Tao Cheng, Zhong-Ting Liu, Jie Qu, Chao-Fu Meng, Ling-Jun He, Lang Li, Xuan-Li Yang, Yu-Jie Cao, Kai Han, Yi-Zhou Zhang, Wen-Yong Lai
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引用次数: 0
摘要
导电聚合物水凝胶具有独特的电气、电化学和机械特性,使其成为用于尖端可穿戴电子设备的可拉伸大容量储能装置的极具竞争力的电极材料。然而,要在导电聚合物水凝胶中同时实现大机械拉伸性、高导电性和优异的电化学性能,仍然极具挑战性,因为为提高拉伸性而引入软绝缘网络不可避免地会破坏刚性导电域的连通性,降低导电性和电化学活性。本研究提出了一种独特的封闭自组装和多重交联策略,以开发一种具有双相互穿交联网络的新型有机-无机杂化导电水凝胶。这种水凝胶同时具有高导电率(2000 S m-1)、大伸展性(200%)和高电化学活性,性能优于现有的导电水凝胶。我们深入研究了这种无与伦比的综合性能的内在机理。以水凝胶为基础制备的弹性全水凝胶超级电容器显示出高比电容(212.5 mF cm-2)、出色的能量密度(18.89 µWh cm-2)和大变形性。此外,基于超级电容器还构建了柔性自供电发光集成系统,无需额外电源即可随时随地自发发光。这项工作为开发用于可穿戴电子设备的高性能可拉伸电极材料和储能器件提供了新的见解和可行的途径。
High-Performance Organic-Inorganic Hybrid Conductive Hydrogels for Stretchable Elastic All-Hydrogel Supercapacitors and Flexible Self-Powered Integrated Systems.
Conductive polymer hydrogels exhibit unique electrical, electrochemical, and mechanical properties, making them highly competitive electrode materials for stretchable high-capacity energy storage devices for cutting-edge wearable electronics. However, it remains extremely challenging to simultaneously achieve large mechanical stretchability, high electrical conductivity, and excellent electrochemical properties in conductive polymer hydrogels because introducing soft insulating networks for improving stretchability inevitably deteriorates the connectivity of rigid conductive domain and decreases the conductivity and electrochemical activity. This work proposes a distinct confinement self-assembly and multiple crosslinking strategy to develop a new type of organic-inorganic hybrid conductive hydrogels with biphase interpenetrating cross-linked networks. The hydrogels simultaneously exhibit high conductivity (2000 S m-1), large stretchability (200%), and high electrochemical activity, outperforming existing conductive hydrogels. The inherent mechanisms for the unparalleled comprehensive performances are thoroughly investigated. Elastic all-hydrogel supercapacitors are prepared based on the hydrogels, showing high specific capacitance (212.5 mF cm-2), excellent energy density (18.89 µWh cm-2), and large deformability. Moreover, flexible self-powered luminescent integrated systems are constructed based on the supercapacitors, which can spontaneously shine anytime and anywhere without extra power. This work provides new insights and feasible avenues for developing high-performance stretchable electrode materials and energy storage devices for wearable electronics.
期刊介绍:
Advanced Science is a prestigious open access journal that focuses on interdisciplinary research in materials science, physics, chemistry, medical and life sciences, and engineering. The journal aims to promote cutting-edge research by employing a rigorous and impartial review process. It is committed to presenting research articles with the highest quality production standards, ensuring maximum accessibility of top scientific findings. With its vibrant and innovative publication platform, Advanced Science seeks to revolutionize the dissemination and organization of scientific knowledge.