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چکیده
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One of the effective methods for storing hydrogen in solid form is electrochemical storage, which is performed under ambient temperature and pressure conditions. This method especially provides stable and effective performance for porous materials. In this research, using hydrazine as a new reactant, CeVO4/rGO nanocomposite was fabricated via one-step sonochemical approach. With the help of hydrazine, not only the unwanted growth of cerium vanadate nanoparticles was limited, but also the possibility of one-step synthesis and reduction of graphene oxide (GO) to reduced graphene oxide (rGO) was easily provided. The obtained nanocomposite was analyzed by EDS, BET, FTIR, XRD, and FESEM. Also, the FESEM images confirm that the fine rod nanoparticles were formed using ultrasonic radiation and dispersed on the wrinkled sheets of reduced graphene oxide in one step. CeVO4/rGO nanocomposite was utilized for the electrochemical hydrogen storage by the chronopotentiometry method. The discharge capacity of CeVO4/rGO nanocomposite was nearly 4929 mAh/g, that is remarkable compared to the storage capacity of CeVO4 nanoparticles (4087 mAh/g).
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