The silicon-based materials are promising candidates for lithium-ion batteries owing to their high energy density.However,achieving long lifespan under realistic conditions remains a challenge because of the volume expansion and low conductivity.In this work,the highly elastic cobweb-like composite materials consisted by SiO and nanofibers are designed and fabricated for high-efficient lithium storage by ball-milling & electrostatic spinning method.The reconstructed heterostructure and highly elastic nanofibers can simultaneously increase the conductivity and inhibit the "expansion effect" of silicon-based materials.The constructed electrode of n-SiO/CNF delivers an initial capacity of 1700 mAh/g,and maintains the capacities over 1000mAh/g after 100 cycles at the current density of 500 mA/g.Meanwhile,this electrode can give an initial coulombic efficiency over 85% and maintains at 98% in the following charge/discharge processes.Furthermore,it exhibits efficient long-term electrochemical performance,maintaining the capacity at about 1000 mAh/g at a high current density of 1000 mA/g after 1000 cycles.This work could provide a promising strategy for enhancing the performance of silicon-based composite materials for practical application in lithium-ion batteries.