CeVO4/rGO nanocomposite: facile hydrothermal synthesis, characterization, and electrochemical hydrogen storage

• Published in: Applied physics. A, Materials science & processing Vol. 129; no. 1
• Main Authors: Rezayeenik, Mahsa, Mousavi-Kamazani, Mehdi, Zinatloo-Ajabshir, Sahar
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.01.2023; Springer Nature B.V
• Subjects: Applied physics; Cerium compounds; Characterization and Evaluation of Materials; Chemical synthesis; Condensed Matter Physics; Electrochemical analysis; Graphene; Hydrazines; Hydrogen storage; Machines; Manufacturing; Materials science; Nanocomposites; Nanoparticles; Nanotechnology; Optical and Electronic Materials; Physics; Physics and Astronomy; Processes; Storage capacity; Surfaces and Interfaces; Synergistic effect; Thin Films; Rod-like nanoparticles; Hydrogen storage; rGO; CeVO; Hydrothermal; Electrochemical
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-022-06325-y

In this paper, with the aim of improving hydrogen storage efficiency, cerium vanadate/reduced graphene oxide (CeVO 4 /rGO) nanocomposite was synthesized through a one-step hydrothermal method due to its unique characteristics, including suitable electrochemical behavior, high specific surface area, and high porosity. In addition to controlling the growth of CeVO 4 nanoparticles, hydrazine reduces graphene oxide (GO) to reduced graphene oxide (rGO) and enables one-step synthesis. FESEM images showed that the rod-like CeVO 4 nanoparticles were dispersed on the graphene plates. According to the obtained storage results, with the addition of graphene, the synergistic effect between the layers has increased and, as a result, the hydrogen storage capacity has increased. The highest amount of electrochemical storage of hydrogen in the synthesized nanocomposite was about 5430 mAh/g, which is a significant result compared to other nanostructures used.