Porous Reduced Graphene Oxide/carbon Nanotube/tin Oxide Aerogel Fiber Electrode for High-Performance Wire Shaped Lithium Ion Battery

Carbon-based fibers have received sufficient attentions and acquired extensive success in wearable energy storage devices on account of excellent conductivity, porous structure and outstanding flexibility. Herein, hierarchically porous reduced graphene oxide (rGO)/carbon nanotube (CNT) /SnO2 (GCS) aerogel fiber was fabricated via freeze-drying treatment followed wet spinning method. Moreover, owing to the porous structure, high conductivity and synergistic effect, the proof-of-concept GCS fiber-based lithium-ion battery possesses affirmative mass capacitance (1053.4 mA h/g at 0.1 A g- 1), rate performance (357.7 mA h/g at 5 A g- 1) and long-term cycling stability (553.4 mAh/g capacity retention for 500 cycles at 2 A g- 1), which provides a booming future in the preparation of microminiaturization device for next-generation wearable electronics.