Ordinary filter paper-derived hierarchical pore structure carbon materials for supercapacitor. (March 2021)

• Record Type: Journal Article
• Authors: Chao, Yuanzhi; Chen, Songbo; Xiao, Yongcheng; Hu, Xinjun; Lu, Yue; Chen, Huqiang; Xin, Shixuan; Bai, Yongxiao
• Is Part Of: Journal of energy storage. Volume 35(2021)
• Publication Date: 2021-03
• Subjects: Filter paper -- Porous carbon -- Electrochemical stability -- Supercapacitor; Energy storage -- Periodicals; Energy storage -- Research -- Periodicals; 621.3126
• DOI: 10.1016/j.est.2021.102331
• Languages: English
• ISSNs: 2352-152X

Abstract

Highlights: Ordinary filter was used as the precursor of porous carbon electrode materials. Paper was carbonized and activated at a relative low temperature of 650°C. These preparing PFPC possess hierarchically porous structure. The PFPC40 device exhibited a high specific capacitance of 219.6 F∙g −1 at 1 A∙g −1 . Abstract: Adopting filter paper as precursor, combined with a facile carbonization and activation process at a relative low temperature of 650°C, a regular and hierarchical porous carbon electrode materials are obtained to assemble high performance supercapacitor. The PFPC40 supercapacitor exhibits a high specific capacitance of 219.6 F∙g −1 and 173.0 F∙g −1 at 1 A∙g −1 and 50 A∙g −1, respectively, indicating an excellent rate capability of 78.8%. In addition, the capacitance retention of PFPC40 supercapacitor reaches 99.0% after ten thousand charge-discharge cycles at 5 A∙g −1, demonstrating excellent cycling stability. Furthermore, the PFPC40750 sample possesses a high specific surface area (SSA) of 1920 m 2 ∙g −1, and the good electrochemical performance is similar to that of PFPC40. Therefore, this work provides a new strategy for the preparation of hierarchical porous carbon electrode material and this material is promising to applied in energy storage device. Graphical Abstract: Image, graphical abstract