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- W3193669587 endingPage "131895" @default.
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- W3193669587 abstract "• The ZC-CSH SSC exhibits a high specific capacitance of 177.0F g −1 . • It elucidates high energy (39.3 W h kg −1 ) and power density (19064.3 W kg −1 ). • It reveals stability 92.8 & 96.1 % using 10,000 cycles and 16 h voltage holding and self-discharge. • It displays a trivial leakage current of 0.06 mA during first 2 h voltage holding tests. • It represents the good health of the ZC-CSH SSC during the 8 h self-discharge. We report an eco-friendly, in-situ , and one-step synthesis of ZnO-Co 3 O 4 core-shell heterostructure (ZC-CSH) using the hydrothermal process as a transcendent nanomaterial for the supercapacitor applications. The ZC-CSH SSC showed a wide potential window (1.6 V), the excellent specific capacitance of 177.0F g −1 at 1.4 A g −1 , high energy density (39.3 W h kg −1 ), and power density (19064.3 W kg −1 ). Further, the ZC-CSH SSC revealed excellent stability of 92.8 % after 10,000 cycles at 12.4 A g −1 using galvanostatic charging-discharging. Besides, the ZC-CSH SSC unraveled the outstanding stability of 96.1 % after the 8 h Voltage holding tests (VHT) at 1.6 V + 8 h Self-discharge tests (SDT). Moreover, the ZC-CSH SSC indicated a trivial leakage current of 0.06, 0.11, 0.15, and 0.17 mA during 2, 4, 6, and 8 h VHT, respectively. The ZC-CSH SSC demonstrated a voltage drop from 1.6 V to 0.39, 0.38, 0.37, and 0.36 V after 2, 4, 6, and 8 h VHT and SDT. To understand the ZC-CSH SSC's self-discharge behavior, this work explored the insights of the self-discharge mechanisms based on two thermodynamic processes, ionic concentration gradient (diffusion-control model) and potential difference (potential-driven model). Also, according to the tight-bonding (strong interactions) and loose-bonding (weak interactions), this work envisaged electrolyte ions' interactions with electrode materials to explore the coherent insights of the self-discharge behavior of the ZC-CSH SSC. It is concluded that this approach can lead to an unwavering performance of the ZC-CSH SSC for electronic portable futuristic gadgets." @default.
- W3193669587 created "2021-08-30" @default.
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- W3193669587 date "2022-01-01" @default.
- W3193669587 modified "2023-10-16" @default.
- W3193669587 title "Voltage holding and self-discharge phenomenon in ZnO-Co3O4 core-shell heterostructure for binder-free symmetric supercapacitors" @default.
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- W3193669587 doi "https://doi.org/10.1016/j.cej.2021.131895" @default.
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