Acid functionalized Arachis hypogaea skin based carbon nanosphere as efficacious material for enhanced energy storage
- Title
- Acid functionalized Arachis hypogaea skin based carbon nanosphere as efficacious material for enhanced energy storage
- Creator
- Soman G.; Molahalli V.; Sayeed K.; Pandey K.; Kulkarni B.B.; Hegde G.
- Description
- The present introduces a single step approach for enhancing supercapacitor performance by utilizing acid-functionalized porous carbon derived from the inner skin of Arachis hypogaea as a sustainable biomass precursor. Through pyrolysis at 800 C in a nitrogen atmosphere, the resulting porous carbon material demonstrates unique structural and electrochemical behavior as confirmed by FTIR, XRD, Raman spectroscopy, FE-SEM, HR-TEM,EDS,BET analyses. The acid functionalized variant (FAH8) significantly outperformed the non-functionalized carbon (AH8), showing a fourfold increase in specific capacitance. Electrochemical evaluations revealed that FAH8 achieved a high specific capacitance of 273 Fg?1 at 0.25 Ag?1 in 3 M KOH, with an energy density of 22.5 Wh kg?1 and a power density of 125 W kg?1 in a three-electrode setup. The symmetrical CR2032 device of FAH8 exhibited a maximum capacitance of 98 Fg?1 and displayed excellent stability, with 98.5 % efficiency and 97.4 % capacitance retention after 7500 cycles. Notably, the device also delivered a high energy density of 23.17 Wh kg?1 and power density of 325.0 W kg?1. The enhanced performance attributed by the simple acid functionalization highlights the potential of this material in energy storage. Thus, the study not only emphasizes the effective use of low-cost biomass precursors but also provides a straightforward functionalization strategy to boost energy storage capabilities, paving the way for sustainable high-performance supercapacitors. 2025 Elsevier Ltd
- Source
- Journal of Energy Storage, Vol-111
- Date
- 2025-01-01
- Publisher
- Elsevier Ltd
- Subject
- Arachis hypogea; Current density; Energy density; Power density; Supercapacitor
- Coverage
- Soman G., Department of Chemistry, Christ University, Bangalore, 560029, India, Centre for Advanced Research and Development (CARD), Christ University, Bangalore, 560029, India; Molahalli V., Department of Physics, B.M.S. College of Engineering, Bull Temple Road, Bengaluru, 560019, India, Centre for Nano-Materials & Displays, B.M.S.College of Engineering, Bull Temple Road, Bengaluru, 560019, India; Sayeed K., Centre for Nano and Soft Matter Sciences, Karnataka, Bengaluru, 562162, India; Pandey K., Centre for Nano and Soft Matter Sciences, Karnataka, Bengaluru, 562162, India; Kulkarni B.B., Materials Science & Catalysis Division, Poornaprajna Institute of Scientific Research (PPISR), Bidalur Post, Devanahalli, Karnataka, Bangalore, 562164, India; Hegde G., Department of Chemistry, Christ University, Bangalore, 560029, India, Centre for Advanced Research and Development (CARD), Christ University, Bangalore, 560029, India
- Rights
- Restricted Access
- Relation
- ISSN: 2352152X
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Soman G.; Molahalli V.; Sayeed K.; Pandey K.; Kulkarni B.B.; Hegde G., “Acid functionalized Arachis hypogaea skin based carbon nanosphere as efficacious material for enhanced energy storage,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 24, 2025, https://archives.christuniversity.in/items/show/12559.