Synergistic Dual Heteroatom-Engineered Superactivated Carbon Unlocks Record-High Hydrogen Storage via Mg─F Orbital Hybridization

Synergistic Dual Heteroatom-Engineered Superactivated Carbon Unlocks Record-High Hydrogen Storage via Mg─F Orbital Hybridization

© 2025 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - (2025) vom: 21. Okt., Seite e09511
1. Verfasser: Tian, Jingxu (VerfasserIn)
Weitere Verfasser: Wang, Peixin, Deng, Zhanpeng, Wei, Da, Chen, Hongyu, Zhou, Changkai, Pi, Wenji, He, Peng, Liu, Yong, Liu, Bo, Wang, Jiehui, Wang, Likun, Xu, Xiang, Zeng, Zheng, Wang, Shaobin, Li, Liqing
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article biochar hydrogen storage orbital‐level modulation superactivated carbon surface modification
Beschreibung
Zusammenfassung:© 2025 Wiley‐VCH GmbH.
Hydrogen storage remains a critical challenge for sustainable energy systems. Here, a surface functionalization strategy is reported through C-Mg─F ternary coordination to engineer biomass-derived porous carbons with exceptional hydrogen storage performance. Using tobacco stems as precursors, the synthesized Mg-FC material achieves record hydrogen uptake capacities under 77 K of 4.2 wt% at 1 bar and 9.7 wt% at 50 bar, doubling pristine carbon performance. Multiscale analyses reveal adsorption mechanisms dominated by orbital interactions at Mg-active sites, where H2 electron transfer arises from hybridization of Mg 2p and unsaturated 3s orbitals, inducing directional polarization of H2 electron clouds which synergizes with hierarchical porosity (3500 m2 g-1 surface area) to enhance adsorption. Combined photophysical analysis establishes a mechanistic framework linking static electronic configurations to dynamic adsorption processes. The material retains structural integrity under pressure cycling and demonstrates universal applicability across diverse biomass. This work provides a generalizable paradigm for designing high-capacity hydrogen storage materials via orbital-level modulation of porous carbons
Beschreibung:Date Revised 21.10.2025
published: Print-Electronic
Citation Status Publisher
ISSN:1521-4095
DOI:10.1002/adma.202509511