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Wang QS, Sun JH, Chen CH (2006a) Journal of Power Sources 162(2), 1363-1366.
Date: 2011-08-17   Author: SKLFS   Source: WOS
 

Wang QS, Sun JH, Chen CH (2006a) Enhancing the thermal stability of LiCoO2 electrode by 4-isopropyl phenyl diphenyl phosphate in lithium ion batteries. Journal of Power Sources 162(2), 1363-1366. [In English]

Web link:http://dx.doi.org/10.1016/j.jpowsour.2006.08.027

Keywords:

lithium ion battery; LiCoO2; thermal stability; C80 microcalorimeter; fluorinated alkyl phosphates; non-flammable electrolyte; nonflammable; electrolytes; flame retardants; cosolvent; additives; behavior; lipf6;

Abstract: To enhance the thermal stability of LiCoO2 in lithium ion batteries, 4-isopropyl phenyl diphenyl phosphate (IPPP) was investigated as an additive in 1.0 M LiPF6/EC + DEC (1:1 wt.%) electrolyte. The thermodynamics and kinetics parameters of the single LiCoO2 and LixCoO2-IPPP-electrolyte are detected and calculated based on the C80 microcalorimeter data. The results indicated that IPPP can enhance the thermal stability of LiCoO2 electrode in lithium ion battery more or less corresponding to the IPPP content in electrolyte. Furthermore, the electrochemical performances of LiCoO2/IPPP-electrolyte/Li cells become slightly worse after using IPPP additive in the electrolyte. This alleviated trade-off between thermal stability and cell performance provides a possibility to formulate an electrolyte containing 5-10% of IPPP and enhance the LiCoO2 electrode thermal stability with minimum sacrifice in performance. (c) 2006 Elsevier B.V. All rights reserved.

 
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Relevant link
Wang QS, Sun JH, Chen CH (2006b) Rare Metals 25, 94-99.
Wang QS, Sun JH, Yao XL, Chen CH (2006d) Journal of Solution Chemistry 35(2), 179-189.
Wang QS, Sun JH, Yao XL, Chen CH (2005c) Thermochimica Acta 437(1-2), 12-16.
Recent progresses on lithium ion battery thermal runaway and high safe battery electrolyte
Wang QS, Sun JH, Chu GQ, Yao XL, Chen CH (2007b) Journal of Thermal Analysis and Calorimetry 89(1), 245-250.
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