Sandwich-like Cr2O3-graphite intercalation composites as high-stability anode materials for lithium-ion batteries

Novel sandwich-like Cr2O3-graphite intercalation composites (Cr2O3-GICs) were synthesized via an intercalation-transformation method. Cr2O3 nanoparticles (NPs) are intercalated between the adjacent carbon layers of graphite and tightly immobilized. The Cr2O3-GICs show promising performance as anode materials for LIBs with a reversible capacity of about 480 mA h g(-1) and a relatively low lithium insertion potential. More importantly, the Cr2O3-GICs demonstrate an extremely promising stable cycling performance with over 100% capacity retention after 1000 cycles. Furthermore, the intercalation-transformation method also provides another fabrication method of graphene-based assembled materials.