Leveraging Saccharum officinarum for an Exquisite Symmetric Supercapacitor─A Cost-Effective MnCO3 Synthesis Approach for Energy Storage Application
Year: 2025
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide Sugarcane ( Saccharum officinarum ) was employed as a sustainable carbon source to synthesize three-dimensional (3D) spherical manganese carbonate (MnCO 3 ) microspheres, offering a green route to advanced electrode material for high-energy-density symmetric supercapacitors. Although numerous synthesis strategies and material modifications have been explored, a detailed evaluation of environmentally friendly synthesis pathways remains essential. In this study, MnCO 3 microspheres were successfully synthesized via a sugar-derived green synthesis followed by hydrothermal treatment. Owing to their distinctive morphology and tunable structure, MnCO 3 electrodes outperformed several conventional metal oxides and hydroxides. Electrochemical studies in a three-electrode configuration under alkaline conditions demonstrated a specific capacitance of 366 F/g at 0.7 A/g and an excellent cycling stability, with 99% coulombic efficiency after 3000 cycles. Upon configuration into a symmetric supercapacitor device, the electrode operated at a high voltage of 1.2 V, delivering a specific capacitance of 179.8 F/g at 0.5 mA while retaining 50 F/g at 3 mA. The device exhibited an outstanding durability with 99.6% coulombic efficiency over 10 000 cycles and achieved a high energy density of 35.9 Wh/kg and a power density of 2590.6 W/kg. These findings highlight the potential of sugar-cane-derived 3D MnCO 3 microspheres as cost-effective, ecofriendly electrode materials for next-generation sustainable energy storage systems.
Authors: Joel Skaria Joseph, Jeyakiruba Palraj, Subramanian Sakthinathan, Helen Annal Therese, Te-Wei Chiu
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
OpenAlex ID: W4414081105