Work

Enhanced energy storage performance of activated carbon through tannic acid-ferric ion coordination

Year: 2025

Type: article

Abstract: This study modified activated carbon (AC) with tannic acid (TA) and ferric ions (Fe3+) to create AC-TA-Fe composites for supercapacitor electrodes. AC-TA-Fe0.2 showed the best performance, achieving a specific capacitance of 199.7 F·g-1 at 1 A·g-1 . In a symmetric supercapacitor, it delivered 8.7 Wh·kg-1 at 2750 W·kg-1 and retained nearly 100% capacity after 10,000 cycles. The enhanced performance was due to the synergistic effects of TA and Fe, which improved surface redox activity, conductivity, and pore structure. This highlights TA and Fe-based modifications for efficient, durable electrode materials in energy storage.

Source: Digest Journal of Nanomaterials and Biostructures

DOI: 10.15251/djnb.2025.203.913

Authors: C. Y. Chao, K. Y. Fu, R. Wang, Y. Jia, P. J. Li, H. Li

Institutions: Xuchang University, China National Offshore Oil Corporation (China)

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: gold

Estimated APC paid: $323