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Hierarchical architectures of Co3O4 ultrafine nanowires grown on Co3O4 nanowires with fascinating electrochemical performance

机译:在Co3O4纳米线上生长的Co3O4超细纳米线的分层体系结构,具有出色的电化学性能

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摘要

A facile method to synthesize hierarchical architectures of Co3O4 nanowires@Co3O4 ultrafine nanowires grown on Ni foam was developed here. The unique architectures consisting of numerous ultrafine Co3O4 nanowires (shell) well grown on the surface of a Co3O4 nanowire (core) delivered remarkable electrochemical performance with ultrahigh specific capacitance (1640 F g(-1) at a current density of 2 mA cm(-2)), superior rate capability (66% retention of the initial capacitance from 2 mA cm (2) to 50 mA cm(-2)) and outstanding cycling stability (similar to 99.03% retention of the initial capacitance after 10 000 cycles). Such fascinating capacitive behaviors can make these hierarchical architectures of Co3O4 nanowires@Co3O4 ultrafine nanowires promising electrode materials in electrochemical applications.
机译:在此开发了一种简便的方法来合成在镍泡沫上生长的Co3O4纳米线@ Co3O4超细纳米线的层次结构。独特的架构由在Co3O4纳米线(核)表面上生长良好的许多超细Co3O4纳米线(壳)组成,具有卓越的电化学性能,在2 mA cm(- 2)),优异的倍率能力(从2 mA cm(2)到50 mA cm(-2)保留66%的初始电容)和出色的循环稳定性(类似于1万次循环后保留99.03%的初始电容) 。这种令人着迷的电容行为可以使Co3O4纳米线@ Co3O4超细纳米线的这些分层体系结构在电化学应用中有望成为电极材料。

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