Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6613578 | Electrochimica Acta | 2014 | 8 Pages |
Abstract
Three-dimensional (3D) kenaf stem-derived porous carbon (PC) is considered to be a promising low-cost supporting material for application in energy storage devices. In this report, a simple and industry-scalable approach to prepare the hybrid (MnO2/3D-PC) of nanostructured MnO2 and 3D-PC has been developed. Such porous structures of the 3D-PC not only provided a conductive network to enhance the charge transport and mass transfer in the electrochemical process but also achieved a large MnO2 mass loading capacity of 11.5Â mg/cm2, which resulted in a high areal capacitance of 2.77 F/cm2 at a scan rate of 1Â mV/s. A specific capacitance of 416 F/g was obtained based on the mass loading of 2.52Â mg/cm2 at scan rate of 1Â mV/s. Furthermore, the symmetrical supercapacitor based on the MnO2/3D-PC exhibited outstanding cycle performance with only 14% degradation after 1000 cycles under a large specific current density of 16Â mA/cm2. This research demonstrated that the 3D-PC was a good potential supporting material in energy conversion and storage devices.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Li Wang, Yaolin Zheng, Shuiliang Chen, Yihan Ye, Fugang Xu, Hongliang Tan, Zhuang Li, Haoqing Hou, Yonghai Song,