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Shape-memory and self-healing polyurethane-based solid polymer electrolytes constructed from polycaprolactone segment and disulfide metathesis
Energy Storage Materials ( IF 18.9 ) Pub Date : 2022-06-18 , DOI: 10.1016/j.ensm.2022.06.021
Yingjie Huang , Zhen Shi , Hongli Wang , Jirong Wang , Zhigang Xue

The extreme deformation and external damage of electrolyte materials during the working period limit its further development in flexible wearable electronics. Thus, the polyurethane-based solid polymer electrolyte (PUSPE) with a shape-memory performance is designed and prepared, possibly controlling the temporary shape and restoring the original shape with the help of the polycaprolactone (PCL) soft segments. Abundant disulfide metathesis and hydrogen bonding in PUSPE also show readily healable ability with heating stimuli. The assembled Li/LiFePO4 (LFP) battery based on PUSPE presents a specific discharge capacity about 160 mAh g  1 at the charge/discharge rate of 0.1 C, and the capacity retention rate is close to 92.4% after 100 cycles. The as-prepared flexible battery demonstrates an inherent shape-memory performance, which provides the possibility to match with complicated flexible devices.



中文翻译:

由聚己内酯链段和二硫化物复分解构成的形状记忆和自修复聚氨酯基固体聚合物电解质

电解质材料在工作期间的极端变形和外部损伤限制了其在柔性可穿戴电子产品中的进一步发展。因此,设计和制备了具有形状记忆性能的聚氨酯基固体聚合物电解质(PUSPE),可能在聚己内酯(PCL)软链段的帮助下控制临时形状并恢复原始形状。PUSPE 中丰富的二硫键复分解和氢键在加热刺激下也显示出易于愈合的能力。基于 PUSPE组装的 Li/LiFePO 4 (LFP) 电池的比放电容量约为 160 mAh g  -  1在0.1C的充放电倍率下,100次循环后容量保持率接近92.4%。所制备的柔性电池具有固有的形状记忆性能,为与复杂的柔性设备匹配提供了可能性。

更新日期:2022-06-21
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