期刊
JOURNAL OF POWER SOURCES
卷 498, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2021.229886
关键词
Free-standing films; Nano-dendrites; Polyaniline; Cellulose; Flexible supercapacitors
资金
- National Natural Science Foundation of China [31770632]
- innovation Fund from Fujian Agriculture and Forestry University [KFA19105A, KFA19106A]
The study presents a method for fabricating flexible, lightweight, and inexpensive cellulose fiber thin film electrodes for supercapacitors, showcasing excellent performance in terms of high specific capacitance and areal capacitance. Furthermore, solid-state supercapacitors based on PANI nano-dendrites demonstrate outstanding specific capacitance, energy density, and power density.
Keeping in view the huge demands of green and flexible supercapacitors to further digitalize and electrify human community, it is imperative to develop cost-effective and eco-friendly solutions. Herein, we report a sequential protocol to fabricate flexible, lightweight and inexpensive cellulose fiber thin film electrode based on vertically aligned polyaniline (PANI) nano-dendrites@fiber for supercapacitors. In this process, the mechanical shearing not only induces the branched architecture on cellulose fibers, but also promotes the subsequent growth of vertically aligned nano-dendrites of PANI on the cellulose fibers with increased PANI loading. The high fibrillation caused by mechanical shearing and the well-ordered growth of vertically aligned PANI dendrites on cellulose fibers make the resultant PANI@Paper hierarchically porous with high specific surface area, conductivity, mechanical strength and flexibility. The PANI@Paper based supercapacitor demonstrates excellent specific capacitance of 296 Fg-1 at 1 Ag-1 and areal capacitance of 5017 mF cm-2 at 10 mA cm-2. Furthermore, a solid-state supercapacitor based on PANI@Paper demonstrates excellent capacitance (282 Fg-1 at 1 Ag-1), high energy density (2.5 Wh kg-1) and power density of (0.3 kW kg-1). Impressively, all-paper supercapacitor fabricated with PANI@Paper and commercial paper shows remarkable capacitance (271 Fg-1 at 1 Ag-1) and flexibility while maintaining the electrochemical stability.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据