Enhanced Electrochemical Performance of Aqueous Zinc-Ion Batteries With Porous Basil-Derived Carbon and Nanostructured MnO2 Composite Cathodes
Yuda Prima Hardianto , Abdulmajid A. Mirghni , Syed Shaheen Shah , Haneen Mohammed Alhassan , Mostafa M. Mohamed , Bashir Ahmed Johan , Ananda Sholeh Rifky Hakim , Md. Abdul Aziz
Battery Energy ›› 2025, Vol. 4 ›› Issue (6) : e70024
Enhanced Electrochemical Performance of Aqueous Zinc-Ion Batteries With Porous Basil-Derived Carbon and Nanostructured MnO2 Composite Cathodes
This study introduces a novel composite cathode for aqueous zinc-ion batteries (ZIBs), leveraging porous basil-derived activated carbon (BAC) and nanostructured manganese dioxide (MnO2) synthesized through a one-step hydrothermal process. For the first time, basil-derived carbon is integrated with MnO2, resulting in enhanced electrochemical performance. The MnO2/BAC composite delivers a remarkable specific capacity of 237 mAh/g at 0.5 A/g, along with an energy density of 314 Wh/kg and a power density of 0.66 kW/kg, outperforming cathodes made from pristine MnO2 or BAC. These improvements stem from reduced particle size and a synergistic balance of capacitive and diffusive charge storage mechanisms. Density functional theory calculations corroborate the experimental results, revealing the composite's superior quantum capacity (158.7 µC/cm2) and quantum capacitance (80.4 µF/cm2). Stability assessments highlight excellent cycle life, with > 90% capacity retention and 100% Coulombic efficiency over 300 cycles. The exceptional performance is attributed to the material's unique nanostructure, high surface area (1090 m2/g), and optimized porosity. Additionally, practical applications of ZIBs in pouch cell form using the MnO₂/BAC cathode are demonstrated, showcasing its capability to power a toy car over a satisfactory distance. This study establishes a new benchmark for sustainable and cost-effective cathode materials, significantly advancing ZIB technology for high-efficiency energy storage applications.
composite materials / energy storage / nanostructured MnO2 / porous carbon / zinc-ion batteries
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2025 The Author(s). Battery Energy published by Xijing University and John Wiley & Sons Australia, Ltd.
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