Facile synthesis of hierarchical Ni3Se2 nanodendrite arrays for supercapacitors
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第19期
论文作者：Licheng Zhao Ping Zhang Yanan Zhang Zhi Zhang Lei Yang Zhi-Gang Chen
文章页码：69 - 76
摘 要：Rational design has been widely used to develop high-performance metal selenides-based electrode materials for supercapacitors. In this study, we develop a facile one-step solvothermal approach to synthesize binder-free Ni3Se2 nanodendrite arrays grown on nickel foam as advanced positive electrodes for supercapacitors. Our Ni3Se2 nanodendrite arrays on nickel foam exhibit a specific capacitance of 1234 Fg-1(3.70 F cm-2) at a current density of 1 Ag-1 and a great rate capability, which is benefited from the excellent electrical conductivity and unique hierarchical nano-dendritic structure. Furthermore, an asymmetric supercapacitor device was assembled using activated carbon as the negative electrode and the Ni3Se2 nanodendrite arrays on nickel foam as the positive electrode, obtaining a high energy density of 22.3 W h kg-1 at a power density of 160.4 W kg-1.
Licheng Zhao1，Ping Zhang1，Yanan Zhang2，Zhi Zhang2，Lei Yang1，Zhi-Gang Chen3
1. School of Materials Science & Engineering, Sichuan University2. Center for Nanoscale Characterization & Devices (CNCD), School of Physics & Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST)3. Centre for Future Materials, University of Southern Queensland
摘 要：Rational design has been widely used to develop high-performance metal selenides-based electrode materials for supercapacitors. In this study, we develop a facile one-step solvothermal approach to synthesize binder-free Ni3Se2 nanodendrite arrays grown on nickel foam as advanced positive electrodes for supercapacitors. Our Ni3Se2 nanodendrite arrays on nickel foam exhibit a specific capacitance of 1234 Fg-1(3.70 F cm-2) at a current density of 1 Ag-1 and a great rate capability, which is benefited from the excellent electrical conductivity and unique hierarchical nano-dendritic structure. Furthermore, an asymmetric supercapacitor device was assembled using activated carbon as the negative electrode and the Ni3Se2 nanodendrite arrays on nickel foam as the positive electrode, obtaining a high energy density of 22.3 W h kg-1 at a power density of 160.4 W kg-1.
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