| 초록 |
Conventional lithium-ion batteries that use flammable liquid electrolytes have raised many concerns due to safety issues and low energy density. An all-solid-state battery using a solid polymer electrolyte (SPE) can not only solve the safety problem, but also achieve high energy density. However, the organic component of the solid polymer electrolyte is still flammable, and the polymer/ceramic composite material is also generally flammable, so the safety issue cannot be completely avoided. Here, we show that the addition of a simple flame retardant is effective in reducing the flammability of solid polymer electrolytes. SPE was prepared by the addition of flame retardant dimethyl methylphosphonate (DMMP) to PEO and exhibited improved cycle stability and ionic conductivity. |
