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MNi4.8Sn0.2(M=La, Nd)-supported multi-walled carbon nanotube composites as hydrogen storage materials

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  • Physical Chemistry
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Chinese Science Bulletin

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.

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Authors and Affiliations

  1. College of Chemistry, South China University of Technology, Guangzhou, 510641, China

    Ren JianWei, Liao ShiJun & Liu JunMin

Authors
  1. Ren JianWei
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  2. Liao ShiJun
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  3. Liu JunMin
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Corresponding author

Correspondence to Liu JunMin.

Additional information

Supported by the National Natural Science Foundation of China (Grant No. 20476034) and Guangdong Provincial Scientific Foundation

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Ren, J., Liao, S. & Liu, J. MNi4.8Sn0.2(M=La, Nd)-supported multi-walled carbon nanotube composites as hydrogen storage materials. CHINESE SCI BULL 52, 1616–1622 (2007). https://doi.org/10.1007/s11434-007-0242-9

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  • DOI: https://doi.org/10.1007/s11434-007-0242-9

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