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| Naji, M. |
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| Ertürk, Emre |
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| Azevedo, Nuno Monteiro |
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Kumar, Raju Suresh
in Cooperation with on an Cooperation-Score of 37%
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Publications (3/3 displayed)
- 2024Study on current collector and electrolyte design/electrochemical behaviour of an in-plane lignin derived laser scribed graphene for microsupercapacitor applicationcitations
- 2023Phytocrystallization of silver nanoparticles using <i>Cassia alata</i> flower extract for effective control of fungal skin pathogenscitations
- 2023Lignin derived nanoparticle intercalation on nitrogen-doped graphene quantum dots for electrochemical sensing of cardiac biomarkercitations
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article
Study on current collector and electrolyte design/electrochemical behaviour of an in-plane lignin derived laser scribed graphene for microsupercapacitor application
Abstract
<p>Current collectors and electrolyte pairs are frequently overlooked in the development of supercapacitors. In electrode design and sealed packaging, the mechanical and chemical properties of the electrolyte must be retained while maintaining the integrity of microelectrodes and current collectors of the microsupercapacitors. In this research, the physical and electrochemical response of copper (Cu) and 316 stainless steel current collector (SS) for lignin-derived laser scribed graphene (L-LSG) microsupercapacitor with K<sub>2</sub>SO<sub>4</sub> (K<sup>+</sup>) and H<sub>2</sub>SO<sub>4</sub> (H<sup>+</sup>) as an electrolyte medium was studied. XPS results confirmed a passivation layer on a copper electrode before and after the electrochemical reaction involving H<sub>2</sub>SO<sub>4</sub> as the electrolyte medium of the highly porous L-LSG structure with six pairs of microelectrodes and graphene current collectors. Analysis of the CV and GCD curves shows that the SS/K<sup>+</sup> pair is the most suited for an L-LSG microsupercapacitor, with an areal capacitance and energy density of 22.22 mFcm<sup>−2</sup> and 0.00153 mWhcm<sup>−2</sup>, respectively at 0.08 mAcm<sup>−2</sup>.</p>