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- W4281738171 abstract "Electrochemical performance of electrode in structural supercapacitor is much lower than that in common supercapacitor owing to solidification confinement of ions movement. Herein, NiCo 2 O 4 /reduced graphene oxide (rGO) nanosheets are firstly assembled with KOH/polyacrylic acid (PAA)/cement, LiOTf/PAA cement, KOH/polyethylene oxide (PEO) cement and LiOTf/PEO cement into four structural supercapacitors through hydration process. As the NiCo 2 O 4 content in NiCo 2 O 4 /rGO composite exceeds 13 wt%, the areal capacitance of NiCo 2 O 4 /rGO electrode at high current densities decreases. The (13%) NiCo 2 O 4 /rGO electrode presents the best electrochemical performances with initial areal capacitance of 3.16 F cm −2 at 0.5 mA cm −2 , capacitance retention rate of 61% after current density increasing by 80-fold and retention of 86.1% after 10000 cycles at 10 mA cm −2 . The corresponding four structural supercapacitors show superior electrochemical performances with areal capacitances of ∼ 330.4 mF cm −2 , coulombic efficiencies of ∼ 100%, power densities of ∼ 2.7 mW cm −2 and energy densities of ∼ 0.64 mWh cm −2 . The electrochemical efficiencies of (13%) NiCo 2 O 4 /rGO electrodes in four structural supercapacitor devices are in the range of 0.16 ∼ 0.12, which are prominent in high-end structural supercapacitors. Thus NiCo 2 O 4 /rGO electrode is demonstrated to enhance the electrochemical matching with polymer cement electrolyte for structural supercapacitor." @default.
- W4281738171 created "2022-06-13" @default.
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- W4281738171 date "2022-06-01" @default.
- W4281738171 modified "2023-09-25" @default.
- W4281738171 title "Enhanced Electrochemical Matching between NiCo<sub>2</sub>O<sub>4</sub>/Reduced Graphene Oxide and Polymer Cement Electrolyte for Structural Supercapacitor" @default.
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- W4281738171 doi "https://doi.org/10.1149/1945-7111/ac7752" @default.
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