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

Abstract

HIGHLIGHTS • Hierarchical porous reduced graphene oxide/poly(3,4-ethylenedioxythiophene)/polyaniline hybrid was designed. • The hybrid achieves a high capacitance of 535 F g −1 along with a good rate capability and cyclability. ABSTRACT Many hybrid electrodes for supercapacitors (SCs) are a reckless combination without proper structural design that keeps them from fulfilling their potential. Herein, we design a reduced graphene oxide/poly(3,4-ethylenedioxythiophene)/polyaniline (RGO/PEDOT/PANI) hybrid with hierarchical and porous structure for high-performance SCs, where components fully harness their advantages, forming an interconnected and conductive framework with substantial reactive sites.Thus, this hybrid achieves a high capacitance of 535 F g −1 along with good rate capability and cyclability. The planar SC based on this hybrid deliver an energy density of 26.89 Wh kg −1 at a power density of 800 W kg −1. The linear SC developed via modifying a cotton yarn with the hybrid exhibits good flexibility and structural stability, which operates normally after arbitrary deformations. This work provides a beneficial reference for developing SCs.

In‐Situ Electrochemically Activated Surface Vanadium Valence in V2C MXene to Achieve High Capacity and Superior Rate Performance for Zn‐Ion Batteries

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Soft materials for wearable supercapacitors

“…These studies proved this interconnected porous structure could improve the electrochemical performance of graphene-based electrodes by lower rGO sheet stacking, more accessible specific surface areas and rapid ion diffusion and electron transport throughout the entire interconnected porous network. However, according to the energy storage principle (EDLC and pseudocapacitanc) of SCs, the introduction of pseudocapacitive component into rGO sheets during the preparation process can not only hinder the re-stacking of rGO sheets, but also further improve either mechanical or electrochemical properties of as-prepared free-standing and flexible electrodes for WSCs [63][64][65][66][67]. Our groups prepared ternary composite free-standing and flexible rGO based films.…”

Electrochemical performance of polydopamine modified PANI/rGO composites: Dependency on preparation sequence

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