Redox cascade engineering in urea-crystallized manganese-integrated nickel-iron metal-organic frameworks for high-performance hybrid supercapacitors

Journal article

Authors/Editors

CHUTIMA KONGVARHODOM

Strategic Research Themes

Innovative Materials, Manufacturing and Construction (Strategic Research Themes)

Publication Details

Author list: Dong, S.-F.; Cheshideh, H.; Kubendhiran, S.; Kongvarhodom, C.; Saukani, M.; Yougbaré, S.; Chen, H.-M.; Wu, Y.-F.; Lin, L.-Y.

Publisher: Elsevier

Publication year: 2025

Journal: Journal of Power Sources (0378-7753)

Volume number: 660

Start page: 238566

ISBN: 444894810

ISSN: 0378-7753

eISSN: 1873-2755

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-105018100125&doi=10.1016%2Fj.jpowsour.2025.238566&partnerID=40&md5=69c1bf770f6e227148027d57962b5b30

Languages: English-Great Britain (EN-GB)

View on publisher site

Abstract

The growing need for hybrid energy storage systems that merge the advantages of batteries and supercapacitors has sparked considerable interest. As a result, researchers have begun to explore advanced electrode materials that offer both strong redox activity and long-term structural stability. Our study proposes a dual-modification approach to engineer a highly porous and redox-enriched NiFe-based metal organic framework (NiFe-MOF) through urea-assisted synthesis and in situ integration of MnO2. The final Mn/NiFeMOF-U hybrid shows a hierarchically porous structure with abundant faradaic sites that facilitate fast ion transport and enhanced multivalent redox coupling across Ni, Fe, and Mn centers. The results indicate surface-controlled charge storage dominated by reversible Ni2+/Ni3+, Fe2+/Fe3+, and Mn2+/Mn4+transitions. Furthermore, electron hopping and a robust electron cascade are identified as the main electron transfer pathways in this system. By pairing Mn/NiFeMOF-U with reduced graphene oxide (rGO), the assembled battery-supercapacitor hybrid (BSH) demonstrates an outstanding energy density of 1.7 mWh/cm2at 6.4 mW/cm2, while maintaining 91% capacitance retention and 99% Coulombic efficiency after 10,000 cycles. Overall, we believe this study not only presents a new strategy for designing redox-modulated MOF hybrids but also confirms their practical potential for next-generation electrochemical energy storage. © 2025 Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

Keywords

No matching items found.