▎ 摘　　要

As flexible devices have become increasingly popular in our daily Life, flexible energy-supply devices, especiay flexible Lithium-ion batteries (LIBs), have attracted great attention. Graphene foam is a Lightweight, flexible and conductive interconnected network that can be directly used as a current collector materiaL to disperse active materiaLs. FeF3 center dot 0.33H(2)O is a suitable active cathode materiaL with a high theoretical capacity and natural abundance. But its poor ionic and electrical conductivity Limits its application. In order to combine the superior qualities of GE and FeF3 center dot 0.33H(2)O, we developed a scCO(2)-assisted method to grow FeF3 center dot 0.33H(2)O flower-Like arrays perpendicuLarLy on GE. Consequenty, the designed composites efficienty combine the good flexibility of GE and high energy storage capacity of FeF3 center dot 0.33H(2)O. The strong interaction between GE and FeF3 center dot 0.33H(2)O established by the scCO(2) method greaty improves the electron transport and ion migration. Thus, the obtained flexible elctrode requires no binder, metal current collectors and conducting agents. It shows a capacity of about 145 mA h g(-1) at a current density of 1C (200 mA g(-1)) after assembled as a cathode electrode.