A facile method to improve the high rate capability of Co3O4 nanowire array electrodes
A facile method to improve the high rate capability of Co3O4 nanowire array electrodes
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DOI：
10.1007/s12274-010-0063-z
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发表时间：
2010-12-01
期刊：
影响因子：
9.9
通讯作者：
Li, Yang Yang
中科院分区：
文献类型：
--
作者：
Cheng, Hua;Lu, Zhou Guang;Li, Yang Yang
对于超级电容器和锂离子电池中使用的电极材料来说，快速充电和快速放电的能力是非常理想的。在本文中，我们报告了一种简单的策略，通过银镜反应将银纳米粒子均匀地加载到Co3O4纳米线表面，从而大大提高了Co3O4纳米线阵列电极的高速率性能。高导电性的银纳米颗粒作为电子在电流收集器（Ti衬底）和Co3O4活性材料之间快速传输的网络。通过这种简单的方法，实现了高容量和显著的速率能力。这种新型Co3O4-Ag复合纳米线阵列电极在伪超级电容器和锂离子电池中具有很大的实际应用潜力。
The capability of fast charge and fast discharge is highly desirable for the electrode materials used in supercapacitors and lithium ion batteries. In this article, we report a simple strategy to considerably improve the high rate capability of Co3O4 nanowire array electrodes by uniformly loading Ag nanoparticles onto the surfaces of the Co3O4 nanowires via the silver-mirror reaction. The highly electrically conductive silver nanoparticles function as a network for the facile transport of electrons between the current collectors (Ti substrates) and the Co3O4 active materials. High capacity as well as remarkable rate capability has been achieved through this simple approach. Such novel Co3O4-Ag composite nanowire array electrodes have great potential for practical applications in pseudo-type supercapacitors as well as in lithium ion batteries.