Nano-Micro Letters

Hierarchical and Porous RGO/PEDOT/PANI Hybrid for Planar/Linear Supercapacitor with Outstanding Flexibility and Structural Stability

Fuwei Liu1, 2, Luoyuan Xie1, Li Wang1, Wei Chen3, Wei Wei4, Xian Chen1, Shaojuan Luo5, Lei Dong6, Qilin Dai7, Yang Huang1, *, Lei Wang1, *

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Nano-Micro Lett. (2020) 12: 17

First Online: 04 January 2020 (Article)

DOI:10.1007/s40820-019-0342-5

*Corresponding author. E-mail: y.huang@outlook.com (Yang Huang); wl@szu.edu.cn (Lei Wang)

 

Abstract

 


Toc

A number of hybrid electrodes for supercapacitors (SCs) are a reckless combination of active materials without proper structural design, which keeps them from living up to their potential. Herein we successfully design a reduced graphene oxide/poly(3,4-ethylenedioxythiophene)/polyaniline (RGO/PEDOT/PANI) flexible hybrid with hierarchical and porous structure for high-performance SCs, in which components can fully harness their own advantages, forming an interconnected and highly conductive framework with substantial interfaces/reactive sites for fast electrochemical reaction. Thus, this hybrid achieves a high capacitance of 535 F g−1 along with good rate capability and cycling stability. The planar SCs based on this flexible hybrid delivers an energy density of 26.89 Wh kg−1 at a power density of 800 W kg−1, showing outstanding capacity. Furthermore, a linear SC is developed via modifying a non-conductive cotton yarn with this hybrid, three of which in series easily powers a digital watch for over half an hour. The great flexibility and structural stability further enable this linear SCs to power the watch continuously when it is stretched, bended, twisted or knotted arbitrarily. We believe this hybrid will be a beneficial reference for the development of high-performance SCs. 


 

Keywords

RGO/PEDOT/PANI; Hierarchical; Porous; Supercapacitor; High-performance

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