PPy coated on SiO2 encapsulated porous carbon nanofibers as a potential anode material for high rate capable and long-life Li-ion battery

•Electrospinning and pyrolysis process for electrospun PPy/CNF-SiO2 material.•Fibrous morphology obtained for PPy/CNF-SiO2 material.•Composite anode prevents the lithium dendritic and provide stable SEI formation.•It gives a high specific discharge capacity of 1070 mA h g−1.•PPy/CNF-SiO2 anode exhibits 100% capacity retention.