论文部分内容阅读
报道了一种基于含锌(Ⅱ)有机配位聚合物制备微孔碳的新方法.通过锌离子和酒石酸之间的配位作用获得含锌有机配位化合物,并通过氢键作用将其引入到间苯二酚/甲醛低聚物溶胶的开放网络结构中.使含锌有机配位化合物和酚醛低聚物溶胶体系发生共聚反应得到酚醛和含锌有机配位共聚物,在950℃下热处理分解以及锌蒸气蒸发后制得微孔碳.微孔碳材料典型样品具有相对较大以及比较规则的微孔,其比表面积可以达到1260m2·g-1,孔体积为0.63cm3·g-1.所得微孔碳作为超级电容器电极材料的等效串联电阻为0.46Ω,其循环伏安曲线展示出较好的矩形性.恒流充放电分析结果表明,当电流密度为1A·g-1时,微孔碳电极的比电容为196F·g-1;在10A·g-1的大电流密度下,比电容仍然达到137F·g-1.该电极具有优良的循环稳定性,1000次循环后比电容保持率达到98%.这一研究结果表明,所得微孔碳在超级电容器电极材料方面具有重要的应用前景.
A new method for preparing microporous carbons based on organic coordination polymers containing zinc (Ⅱ) has been reported. Zinc-containing organic coordination compounds are obtained through the coordination between zinc ions and tartaric acid and introduced into To the open network structure of the resorcinol / formaldehyde oligomer sol.The copolymerization of the zinc-containing organic coordination compound and the phenolic oligomer sol system was carried out to obtain a phenolic and zinc-containing organic coordination copolymer which was heat-treated at 950 ° C. Decomposition and vaporization of zinc vapor to produce microporous carbon.The typical samples of microporous carbon materials have relatively large and relatively regular micropores, the specific surface area can reach 1260m2 · g-1 and the pore volume is 0.63cm3 · g-1. The equivalent series resistance of the resulting microporous carbon as a supercapacitor electrode material was 0.46Ω, and its cyclic voltammetry curve showed good rectangularity. The results of constant current charge-discharge analysis showed that when the current density was 1A · g-1, The specific capacitance of the microporous carbon electrode is 196F · g-1, and the specific capacitance of the microporous carbon electrode reaches 137F · g-1 at the high current density of 10A · g-1. The electrode has excellent cycle stability after 1000 cycles Capacitance retention rate of 98%. The results of this study show that the resulting microporous It has important application prospect in the super capacitor electrode material.