Work

Curcuma Longa Derived Heteroatom‐Self‐Doped Porous Carbon for Cost‐Effective Solid‐State Supercapacitors

Year: 2024

Type: article

Abstract: The cost‐effective synthesis of supercapacitors is a significant challenge in energy storage research. This study introduces a sustainable and cost‐effective method for synthesizing biomass‐derived carbon for solid‐state supercapacitor fabrication. Turmeric (Curcuma longa) plant waste is carbonized at three distinct temperatures (500, 600, and 700 °C for 3 hours), and the resulting carbon is characterized to determine the optimal carbonization conditions. Physicochemical characterization revealed the presence of multiple heteroatoms, which may contribute to enhanced capacitance. Electrochemical studies showed that the carbonized material at 600 °C achieved the highest specific capacitance of 110.04 F/g at 0.1 A/g current density. After activation, the specific capacitance increased to 188 F/g at 0.1 A/g current density. A solid‐state supercapacitor was assembled using the synthesized activated carbon and PVA/H2SO4 gel‐type electrolyte. The resulting device exhibited an impressive specific capacitance of 92.33 F/g at 0.1 A/g, a power density of 4295.28 W/kg, and a cycling stability of 97.42 %. This supercapacitor shows promising potential as an economical and sustainable energy storage solution for portable electronics.

Source: ChemNanoMat

DOI: 10.1002/cnma.202400505

Authors: G. S. Sangeetha Gopan, Nelsa Abraham, S. Rani, Dona Kurian, K. M. Alana

Institutions: APJ Abdul Kalam Technological University, College of Engineering Trivandrum

Language: English

Topic: Supercapacitor Materials and Fabrication

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

SDGs: Affordable and clean energy, Responsible consumption and production, Climate action, Industry, innovation and infrastructure

Open Access status: bronze

Funder: Science and Engineering Research Board