vs. Li/Li + ). A cell with TCEP has a better electrochemical cell performance than a cell without TCEP in an initial charge and discharge test. In a cycling test, a cell containing a TCEP-containing electrolyte has a greater discharge capacity and better capacity retention than a TCEP-free electrolyte after cycling. The results confirm the promising potential of TCEP as a flame-retarding additive and as a means of improving the electrochemical cell performance of lithium-ion batteries.