Electrochemical synthesis of MnO2 porous nanowires for flexible all-solid-state supercapacitor
Electrochemical synthesis of MnO2 porous nanowires for flexible all-solid-state supercapacitor
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电化学合成用于柔性全固态超级电容器的MnO2多孔纳米线
DOI:
10.1039/c6nj04118c
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发表时间:
2017-05
影响因子:
3.3
通讯作者:
Yuge Liu
中科院分区:
文献类型:
--
作者:
Juan Song;Yuge Liu
MnO2 porous nanowires were prepared with an Au-coated polycarbonate membrane as the template via a simple electrodeposition method. The obtained film could be used directly as a flexible all-solid-state supercapacitor electrode. The structures of the final product were characterized by various characterization techniques including scanning electron microscopy (SEM), X-ray diffraction (XRD), FT-IR spectra, and X-ray photoelectron spectroscopic (XPS). The electrochemical results showed that MnO2 porous nanowire-based electrode materials had high capacitive performances. The areal capacitance of the prepared supercapacitor with a MnO2 deposition time of 200 s was 44.6 mF cm−2. Under different bending conditions, the areal capacitance of the supercapacitor still remained at 90.5%, indicating the highly flexible property. Furthermore, it nearly remained at 89.6% of its initial capacitive value after 2000 cycles at a current density of 0.4 mA cm−1, showing its excellent cycle stability. However, the prepared supercapacitor can power a light-emitting-diode (LED) to meet practical applications for micro-power supplies.
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