Ultra-Wide Voltage Aqueous Superbatteries Enabled by Iron and Zinc Zeolitic Frameworks

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер 17(9), С. 13881 - 13895

Опубликована: Фев. 24, 2025

Extensive research on supercapacitor-battery hybrid devices has bridged the gap between conventional batteries and supercapacitors. However, several challenges persist, including limited capacitance in negative potential range, restricted rate capability, a narrow window (<1.23 V) aqueous electrolytes. Drawing inspiration from notable benefits of bottom-up synthesis, which allows tailoring structure functionality through selection molecular components, we successfully synthesized an Fe-incorporated zeolitic imidazolate framework-8 (composed Zn nodes 2-methylimidazole linkers). Subsequently, metal-organic framework was hydrothermally composited with graphene oxide presence urea to prepare dual metal oxide/N-doped reduced (DMO-NrGO) nanocomposite. Benefiting high hydrogen evolution overpotential zinc-based compounds promising range activity iron-based species, lower limit X-ray confirmed crystalline-amorphous heterophase DMO-NrGO nanocomposite extends up -1.45 V. It exhibits specific capacity (capacitance) 119 mA h g-1 (378 F g-1) at 1.0 A 3.0 M KOH. Interestingly, symmetric based superbattery device demonstrates ultrawide voltage 1.95 V, superior energy 28 W kg-1 outstanding power 29 kW g-1. The electrochemical performance can be attributed nanocomposite, accommodates more active sites, provides additional ion transport channels, reduces phase-transformation resistance, facilitates smooth electron transfer oxides graphene. This innovative synthetic strategy opens opportunities for developing high-performance storage devices.

Язык: Английский

A Coral-Inspired and Fully Self-Powered Wave Monitoring System Based on Hybridized Triboelectric-Electromagnetic Nanogenerator

Sensors and Actuators A Physical, Год журнала: 2025, Номер unknown, С. 116451 - 116451

Опубликована: Март 1, 2025

Язык: Английский