| Summary: | 碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 106 === Recently, the study of two-dimensional (2D) nanostructure has been developed rapidly due to it exhibits many unique physical and chemical properties when compared to their bulk counterparts. In this work, the first-ever study of nickel monoselenide (NiSe) materials used the chemical vapor deposition (CVD) method to synthesize the hexagonal nanoflake-based of NiSe with lateral size of 12 μm on the SiO2/Si substrate. The electrical properties measured that the resistivity of parallel and vertical the nanoflake were resulted in 2.79 x10 -5(Ω·m) and 4.38 x10 2 (Ω·m), respectively. As a result, a large resistivity anisotropy ratio about 1.4 x 10 7 was revealed. Moreover, the NiSe nanoflakes were also taken as anodes for lithium-ion batteries (LIBs) and sodium-ion batteries (NIBs), the initial discharge capacities of the NiSe nanoflakes with current density of 100 mA g−1 for LIBs and NIBs are 522.2 and 343.8 mAh g−1, respectively. During the cycle performance measurements for LIBs, the discharge capacity retained at 346.3 mAh g-1 on the 50th cycle which exhibits NiSe nanoflake is a promising candidate for anode material of LIBs and NIBs.
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