Biomimetic Synthesis of PANI/Graphitic Oxidized Carbon Nitride for Supercapacitor Applications

Polyaniline (PANI) composites have gained momentum as supercapacitive materials due to their high energy density and power density. However, some drawbacks in their performance remain, such as the low stability after hundreds of charge-discharge cycles and limitations in the synthesis scalability. H...

Full description

Saved in:
Bibliographic Details
Published in:Polymers 2022-09, Vol.14 (18), p.3913
Main Authors: Martínez-Cartagena, Manuel Eduardo, Bernal-Martínez, Juan, Banda-Villanueva, Arnulfo, Enríquez-Medrano, Javier, Lechuga-Islas, Víctor D., Magaña, Ilse, Córdova, Teresa, Morales-Acosta, Diana, Olivares-Romero, José Luis, Díaz-de-León, Ramón
Format: Article
Language:English
Subjects:
Aniline
Biomimetic materials
Biomimetics
Boron nitride
Capacitors
Carbon
Carbon nitride
Composite materials
Discharge
Electric properties
Electrochemical analysis
Enzymes
Graphene
Hemoglobin
Morphology
Nanostructure
Polyanilines
Polyethylene glycol
Polymerization
Polymers
Stability
Supercapacitors
Synthesis
Ultrasonic imaging
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Polyaniline (PANI) composites have gained momentum as supercapacitive materials due to their high energy density and power density. However, some drawbacks in their performance remain, such as the low stability after hundreds of charge-discharge cycles and limitations in the synthesis scalability. Herein, we report for the first time PANI-Graphitic oxidized carbon nitride composites as potential supercapacitor material. The biomimetic polymerization of aniline assisted by hematin, supported by phosphorous and oxygen-modified carbon nitrides (g-POCN and g-OCN, respectively), achieved up to 89% yield. The obtained PAI/g-POCN and PANI/g-OCN show enhanced electrochemical properties, such as conductivity of up to 0.0375 S/cm, specific capacitances (Cs) of up to 294 F/g (at high current densities, 5 A/g) and a stable operation after 500 charge-discharge cycles (at 3 A/g). In contrast, the biomimetic synthesis of Free PANI, assisted by stabilized hematin in cosolvents, exhibited lower performance properties (65%). Due to their structural differences, the electrochemical properties of Free PANI (conductivity of 0.0045 S/cm and Cs of up to 82 F/g at 5 A/g) were lower than those of nanostructured PANI/g-POCN and g-OCN supports, which provide stability and improve the properties of biomimetically synthesized PANI. This work reveals the biomimetic synthesis of PANI, assisted by hematin supported by modified carbon nitrides, as a promising strategy to produce nanostructured supercapacitors with high performance.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym14183913