超级电容器
储能
自愈水凝胶
材料科学
纳米技术
数码产品
可穿戴技术
可穿戴计算机
电化学能量转换
电解质
导电体
复合材料
电极
计算机科学
电气工程
电化学
功率(物理)
嵌入式系统
工程类
物理
物理化学
量子力学
化学
高分子化学
作者
Wei Zhang,Pan Feng,Jian Chen,ZhengMing Sun,Boxin Zhao
标识
DOI:10.1016/j.progpolymsci.2018.09.001
摘要
To power wearable electronic devices, various flexible energy storage systems have been designed to work in consecutive bending, stretching and even twisting conditions. Supercapacitors and batteries have been considered to be the most promising energy/power sources for wearable electronics; however, they need to be electrochemically sustainable and mechanically robust. Electrically conductive hydrogels (ECHs), combining the electrical properties of conductive materials with the unique features of hydrogels, are ideal frameworks to design and construct flexible supercapacitors and batteries. ECHs are intrinsically flexible to sustain large mechanical deformation; they can hold a large amount of electrolyte solution in a 3D nanostructured conducting network, providing an extremely high surface area for the required electrochemical reactions. To date, nanostructured three-dimensional ECHs have exhibited high performance when applied as active electrode materials for supercapacitors and lithium-ion batteries. Future research may attempt to develop functional ECHs with controllable size, composition, morphology, and interface. This review summarizes the material design and synthetic approach of ECHs, demonstrating the advances of percolation theory in ECH materials, and subsequently presents their effective application in flexible energy storage systems and discusses the challenges and opportunities in this field.
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