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- W3149404746 abstract "As a conventional electrode material of electric double-layer capacitors (EDLC), activated carbon (AC) still faces challenges to exhibit high capacitance. To address this problem, herein, we introduce a combined method of oxygen plasma and Al 2 O 3 tomic layer deposition (ALD) on AC electrodes to reduce the impedance and improve the cycle stability of EDLC. The defect structure can be precisely designed by simply tuning the oxygen-plasma treatment time, thereby affecting the microstructures of AC electrode. Such a tactic permits the first-operated AC electrode with more defects and the ALD passivation of AC resulting in an outstanding rate performance for the device (40.6 F g –1 at 5 mA cm –2 , 20.1 Fg –1 at 100 mA cm –2 ) and cycling stability (∼90% retention after 5,000 cycles). This benefit from the synergistic effect of defects from doped oxygen and stable aluminum oxide layer on the electrode surface. This work delivers a feasible strategy to construct a stable AC material with superior cycling performance for supercapacitor." @default.
- W3149404746 created "2021-04-13" @default.
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- W3149404746 date "2021-04-06" @default.
- W3149404746 modified "2023-10-18" @default.
- W3149404746 title "Synergy of Oxygen Plasma and Al2O3 Atomic Layer Deposition on Improved Electrochemical Stability of Activated Carbon-Based Supercapacitor" @default.
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- W3149404746 doi "https://doi.org/10.3389/fenrg.2021.653203" @default.
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