Novel solid polymer electrolytes based on succinonitrile (SN) plastic crystal electrolyte (SN-PCE) and polymerized ionic liquid (PIL) has been successfully synthesized via an in-situ method. The fabricated electrolyte (PIL-SN-PCE) is uniformly inlayed into the supporting matrix of polyimide, which effectively ameliorates the mechanical properties of the electrolyte. PIL can effectively enhance the thermal stability of electrolytes up to 300 °C and mitigate the parasitic reactions between the electrolytes and the electrodes. PIL-SN-PCE exhibits a remarkable oxidation ability up to 5.4 V vs Li/Li⁺ and a high room temperature ionic conductivity of 6.54 × 10⁻⁴ S cm⁻¹. Furthermore, in-situ formed interface in PIL-SN-PCE guarantee an excellent compatibility with different electrodes, which can effectively improve the cycle stability and rate performances of both half-cells and full cells. Thus, PIL-SN-PCE is considered as a promising electrolyte for high energy density lithium-ion batteries.

通过原位法成功合成了基于丁二腈（SN）塑性晶体电解质（SN-PCE）和聚合离子液体（PIL）的新型固体聚合物电解质。将制成的电解质（PIL-SN-PCE）均匀地嵌入到聚酰亚胺的支撑基质中，可以有效改善电解质的机械性能。PIL可以有效地增强电解质在高达300°C的热稳定性，并减轻电解质与电极之间的寄生反应。PIL-SN-PCE相对于Li / Li ⁺表现出高达5.4 V的出色氧化能力和6.54×10 ^-4  S cm ^-1的高室温离子电导率。此外，PIL-SN-PCE中原位形成的界面可确保与不同电极的出色兼容性，从而可有效提高半电池和全电池的循环稳定性和速率性能。因此，PIL-SN-PCE被认为是用于高能量密度锂离子电池的有前途的电解质。