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Boosting Honeycomb-like Layer Double Hydroxides Nanosheets as advanced Electrode for Supercapacitors

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Abstract Electrode materials are crucial for the electrochemical performance of supercapacitors. Thus, it is urgent to develop a satisfactory electrode material with excellent energy storage properties. Binary metal hydroxides are… Click to show full abstract

Abstract Electrode materials are crucial for the electrochemical performance of supercapacitors. Thus, it is urgent to develop a satisfactory electrode material with excellent energy storage properties. Binary metal hydroxides are competitive candidates for supercapacitors. Herein, we prepared honeycomb-like NiCo(OH)2 nanosheet arrays grown on nickel foam by a facile one-step solvothermal method. The electrochemical performance of as-prepared honeycomb-like NiCo(OH)2 nanosheet arrays as electrode materials for supercapacitor have been evaluated. The NiCo(OH)2 electrode exhibits higher areal capacity (267 mF cm−2) compared with Ni(OH)2 (31.2 mF cm−2) and Co(OH)2 (87.73 mF cm−2) at the current density of 20 mA cm−2. The capacity retention can up to 83.8% after 5000 cycles. Such intriguing electrochemical performance enables it to be a potential electrode material for supercapacitors.

Keywords: layer double; honeycomb like; double hydroxides; boosting honeycomb; electrochemical performance; like layer

Journal Title: Thin Solid Films
Year Published: 2020

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