ABSTRACT

Ni_1-xCo_xO_1-δ (Where x = 0.01, 0.03, 0.05, 0.07, 0.09) (CNO) based nanostructured materials were synthesized by facile soft chemical route and characterised for application as electrodes in electrochemical supercapacitors. The prepared materials were studied by XRD, FITR, particle size, EDAX equipped with SEM, TEM and electrochemical studies such as CV, GCD and impedance analysis. XRD has confirmed the presence of the FCC crystalline structure. FTIR results have shown peaks at ~450 cm⁻¹ which are relevant to metal oxide. The existence of nanosized particles were confirmed by particle size measurements. SEM analysis has further shown the appearance of spherical-shaped particles with average grain size ranging from 19.7 to 37.74 nm in the samples. The EDAX data has reflected the occurrence of appropriate elements as per stoichiometry calculations. The TEM analysis carried-out on Ni_0.91Co_0.09O_1-δ has confirmed the presence of polycrystalline behaviour. Among the samples, Ni_0.91Co_0.09O_1-δ electrode material has achieved more capacitance (338.13Fg⁻¹).

摘要

Ni _1-x Co _x O _1-δ  (其中 x = 0.01, 0.03, 0.05, 0.07, 0.09) (CNO) 基纳米结构材料通过简便的软化学途径合成并表征为用作电化学超级电容器的电极。通过XRD、FITR、粒度、配备SEM的EDAX、TEM和电化学研究如CV、GCD和阻抗分析对制备的材料进行了研究。XRD 已经证实了 FCC 晶体结构的存在。^{FTIR 结果显示在~450 cm -1}处有峰值 与金属氧化物有关。纳米尺寸颗粒的存在通过颗粒尺寸测量得到证实。SEM 分析进一步显示了样品中平均粒径为 19.7 至 37.74 nm 的球形颗粒的外观。根据化学计量计算，EDAX 数据反映了适当元素的出现。_{对 Ni 0.91} Co _0.09 O _1-δ进行的 TEM 分析 证实了多晶行为的存在。在样品中，Ni _0.91 Co _0.09 O _1-δ 电极材料实现了更大的电容（338.13Fg ^-1）。