Electrode fabrication process tailed flower-like electrode with fast and superior lithium ion storage for high performance lithium ion batteries

The stable and rapid energy storage is highly desired, yet it is still impeded by the fast capacity degradation and low lithium ion diffusion rate at the same time. In order to settle this issue, the modification of active materials is reported in a serious of work to achieve the fast and stable lithium ion storage. In this work, we provide a novel perspective aimed both at active material modification and electrode morphology. Interestingly, in the Reduced graphene oxide (rGO)/Fe 3 O 4 @Carbon(Fe 3 O 4 @C) composites, electrode with flower-like morphology are formed after the electrode fabrication process by applying force. After the analysis, the unique flower-like morphology consists of many bulges, which can be illustrated by the deformation of sheet-like rGO sheets with proper reduction with in-plane confined active materials by applying force. The semi-quantitative equation of the bulge are illustrated when combined Elastic Mechanics, geometric analysis and the translocation analysis. With the combination of the in-plane confined structure of active material and the flower-like morphology of electrode, the anode exhibits a excellent lithium ion storage (605 mAh g −1 after 1800 cycles at 5A g −1 ). This strategy is hopefully applied to other potential batteries.