超级电容器
材料科学
分离器(采油)
静电纺丝
电极
纳米棒
纳米技术
纳米纤维
储能
电解质
功率密度
复合数
电化学
光电子学
复合材料
聚合物
功率(物理)
化学
物理化学
物理
热力学
量子力学
作者
Yunbing Yan,Jing Yan,Xin Gong,Xiaowan Tang,Xueya Xu,Ting Meng,Fan Bu,Dongming Cai,Zhenyuan Zhang,Guangdi Nie,Haifeng Zhang
标识
DOI:10.1016/j.cej.2021.133580
摘要
It is very necessary to design electrodes with satisfactory electrochemical performance and robust mechanical properties for flexible energy storage devices. Herein, a self-supporting electrode with Negative Poisson's Ratio (NPR) structure was fabricated by combining electrospinning and laser direct writing technology, which overcame the limitation that the traditional carbon-based materials cannot be stretched and avoided the integration problem of rigid electrodes and soft substrates in the conventional stretchable devices. Furthermore, a quasi-solid-state asymmetric micro-supercapacitor with NPR structure was assembled by an as-spun separator coated with gel electrolyte and two composite electrodes composed of carbon nanofibers and nanoarrays ([email protected]2O3 nanorods and [email protected]2 nanosheets). The apparatus not only reached an extended voltage window of 2 V, but also achieved an area energy density of 26 μWh·cm−2 at a power density of 0.55 mW·cm−2, which was superior to other wearable micro-supercapacitors.
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