High capacitive performance of nanostructured Mn–Ni–Co oxide composites for supercapacitor
High capacitive performance of nanostructured Mn–Ni–Co oxide composites for supercapacitor
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DOI：
10.1016/j.materresbull.2007.06.006
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发表时间：
2008-05
影响因子：
5.4
通讯作者：
Jianmin Luo;Bo Gao;Xiaogang Zhang
中科院分区：
文献类型：
--
作者：
Jianmin Luo;Bo Gao;Xiaogang Zhang
通过热分解由 Mn、Ni 和 Co 盐化学共沉淀获得的前驱体制备纳米结构的 Mn-Ni-Co 氧化物复合材料（MNCO）。通过X射线衍射（XRD）、能谱（EDS）和扫描电子显微镜（SEM）对化学成分和形貌进行表征。通过循环伏安法、阻抗和恒电流充放电测量来检查 MNCO 电极的电化学电容。结果表明，MNCO电极表现出良好的电化学特性。在6molL−1KOH电解液中，相对于饱和甘汞电极（SCE），在-0.1至0.4V电位范围内可以获得1260Fg−1的最大电容值。
Nanostructured Mn–Ni–Co oxide composites (MNCO) were prepared by thermal decomposition of the precursor obtained by chemical co-precipitation of Mn, Ni and Co salts. The chemical composition and morphology were characterized by X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM). The electrochemical capacitance of MNCO electrode was examined by cyclic voltammetry, impedance and galvanostatic charge–discharge measurements. The results showed that MNCO electrode exhibited the good electrochemical characteristics. A maximum capacitance value of 1260Fg−1could be obtained within the potential range of −0.1 to 0.4V versus saturated calomel electrode (SCE) in 6molL−1KOH electrolyte.