聚丙烯腈基活性炭銅摻雜材料的制備及其電容性能
[Abstract]:Polyacrylonitrile is a common active carbon precursor. Copper-doped activated carbon was prepared from polyacrylonitrile (pan) by chemical complexing method. The preparation is mainly divided into three steps: (1) the nitrile group in the polyacrylonitrile is functionalized by hydroxylamine to form a light yellow oximation product containing a large amount of hydroxyl and amino groups, (2) the copper ion and the oxime group compound, (3) the complex was carbonized at high temperature to form copper-doped activated carbon. This method does not directly doping activated carbon, but through the functionalization of raw material polyacrylonitrile to make it complex with copper ion in aqueous solution, so as to ensure the effectiveness of the activated carbon raw materials doped metal. Copper doped polyacrylonitrile was chemically activated to obtain copper doped activated carbon. The cyclic voltammetry and charge-discharge tests showed that the capacitance of the doped metal increased from 208.3 F / g to 289.7 F / g (0.5 Ag), and the capacitance increased about 40%. However, the cyclic property of the doped copper decreases to a certain extent, which may be due to the irreversible redox reaction of the doped copper, which leads to the decline of the relative cyclic stability of the doped copper.
【作者單位】: 聚合物分子工程國(guó)家重點(diǎn)實(shí)驗(yàn)室復(fù)旦大學(xué)高分子科學(xué)系;上海市分子催化和功能材料重點(diǎn)實(shí)驗(yàn)室復(fù)旦大學(xué)化學(xué)系;
【基金】:國(guó)家科技部“973”,“863”基金(Nos.2008AA032102,2011CB605701)資助~~
【分類號(hào)】:TQ127.11;TM53
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