Activated carbon fibers with manganese dioxide coating for flexible fiber supercapacitors with high capacitive performance

作者：Li, Huifang; Liang, Jiachen; Li, Huan; Zheng, Xiaoyu; Tao, Ying^*; Huang, Zheng-Hong; Yang, Quan-Hong^*

来源：Journal of Energy Chemistry, 2019, 31(04): 95-100.

DOI：10.1016/j.jechem.2018.05.008

• Fiber supercapacitors
• Activated carbon fibers
• Mass loading
• Flexibility

Fiber supercapacitor (FSC) is a promising power source for wearable/stretchable electronics and high capacitive performance of FSCs is highly desirable for practice flexible applications. Here, we report a composite of manganese dioxide (MnO2) and activated carbon fibers (ACFs) with high MnO2 mass loading and microporous structure (abbreviated as MnO2@ACF), which is used as a fiber electrode to produce a FSC with a high capacitive performance and a good flexibility. The MnO2@ACF composite electrode in FSCs delivers an ultrahigh specific capacitance of 410 mF/cm(2) at 0.1 mA/cm(2), corresponding to a high energy density of 36 mu Wh/cm(2) and high power density of 726 mu W/cm(2). Such high capacitive performance and simple fabrication method indicates that the MnO2@ACF composite is a very promising electrode material for flexible fiber supercapacitors.

• 出版日期2019-4
• 单位清华大学; 司法部司法鉴定科学技术研究所; 天津大学