首页 | 本学科首页   官方微博 | 高级检索  
     

MNi4.8Sn0.2(M=La, Nd)-supported multi-walled carbon nanotube composites as hydrogen storage materials
引用本文:REN JianWei LIAO ShiJun LIU JunMin. MNi4.8Sn0.2(M=La, Nd)-supported multi-walled carbon nanotube composites as hydrogen storage materials[J]. 科学通报(英文版), 2007, 52(12): 1616-1622. DOI: 10.1007/s11434-007-0242-9
作者姓名:REN JianWei LIAO ShiJun LIU JunMin
作者单位:College of Chemistry, South China University of Technology, Guangzhou 510641, China
基金项目:Supported by the National Natural Science Foundation of China (Grant No. 20476034) and Guangdong Provincial Scientific Foundation
摘    要:Two composites LaNi4.8Sn0.2/CNTs and NdNi4.8Sn0.2/CNTs were prepared by an impregnation-reduction method. Their hydrogen storage capacity could reach up to 2.96 wt% and 2.88 wt% respectively at room temperature and 1.0 MPa pressure. These values, which might result from the synergetic effect between the alloy nanoparticles and the pretreated CNTs, were three times higher than those of the unsupported MNi4.8Sn0.2 (M=La, Nd) alloys under the same conditions. XRD and TEM revealed that the alloy particles were uniformly dispersed on the CNTs and the average particle size was ca. 30 nm. The composites also showed good stability and the hydrogen storage capacity decreased by less than 6% after 100 adsorption-desorption cycles. Moreover, no noticeable change in crystalline structure was observed for the composites.

关 键 词:储氢材料 碳纳米管 稀土金属元素 镍 锡
收稿时间:2006-11-21
修稿时间:2006-11-212007-01-23

MNi4.8Sn0.2(M=La,Nd)-supported multi-walled carbon nanotube composites as hydrogen storage materials
Ren JianWei,Liao ShiJun,Liu JunMin. MNi4.8Sn0.2(M=La,Nd)-supported multi-walled carbon nanotube composites as hydrogen storage materials[J]. Chinese science bulletin, 2007, 52(12): 1616-1622. DOI: 10.1007/s11434-007-0242-9
Authors:Ren JianWei  Liao ShiJun  Liu JunMin
Affiliation:(1) College of Chemistry, South China University of Technology, Guangzhou, 510641, China
Abstract:Two composites LaNi4.8Sn0.2/CNTs and NdNi4.8Sn0.2/CNTs were prepared by an impregnation-reduction method. Their hydrogen storage capacity could reach up to 2.96 wt% and 2.88 wt% respectively at room temperature and 1.0 MPa pressure. These values, which might result from the synergetic effect between the alloy nanoparticles and the pretreated CNTs, were three times higher than those of the unsupported MNi4.8Sn0.2 (M=La, Nd) alloys under the same conditions. XRD and TEM revealed that the alloy particles were uniformly dispersed on the CNTs and the average particle size was ca. 30 nm. The composites also showed good stability and the hydrogen storage capacity decreased by less than 6% after 100 adsorption-desorption cycles. Moreover, no noticeable change in crystalline structure was observed for the composites.
Keywords:hydrogen storage   multi-walled carbon nanotubes   rare earth element   nanoparticle
本文献已被 CNKI 维普 SpringerLink 等数据库收录!
点击此处可从《科学通报(英文版)》浏览原始摘要信息
点击此处可从《科学通报(英文版)》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号