碳纳米管的电化学储氢  

Electrochemical Study on Hydrogen Storage Property of CNTs

作　　者：郭连权[1] 马常祥[1] 张玉洁[2] 王帅[2] 

机构地区：[1]东北大学理学院,辽宁沈阳110004 [2]沈阳工业大学理学院,辽宁沈阳110023

出　　处：《东北大学学报（自然科学版）》2004年第5期427-430,共4页Journal of Northeastern University(Natural Science)

基　　金：辽宁省教育厅科学研究计划资助项目(202063314)

摘　　要：用电化学方法使碳纳米管储氢,是把碳纳米管当作储氢负极,形成Ni MH电池·用碳纳米管与镍纳米粉做成负极试样,电解液采用KOH溶液·实验中,对Ni MH电池充放电的50个循环进行测试,通过测量电池的充放电容量和能量,来测量碳纳米管的储氢性能·测试过程由Arbin公司的BF 2043系列电池测试系统控制·实验表明,相对每克碳纳米管,当充电电流为120mA时,电池容量可达126 368mA·h·g-1,而且电池放电非常平稳,放电平台利用率高达97%·可见,碳纳米管是一种很有前途的储氢材料·本研究对利用碳纳米管制做储氢电池提供了实验依据·An electrochemical process was conducted to store hydrogen in CNTs (carbon nanotubes), where the CNTs were used as the cathode of Ni-MH cells. In the experiment the CNTs and Ni-nanopowder were taken as sample cathode with KOH solution as electrolyte. With 50 charge-discharge cycles tested for the Ni-MH cells to measure their charge/discharge capacity and power, the hydrogen storage property of CNTs was determined on an Arbin BF-2043 series battery testing system to control the testing procedure. Experimental results showed that when the charging current into a gram of CNTs is 120 mA, the discharge capacity will be 126386 mA·h·g^(-1)with a stable discharging process available to provide a utilization rate up to 97%.It is evident that CNTs is indeed a kind of challenging material for hydrogen storage, and the experiment can provide an experimental reference for preparing hydrogen storage cells made from CNTs.

关 键 词：碳纳米管 电化学 化学电池 Ni—MH电池 储氢材料 

分 类 号：O73[理学—晶体学] O799