The maximum discharge capacity of the hydrogen storage capacity in mwnt with 10 - 30nm , 60 - 100nm and less than 10nm in diameter was 318 . 9ma h / g , 550 . 6ma h / g and 1361 . 1ma h / g , responding to respective estimated as 1 . 12wt % , 1 . 93wt % and 4 . 77wt % . the ransmission electron microscopy ( tem ) results show that cnts that were oxided are pure and some of tube wall are open end . the scanning electron microscopy ( sem ) results show that cnts in the electrodes prepared by composite electrochemical deposit method are embedded in the matrix uniformly and one side of which protrudes out of the surface 在制备工作电极的基础上研究了纳米碳管的电化学储氢性能，发现铜不适合做电池的集流体；外径为10 - 30纳米、 60 - 100nm以及外径为小于10nm的碳管最大放电容量为318 . 9ma ? h g 、 550 . 6ma ? h g和1361 . 1ma ? h g ，相当于质量储氢量分别为1 . 12wt 、 1 . 93wt和4 . 77wt ；透射电镜观察的结果表明，经过氧化法纯化的碳管较为纯净，且有的端口被打开；扫描电镜观察的结果表明，在复合电沉积制备的电极中纳米碳管较均匀地镶嵌于基体中，并且端头露出覆盖于基体表面；拉曼光谱结果表明纳米碳管可以进行化学储氢。
