Due to the addition of rGO, the anode material gains stable structure and great conductivity. It changes the capacity contribution mechanism from diffusion process dominance to surface driven capacitive contribution. It proved that the rGO added in the anode has a capacity contribution to the lithium-ion battery. g -1 and the capacity remained at 300 mA.The initial discharge capacity of the composite cathode is 959 mA Three-dimensional structure of rGO could effectively hinder the polymerization of SnO 2 nanoparticles and provide more lithium storage sites attributed to high specific surface area and density defects. Herein, SnO 2/rGO composite is obtained through one-step hydrothermal method. To solve this problem, in this work the reduced graphene oxide (rGO) was introduced as volume buffer matrix of SnO 2. While the severe volume expansion of SnO 2 during lithium-ion extraction/intercalation limits its further application. Compared with ordinary graphite anode, SnO 2 possesses higher theoretical specific capacity, rich raw materials and low price.
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