Work

Restricted growth of polyaniline nanofiber arrays between holey graphene sheets on carbon cloth towards improved charge storage capacity

Year: 2024

Type: article

Abstract: The rapid−growing demand for flexible and wearable electronics has driven increased interest in developing porous electrodes with outstanding charge storage capacity especially areal capacity for polymeric and hybrid supercapacitors . Herein, unique porous polyaniline/holey graphene/carbon cloth (PANI/HG/CC) composite electrodes were constructed by combining rapid frozen interfacial polymerization and layer−by−layer spraying to restrict the growth of PANI nanofiber arrays between carbon−based materials. Benefiting from rapid charge transport, more electroactive sites and improved electrolyte penetration provided by hierarchical porous structure and highly oriented PANI nanofibers in the composite (P − G) by growing directly PANI array on the CC and applying graphene sheets as interlayer and cover layer, an areal specific capacitance of 3.22 F cm −2 at 5 mA cm −2 was achieved. A maximum areal energy density of up to 104.86 μWh cm −2 , and excellent capacity retention of 89.5 % at 20 mA cm −2 after 5000 cycles also were achieved for flexible symmetric all−solid−state supercapacitor . Furthermore, the zinc−ion hybrid supercapacitor (P − G||Zn) assembled with P − G cathode and Zn anode could display a capacity of 217.7 mAh g −1 at 0.2 A g −1 , and the maximum energy density of 130.6 Wh kg −1 at the power density of 120 W kg −1 .

Source: Journal of Energy Storage

DOI: 10.1016/j.est.2024.114857

Authors: Yeping Liu, Qianpeng Jin, Yuchi Wang, Zongyi Qin

Institutions: Donghua University, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials

Language: English

Topic: Supercapacitor Materials and Fabrication

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $3,030