多壁纳米碳管电化学储氢研究
首发时间:2006-09-07
摘要:为探究多壁纳米碳管(MWNT)的储氢性能,用复合电沉积的方法制备了含MWNT的纳米碳管-镍(CNT-Ni)工作电极,通过恒流充放电、循环伏安以及循环寿命手段研究了工作电极的电化学储氢,结果发现直径小于10nm的MWNT的放电能力为1361.1mAh/g,相当于储氢量为4.77Wt%(质量)。CNT-Ni电极的氢吸附发生在该电极表面的镍活性点上。电极有一定的循环寿命。指出多壁纳米碳管有一定储氢能力,储氢机理有待进一步研究。
关键词: 复合电沉积 纳米碳管 电化学储氢
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Study on Electrochemical hydrogen Storage of Multi-walled Carbon Nanotubes
Abstract: In order to study the capacity of hydrogen storage of multi-walled carbon nanotubes(MWNT), A Nickel(Ni)-carbon nanotubes electrode containing MWNT was prepared by composite electrodeposit method, on the basis of which electrochemical hydrogen storage of the electrode by the methods of charge and discharge of constant current, cyclic volt-ampere and Cyclic lifespan was studied. The result showed a high electrochemical discharging capacity of MWNT with less than 10mn diameter up to 1361.1mAh/g, which corresponds to a hydrogen storage capacity of 4.77wt%. The hydrogen adsorption peak of CNT-Ni electrode may happen at the active points of Ni in the surface of it. The electrode has some cyclic lifespan. That MWNT can storage hydrogen and the theory of hydrogen storage of MWNT needed to be studied were pointed .
Keywords: Carbon nanotubes Composite Electrodeposit Electrochemical Hydrogen Storage
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No.8243759231157604****
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