| 초록 |
In recently years, Fire and explosion accidents in electric vehicles and lithium-ion batteries have increased. This is because it uses a flammable organic liquid electrolyte, which is unsafe for vehicle applications when battery size is increased. To solve this problem, The use of a solid electrolyte instead of a liquid electrolyte in the battery has been suggested as a way. The safety problem of battery is mainly contributed by thermal runaway caused fire and explosion. Thermal conductivity is considered one of the most important parameters that determine the safety of batteries. Low thermal stability can cause adverse reactions and thermal runaway inside the material. Hence, various kinds of solid electrolytes and thermal conductivity have been investigated to date. In this study, Among various solid electrolytes, A salt-like hydrides (LiH, LiBH4, LiAlH4) was selected as the solid electrolyte due to it has high conductivity and excellent compatibility with lithium electrodes. Thermal conductivity was analyzed by Laser Flash method to analyze the thermal stability of salt-like hydrides. Thermal runaway and stability were examined. Plus, we examined whether salt-like hydrides are suitable as solid electrolytes. |
