Hierarchical porous CuO nanostructures with tunable properties for high performance supercapacitors

Hierarchical porous CuO nanostructures with tunable properties for high performance supercapacitors
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具有可调性能的分层多孔 CuO 纳米结构可用于高性能超级电容器

DOI:
10.1039/c4ra16924g
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发表时间:
2015-01-01
期刊:
影响因子:
3.9
通讯作者:
Luo, Yongsong
Luo, Yongsong
中科院分区:
化学3区
文献类型:
--
作者:
Lu, Yang;Yan, Hailong;Luo, Yongsong

文献摘要

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我们报告了一种新的,低成本的策略,合成氧化铜(CuO)纳米结构作为高性能的超级电容器电极使用碱性溶液氧化方法。使用不同类型的表面活性剂调节产物的结构、形态特征、表面积和孔径分布。由十二烷基硫酸钠(SDS)得到的CuO电极呈现出最好的电化学性能,这是由于由构成花状纳米结构的纳米叶产生的大表面积和孔体积产生的协同作用。该电极在1 A g(-1)下的比电容为520 F g(-1),在60 A g(-1)下的高倍率电容为405 F g(-1),3500次循环后的库仑效率大于95%。
We report a novel, low-cost strategy to synthesize copper oxide (CuO) nanostructures as high-performance supercapacitor electrodes using an alkaline solution oxidation method. The structure, morphological features, surface area and pore size distribution of the products are tuned using different types of surfactants. The CuO electrode obtained from sodium dodecyl sulfate (SDS) presents the best electrochemical performance due to the synergies arising from the large surface area and pore volume created by the ultrathin nanoleaves constituting the flower-shape nanostructure. The electrode delivers a remarkable specific capacitance of 520 F g(-1) at 1 A g(-1) and a high rate capacitance of 405 F g(-1) at 60 A g(-1) with more than 95% Coulombic efficiency after 3500 cycles.