Bio-Inspired Energy Storage Electrode: Utilizing Co3O4 Hollow Spheres Derived from Sugarcane Bagasse Extract Synthesis Via Hydrothermal Route

• Published in: Journal of inorganic and organometallic polymers and materials Vol. 34; no. 12; pp. 6088 - 6101
• Main Authors: Nagavenkatesh, K. R., Murugesan, M., Sambathkumar, C., Devendran, P., Nallamuthu, N., Krishna Kumar, M.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.12.2024; Springer Nature B.V
• Subjects: Activated carbon; Asymmetry; Bagasse; Carbon; Cellulose fibers; Chemistry; Chemistry and Materials Science; Cobalt oxides; Devices; Energy storage; Functional groups; Industrial wastes; Infrared analysis; Infrared spectroscopy; Inorganic Chemistry; Ion transport; Low resistance; Metal oxides; Organic Chemistry; Polymer Sciences; Roasting; Scale (corrosion); Spectrum analysis; Sugarcane; Supercapacitors; ASC device; Co; hollow spheres; Sugarcane bagasse; O; Energy storage
• ISSN: 1574-1443; 1574-1451
• DOI: 10.1007/s10904-024-03237-7

Recent research has explored the utilization of sugarcane bagasse, a bio-industrial waste, to fabricate energy storage devices due to ecofriendly nature, low cost with industrial scale production. In this investigation, cobalt oxide hollow spheres (Co 3 O 4 HSs) were synthesized from waste sugarcane bagasse extract with the carbon spheres (CSs) act as template. The main component of sucrose (C 12 H 22 O 11 ) linked with cellulose fibers and other oxygenic functional groups were used to prepare CSs. Previously, a metal precursor (Co(NO 3 ) 2 .6H 2 O) was mixed with sugarcane bagasse extract and subjected to a hydrothermal process, resulting in uniform-sized metal CSs. The uniform sized Co 3 O 4 HSs were formed by calcined metal CSs. The calcination temperature plays a crucial role to eliminating implanted carbon material on inter surface area of the metal oxide, shaping the Co 3 O 4 HSs. Structural, vibrational, morphology and elemental analyses were confirmed by X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX), respectively. Electrochemical tests show improved ion transport and low resistance, leading to high capacitance in asymmetric supercapacitor (ASC) devices. Subsequently, for asymmetric supercapacitor (ASC) devices, using with Co 3 O 4 HSs has function of cathode and activated carbon (AC) as anode, the devices demonstrated impressive results of 33.1 Fg − 1 at 1 Ag − 1 , 86.8% retention after 4,000 cycles, as well as the energy density and power density of 5.9 W h kg − 1 at 1500 W kg − 1 . The Co 3 O 4 HSs||AC device exhibits promising energy storage properties for future applications.