Graphene and Carbon Nanotubes Fibrous Composite Decorated with PdMg Alloy Nanoparticles with Enhanced Absorption–Desorption Kinetics for Hydrogen Storage Application

Nanomaterials

Mohammad Aslam¹  Numan Salah²  Saeed Aissan³  Ahmed Al-Ghamdi³  Bassim Arkook³  El-Sayed Shalaan³  Ahmed Alshahrie³  Akihisa Inoue³  Ashwaq Al-Ojeery³ 

[1] Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah 21589, Saudi Arabia;Center of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia;Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;

关键词: hydrogen storage;    carbon nanotubes;    nanomaterials;    thin films;   

DOI  :  10.3390/nano11112957

来源: DOAJ

【 摘 要 】

We describe a graphene and fibrous multiwall carbon nanotubes (f-MWCNT) composite film prepared by plasma-enhanced chemical vapor deposition for use as a suitable and possible candidate of hydrogen storage materials. A high storage capacity of 5.53 wt% has been obtained with improved kinetics. The addition of binary PdMg alloy nanoparticles to the surface of graphene-fibrous nanotubes composite films raised the storage capacity by 53% compared to the film without PdMg decorated nanoparticles. Additionally, the graphene/f-MWCNT composite film decorated with PdMg nanoparticles exhibited an enhanced hydrogen absorption–desorption kinetics. The fibrous structure of the MWCNTs, alongside graphene sheets within the film, creates an enormous active region site for hydrogen reaction. The addition of PdMg nanoparticles enhanced the reaction kinetics due to the catalytic nature of Pd, and increased the hydrogen content due to the high absorption capacity of Mg nanoparticles. The combination of Pd and Mg in a binary alloy nanoparticle enhanced the hydrogen capacity and absorption–desorption kinetics.

【 授权许可】

Unknown