Acacia auriculiformisDerived Bimodal Porous Nanocarbons via Self-Activation for High-Performance Supercapacitors
- Title
- Acacia auriculiformisDerived Bimodal Porous Nanocarbons via Self-Activation for High-Performance Supercapacitors
- Creator
- Bhat V.S.; Jayeoye T.J.; Rujiralai T.; Sirimahachai U.; Chong K.F.; Hegde G.
- Description
- Carbon nanomaterials derived from Acacia auriculiformis pods as electrodes for the electrochemical double-layer capacitors were explored. Four pyrolysis temperatures were set (400, 600, 800, and 1,000C) to understand the role of temperature in biomass pyrolysis via a possible self-activation mechanism for the synthesis of carbon materials. The carbon materials synthesized at 800C (AAC800) were found to exhibit a well-organized hierarchical porous structure, quantified further from N2 adsorption/desorption isotherms with a maximum specific surface area of 736.6m2/g. Micropores were found to be contributing toward enhancing the specific surface area. AAC800 exhibited a maximum specific capacitance of 176.7F/g at 0.5A/g in 6.0M KOH electrolyte in a three-electrode setup. A symmetric supercapacitor was fabricated using AAC800 as an active material in an organic electrolyte composed of 1.0M tetraethylammonium tetrafluoroborate (TEABF4) as a conducting salt in the acetonitrile (ACN) solvent. The self-discharge of the cell/device was analyzed from fitting two different mathematical models; the cell also exhibited a remarkable coulombic efficiency of 100% over 10,000 charge/discharge cycles, retaining ?93% capacitance at 2.3V. Copyright 2021 Bhat, Jayeoye, Rujiralai, Sirimahachai, Chong and Hegde.
- Source
- Frontiers in Energy Research, Vol-9
- Date
- 2021-01-01
- Publisher
- Frontiers Media S.A.
- Subject
- organic electrolyte; porous carbon; pyrolysis; self-activation; supercapacitors
- Coverage
- Bhat V.S., Centre for Nano-materials and Displays (CND), B.M.S. College of Engineering, Bangalore, India, Department of Materials Science, Mangalore University, Mangalore, India; Jayeoye T.J., Division of Physical Science, Faculty of Science, Prince of Songkla University, Songkhla, Thailand; Rujiralai T., Division of Physical Science, Faculty of Science, Prince of Songkla University, Songkhla, Thailand; Sirimahachai U., Division of Physical Science, Faculty of Science, Prince of Songkla University, Songkhla, Thailand; Chong K.F., Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, Gambang, Malaysia; Hegde G., Centre for Nano-materials and Displays (CND), B.M.S. College of Engineering, Bangalore, India, CHRIST (Deemed to be University), Bengaluru, India
- Rights
- All Open Access; Gold Open Access
- Relation
- ISSN: 2296598X
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Bhat V.S.; Jayeoye T.J.; Rujiralai T.; Sirimahachai U.; Chong K.F.; Hegde G., “Acacia auriculiformisDerived Bimodal Porous Nanocarbons via Self-Activation for High-Performance Supercapacitors,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 26, 2025, https://archives.christuniversity.in/items/show/15630.