Design of a Hierarchical Ternary Hybrid for a Fiber-Shaped Asymmetric Supercapacitor with High Volumetric Energy Density
Design of a Hierarchical Ternary Hybrid for a Fiber-Shaped Asymmetric Supercapacitor with High Volumetric Energy Density
复制标题
高体积能量密度纤维状不对称超级电容器的分层三元混合材料设计
DOI：
10.1021/acs.jpcc.6b02794
复制
发表时间：
2016-05-12
影响因子：
3.7
通讯作者：
Peng, Huisheng
中科院分区：
文献类型：
--
作者：
Cheng, Xunliang;Zhang, Jing;Peng, Huisheng
通过设计不对称结构并集成电极的多个功能组件，创建了一种具有高体积能量密度的新型纤维状超级电容器。更具体地，通过在导电聚合物涂覆的碳纳米管纤维上生长MnO2纳米片，制备三元混合纤维作为正极；制作有序微孔碳/碳纳米管杂化纤维作为负极；将混合正负极纤维组装成纤维状不对称超级电容器。与基于水性凝胶电解质的传统同类产品的 0.8-1.0 V 相比，它具有 1.8 V 的高工作电压；特别是，它的能量密度高达11.3 mWh/cm(3)，与薄膜锂离子电池相当。它还具有显着的循环稳定性和良好的倍率性能。由于独特的纤维形状，它可以机织或针织成柔性强力纺织品。
A novel fiber-shaped supercapacitor is created with high volumetric energy density by designing an asymmetric configuration and integrating multiple functional components for electrodes. More specifically, a ternary hybrid fiber is prepared as a positive electrode by growing MnO2 nanosheets onto a conducting polymer-coated carbon nanotube fiber; an ordered microporous carbon/carbon nanotube hybrid fiber is made as a negative electrode; and the hybrid positive and negative fibers are assembled into a fiber shaped asymmetric supercapacitor. It shows a high operating voltage of 1.8 V, compared with 0.8-1.0 V of their conventional counterparts based on aqueous gel electrolytes; in particular, it produces an energy density as high as 11.3 mWh/cm(3) which is on par with the thin-film lithium-ion batteries. It also exhibits remarkable cyclic stability and good rate performance. Due to the unique fiber shape, it can be woven or knitted into flexible power textiles.