Leakage free electrolyte engraved flexible supercapacitors from Chitosan/GO@MnCO3 polymer hydrogel chelate film under BMIMBF4 ionic liquid assistance

This study investigates leakage free electrolyte engraved flexible supercapacitors fabricated using Chitosan/graphene oxide@MnCO3 polymer hydrogel chelate films. The composite hydrogel film prepared under BMIMBF4 ionic liquid medium via single step hydrothermal technique. The crystalline properties, chemical compositions, surface morphological observations are examined by carrying out X-ray diffraction, X-ray photoelectron spectroscopy, Scanning electron microscopy studies. The XPS summaries of the composite hydrogel reveal typical peaks of Mn 2p1/2 (653.2 eV), Mn 2p3/2 (641.7 eV), N1s (401.1 eV), and C1s (285.6 eV). The fabricated supercapacitor exhibits notable gravimetric capacitance of 312.5 Fg(-1) with good energy density. It performs good capacity retention around 87% after 10,000 charge-discharge cycles. The flexible hydrogel-based super-capacitor may initiate the suitability for smart electronic devices and wearable electronics as energy storage system.

Automated summary

This study investigates leakage-free electrolyte engraved flexible supercapacitors fabricated using Chitosan/graphene oxide@MnCO3 polymer hydrogel chelate films. The fabricated supercapacitor exhibits notable gravimetric capacitance and good capacity retention. The flexible hydrogel-based supercapacitor may be suitable for smart electronic devices and wearable electronics as an energy storage system.