A green route N, S-doped hard carbon derived from fruit-peel biomass waste as an anode material for rechargeable sodium-ion storage applications

•N and S doped hard carbon anode (NS-MPC) derived from mango-peels biowastes for Na ion batteries is firstly demonstrated.•In-situ monitoring surface functional of mango-peel wastages via FT-IR analysis.•Heteroatoms doped-hard carbon anode exhibits superior electrochemical performance than un-doped sample.•The NS-MPC anode delivers a reversible discharge capacity of 400 mAh/g at 100 mA/g for 2500 cycles.