【摘要】 综述了近年来研究人员在碳纳米管制备、预处理、以及在各种不同条件下获得的储氢性能,分析了碳纳米管的储氢机理。结果表明,碳纳米管储氢是吸附作用的结果,指出对碳纳米管储氢行为的本质究竟是物理吸附还是化学吸附,或是两种吸附共存还存在争议。同时,通过分析储氢测试方法和试验装置对储氢结果的影响,表明无论是通过吸放氢前后的压力变化来表征储氢性能,还是通过吸放氢时的重量变化来反映材料的储氢特性,目前的测试方法和装置都存在一定的缺陷,会对测试结果造成不同程度的影响。指出了碳纳米管今后研究的方向,在重点研究碳纳米管储氢的机制的同时,建议建立统一的测试标准和方法,并实现交叉测试,确保实验结果的可靠性和精确性。更多还原

【Abstract】 Fabricating methods,pre-treatment processes and hydrogen storage properties of the carbon nanotubes(CNT) are reviewed in the paper.The hydrogen storage mechanism of CNT is analyzed emphatically.The analysis shows that hydrogen storage of CNT results from adsorption of hydrogen in CNT,however,it is still a controversial question whether the adsorption mechanism is physical one,chemical one or both of them.Meanwhile,the effects of testing methods and apparatus of hydrogen storage properties are also analyzed.The results indicate both the constant volume method and thermogravimetry analysis method have some flaws,which will induce error into experimental results.Finally,the author points out the research direction and suggests that the emphasis should be put on research of hydrogen storage mechanism of CNT and uniform testing standard and method should be established in order to ensure the reliability and accuracy of testing results.更多还原