The Impact of the Vanadium Oxide Addition on the Physicochemical Performance Stability and Intercalation of Lithium Ions of the TiO2-rGO-electrode in Lithium Ion Batteries

Beata Kurc; Marcin Wysokowski; Łukasz Rymaniak; Piotr Lijewski; Adam Piasecki; Paweł Fuć

doi:10.3390/ma13041018

The Impact of the Vanadium Oxide Addition on the Physicochemical Performance Stability and Intercalation of Lithium Ions of the TiO₂-rGO-electrode in Lithium Ion Batteries

Materials (Basel). 2020 Feb 24;13(4):1018. doi: 10.3390/ma13041018.

Authors

Beata Kurc¹, Marcin Wysokowski², Łukasz Rymaniak³, Piotr Lijewski³, Adam Piasecki⁴, Paweł Fuć³

Affiliations

¹ Institute of Chemistry and Electrochemistry, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965 Poznan, Poland.
² Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965 Poznan, Poland.
³ Institute of Combustion Engines and Transport, Faculty of Transport Engineering, Poznan University of Technology, Piotrowo 3, PL-60965 Poznan, Poland.
⁴ Faculty of Mechanical Engineering and Management, Institute of Materials Science and Engineering, Poznan University of Technology, Jana Pawla II 24, PL-60965 Poznan, Poland.

Abstract

This work determines the effect of the addition of various amounts of vanadium oxide on the work of a cell built from a hybrid V_xO_y-TiO₂-rGO system in a lithium-ion cell. Moreover, a new method based on solvothermal chemistry is proposed for the creation of a new type of composite material combining reduced graphene, vanadium oxide and crystalline anatase. The satisfactory electrochemical properties of VxOy-TiO₂-rGO hybrids can be attributed to the perfect matching of the morphology and structure of VxOy-TiO₂ and rGO. In addition, it is also responsible for the partial transfer of electrons from rGO to VxOy-TiO₂, which increases the synergistic interaction of the VxOy-TiO₂-rGO hybrid to the reversible storage of lithium. In addition a full cell was created LiFePO₄/V_xO_y-TiO₂-rGO. The cell showed good cyclability while providing a capacity of 120 mAh g-¹.

Keywords: anatase; lithium ion batteries; reduced graphene oxide; solvothermal synthesis; vanadium oxide.