以L-精氨酸(L-Arginine)为结构导向剂,利用水热法合成由纳米片组装成的分等级β-Ni(OH)_2花状微球。采用XRD、SEM、TEM及N_2吸附脱附对样品的微观结构、表面特性及比表面积进行了表征,深入分析其合成机理,并通过循环伏安、充放电、交流阻抗等测试考察了该电极材料的电化学性能。结果表明,分等级β-Ni(OH)_2花状微球具有优异的电化学电容特性,在电流密度为5 m A/cm~2时,β-Ni(OH)_2的比电容值高达1 048.5 F/g,500圈充放电循环后,其比电容仅衰减了9.2%,可见所制得样品是一种理想的超级电容器电极材料。 The β-Ni (OH) 2 flower-like microspheres assembled by nanosheets were synthesized by hydrothermal method using L-Arginine as the structure-directing agent. The microstructure, surface properties and specific surface area of ​​the samples were characterized by XRD, SEM, TEM and N 2 adsorption-desorption. The synthesis mechanism was further analyzed. The cyclic voltammetry, charge-discharge, The electrochemical performance. The results showed that the fractionated β-Ni (OH) 2 flower-like microspheres had excellent electrochemical capacitance characteristics. The specific capacitance of β-Ni (OH) 2 was as high as 1 at the current density of 5 m A / cm ~ 048.5 F / g, after 500 cycles of charge-discharge cycle, the specific capacitance decayed by only 9.2%, showing that the prepared sample is an ideal supercapacitor electrode material.