Rationally Designed Self-Healing Hydrogel Electrolyte toward a Smart and Sustainable Supercapacitor,ACS Applied Materials & Interfaces

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Rationally Designed Self-Healing Hydrogel Electrolyte toward a Smart and Sustainable Supercapacitor
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-08-15 00:00:00 , DOI: 10.1021/acsami.7b07836
Jingchen Wang ₁ , Fatang Liu ₁ , Feng Tao ₁ , Qinmin Pan ₁

Affiliation

Excellent self-healability and renewability are crucial for the development of wearable/flexible energy-storage devices aiming for advanced personalized electronics. However, realizing low-temperature self-healing and harmless regeneration remains a big challenge for existing wearable/flexible energy-storage devices, which is fundamentally limited by conventional polymeric electrolytes that are intrinsically neither cryo-healable nor renewable. Here, we rationally design a multifunctional polymer electrolyte on the basis of the copolymer of vinylimidazole and hydroxypropyl acrylate, which exhibits all features solving the above-mentioned limitations. A supercapacitor comprising the electrolyte autonomously restores its electrochemical behaviors at temperatures ranging from 25 to −15 °C after multiple mechanical breakings. Interestingly, it is even able to regenerate for 5 cycles through a simple wetting process in the case of malfunction, while maintaining its capacitive properties and excellent self-healability. Our investigation provides a novel insight into designing smart and sustainable energy-storage devices that might be applied to intelligent apparel, electronic skin or flexible robot, and so on.

中文翻译：

合理设计的自愈水凝胶电解质，朝着智能，可持续的超级电容器发展

出色的自我修复性和可更新性对于开发针对高级个性化电子产品的可穿戴/灵活能量存储设备至关重要。然而，对于现有的可穿戴/柔性储能装置而言，实现低温自愈和无害再生仍然是一个巨大的挑战，这从根本上受到本质上既不可冷冻也不可再生的常规聚合物电解质的限制。在此，我们基于乙烯基咪唑和丙烯酸羟丙酯的共聚物合理地设计了一种多功能聚合物电解质，该电解质具有解决上述局限性的所有特征。在多次机械断裂后，包含电解质的超级电容器可在25至-15°C的温度范围内自动恢复其电化学行为。有趣的是，在出现故障的情况下，它甚至能够通过简单的润湿过程再生5个周期，同时保持其电容特性和出色的自愈性。我们的调查为设计可应用于智能服装，电子皮肤或柔性机器人等的智能且可持续的储能设备提供了新颖的见解。

更新日期：2017-08-15

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