国产精品视频一区二区三区四,亚洲av美洲av综合av,99国内精品久久久久久久,欧美电影一区二区三区电影

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

今天給大家分享的是2015年6月份 《Journal of Alloys and Compoundsl》上發(fā)表的一篇名為：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.

該文章中材料表征采用的是美國麥克儀器ASAP 2460

詳情可參考下面鏈接：

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