每周分享

每周分享：Facile synthesis of nanographene sheet hybrid α-MnO2 nanotube and nanoparticle as high performance electrode materials for supercapacitorl。

今天给大家分享的是2015年6月份 《Journal of Alloys and Compoundsl》上发表的一篇名为：Facile synthesis of nanographene sheet hybrid α-MnO2 nanotube and nanoparticle as high performance electrode materials for supercapacitor。

文章摘要如下：

We have synthesized nanographene sheet (NGs) hybrid α-MnO2 nanotube (MTGs) and α-MnO2 nanoparticle (MPGs) by a joint method of burn-quench and hydrothermal. The NGs are prepared by directly reverting CO2 through a burn-quench method. The results indicate that these nano-carbons can easily react with KMnO4 to produce MPGs even at 40 °C and MTGs at 140 °C, respectively. The electrochemical measurements show the MTGs and MPGs have excellent electrochemical properties as supercapacitor electrode materials. The specific capacitance values for the MPGs and MTGs can get up to about 171.3 and 290.6 F g?1 at current density of 1 A g?1 in 1 M Na2SO4 electrolyte, respectively. Moreover, after 3000 cycles at a rate of 1 A g?1, the corresponding specific capacitances are 150.6 F g?1 for MPGs and 265.4 F g?1 for MTGs materials, which reveals the good retention of capacity upon cycling.

该文章中材料表征采用的是美国麦克仪器ASAP 2460

详情可参考下面链接：

http://www.sciencedirect.com/science/article/pii/S0925838815005083