文章基本信息

标题：Hierarchically Structured Co₃O₄@Pt@MnO₂ Nanowire Arrays for High-Performance Supercapacitors
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作者：Hui Xia ; Dongdong Zhu ; Zhentao Luo 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2013
卷号：3
DOI：10.1038/srep02978
出版社：Springer Nature
摘要：Here we proposed a novel architectural design of a ternary MnO₂-based electrode – a hierarchical Co₃O₄@Pt@MnO₂ core-shell-shell structure, where the complemental features of the three key components (a well-defined Co₃O₄ nanowire array on the conductive Ti substrate, an ultrathin layer of small Pt nanoparticles, and a thin layer of MnO₂ nanoflakes) are strategically combined into a single entity to synergize and construct a high-performance electrode for supercapacitors. Owing to the high conductivity of the well-defined Co₃O₄ nanowire arrays, in which the conductivity was further enhanced by a thin metal (Pt) coating layer, in combination with the large surface area provided by the small MnO₂ nanoflakes, the as-fabricated Co₃O₄@Pt@MnO₂ nanowire arrays have exhibited high specific capacitances, good rate capability, and excellent cycling stability. The architectural design demonstrated in this study provides a new approach to fabricate high-performance MnO₂–based nanowire arrays for constructing next-generation supercapacitors.