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TiO 2 -reduced graphene oxide (RGO) composite was synthesized via a sol-gel process and investigated as an anode material for sodium-ion batteries (SIBs). A remarkable improvement in sodium ion storage with a reversible capacity of 227 mAh g −1 after 50 cycles at 50 mA g −1 is achieved, compared to that (33 mAh g −1 ) for TiO 2 . The enhanced electrochemical performance of TiO 2 -RGO composite is attributed to the larger specific surface area and better electrical conductivity of TiO 2 -RGO composite. The excellent performance of TiO 2 -RGO composite enables it a potential electrode material for SIBs.

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