Abstract
Ethyl Methyl Carbonate (EMC) which has been used in Li Ion Battery (LIB) is known as a flammable material. As a basis for fire safety improvement of LIB, the effect of Organophosphorus Compound (OPC) addition to EMC has been determined. The result showed that extinction limit increased with increase in OPC addition, while the effect of OPC addition tends to saturate with increase in the amount of OPC addition. It was also found that addition of OPC caused increase in flame temperature and fuel consumption rate (FCR). However, when O2 concentration comes close to the extinction limit, the rate of temperature decrease to the O2 concentration decrease is large and resulting decrease in FCR with decrease in O2 concentration becomes larger with OPC than the case without OPC. This trend causes the higher limiting oxygen concentration with addition of OPC to EMC.
