Wang QS, Sun JH, Chen CH (2009b) Improved thermal stability of graphite electrodes in lithium-ion batteries using 4-isopropyl phenyl diphenyl phosphate as an additive. Journal of Applied Electrochemistry 39(7), 1105-1110. [In English]

Web link: http://dx.doi.org/10.1007/s10800-008-9765-2

Keywords:

Lithium-ion battery; Graphite; Thermal behavior; C80 micro-calorimeter; 4-Isopropyl phenyl diphenyl phosphate; anode interface; likely advances; electrolytes; cells; calorimeter; behavior

Abstract: To enhance the thermal stability of graphite electrodes for lithium-ion batteries, 4-isopropyl phenyl diphenyl phosphate (IPPP) was investigated as an additive in the electrolyte of 1.0 M LiPF(6) in ethylene carbonate and diethyl carbonate (1: 1 in weight). The electrochemical performance of Li/IPPP-electrolyte/C half cells was evaluated. The thermal behavior of Li(x)C(6) and Li(x)C(6)-IPPP-electrolytes were examined using a C80 micro-calorimeter. Electrolytes with 5 and 10% IPPP improve the thermal stability of the graphite electrode in the tests. The electrochemical performance of Li/IPPP-electrolyte/C cells is not degraded by the addition of this amount of IPPP to the electrolyte.