文章基本信息

标题：One-dimensional porous nanofibers of Co3O4 on the carbon matrix from human hair with superior lithium ion storage performance
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作者：Yanli Tan ; Qiuming Gao ; Chunxiao Yang 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
期号：1
DOI：10.1038/srep12382
语种：English
出版社：Springer Nature
摘要：One-dimensional (1D) hierarchical porous nanofibers of Co₃O₄ possessing of (220) facets on the carbon matrix from human hair (H2@Co₃O₄) with 20–30 nm in width and 3–5 μm in length are prepared by a facile solvothermal and calcination approach. The well crystallized small Co₃O₄ particles with the diameter of about 8–12 nm were closely aggregated together in the nanofibers. Electrochemical analyses show that the first discharge capacity of H2@Co₃O₄ electrode is 1368 mAh g⁻¹ at the current density of 0.1 A g⁻¹ based on the total mass of composite. A high reversible capacity of 916 mAh g ⁻¹ was obtained over 100 cycles at 0.1 A g⁻¹, presenting a good cycling stability. When cycled at a high current density of 1 and 2 A g⁻¹, the specific capacity of 659 and 573 mAh g⁻¹ could be still achieved, respectively, indicating a superior power capability.