Nanoarchitechtonics of high surface area carbon material for coin cell supercapacitor application

Title

Nanoarchitechtonics of high surface area carbon material for coin cell supercapacitor application

Creator

Mathew, Elma Elizaba; Balachandran, Manoj

Description

Advancing energy storage systems thrive on innovative electrode materials, balancing sustainable synthesis with enhanced electrochemical performance. In the present work, a feasible approach for developing a carbon derivative exhibiting all the promising features of a superior electrode material is reported. Nitrogen and Sulfur are strategically incorporated into the carbonaceous material along with Potassium-based activation, such that additional pseudocapacitance, along with an enhanced surface area are achieved. Carbon derived from charcoal is co-functionalised with Nitrogen and Sulfur via a two-step pyrolysis technique, resulting in a material that exhibits improved surface area of 1488.8m2g?1 and enhanced electrochemical performance. It showcases a gravimetric capacitance of 689Fg?1 and 295Fg?1 at 1Ag?1, corresponding to the three and two-electrode setups respectively. A gravimetric capacitance of 425Fg?1 is maintained at a high current density of 50Ag?1 with a capacitance retention of 61.6 %. A sustained energy density of 20.50W h kg?1 at a power density of 3.1kWkg?1 is achieved by this material with a stability of 94 % for 5000 cycles at 2Ag?1. In addition, coin cells fabricated with the as-prepared material demonstrated the real-world feasibility by illuminating LEDs of different colors. 2026 Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

Source

Journal of Power Sources;Volume;676;Issue;;Article No.;239891;

Date

01-01-2026

Publisher

Elsevier B.V.

Subject

Energy density; Heteroatoms; Power density; Specific surface area; Supercapacitors

Coverage

Mathew E.E., Department of Physics & Electronics, Christ (Deemed to be University), Bangalore, 560029, India; Balachandran M., Department of Physics & Electronics, Christ (Deemed to be University), Bangalore, 560029, India

Rights

Restricted Access; Hardcopy may be available in the library

Relation

ISSN: 3787753; CODEN: JPSOD

Format

online

Language

English

Type

Article

Identifier

https://doi.org/10.1016/j.jpowsour.2026.239891

https://www.scopus.com/pages/publications/105034630966?origin=resultslist