锌铝水滑石材料的合成及其电化学性能

Fabricaiton and Electrochemical Properties of ZnAl-LDHs Materials

采用一步原位水热方法,制备了泡沫Ni负载的锌铝基水滑石(ZnAl-LDHs)复合电极材料.采用扫描电子显微镜、X射线衍射、红外光谱等手段对产物的形貌和结构进行了研究.实验结果表明,原位水热法合成的ZnAl-LDHs为正六边形片状结构,直径约为300~500 nm,厚度约为10~30 nm.三电极体系电化学测试,电极呈现典型赝电容性质,电流密度为0. 5 A/g时,原位有序生长ZnAl-LDHs的比电容为84. 9 F/g,是共沉淀合成电极的2. 4倍.

ZnAl layered double hydroxides materials（ZnAl-LDHs） were prepared by a novel one-step in-situ hydrothermal method. The morphology and structure of the product were studied by SEM,XRD and IR. The results showed that ZnAl-LDHs synthesized by 120℃ hydrothermal method presented a regular hexagonal structure with a diameter of 300 - 500 nm and a thickness of 10-30 nm. The electrochemical test of the threeelectrode system showed that the electrode presented typical pseudo capacitance properties. The specific capacitance of in-situ ordered growth of ZnAl-LDHs was 84. 9 F/g,2. 4 times higher than that of the coprecipitation product.