In this work, composite of Mo₂C embedded in carbon and decorated on reduced graphene oxide (rGO) was synthesised by simple and inexpensive method followed by reductioncarbonisation for anode material for sodium ion battery. A series of techniques were utilized for structural, morphological and electrochemical characterizations. The electrochemical behaviour of Mo₂C composites as anode materials of sodium ion battery was explored thoroughly. Mo₂C embedded in carbon and decorated on rGO nanosheets (Mo₂C/C/rGO) showed enhanced electrochemical performance in all respects. This unique design of Mo₂C/C/rGO exhibited specific capacity of 498 mAhg^–1 at 50 mAg^–1 current density and it retained 96.4% of its initial capacity after 750 cycles. The added carbon and rGO nanosheets not only enhanced electronic conductivity but also minimized the adverse effect arises due to volume expansion during charging and discharging. The full cell fabricated with this rationally designed anode against NaNi_0.5Mn_0.3Co_0.2O₂ cathode delivered specific capacity of approximately 107 mAhg^–1 at 50 mAg^–1. Theoretical studies disclose that strong interaction between Mo₂C and graphene modifies the band structure and geometrical parameters which facilitates sodium ion movement in the composite. These results shed light on Mo₂C/C/rGO as future potential anode material for sodium ion battery application.