New Cr2Mo3O12-based anodes: morphology tuning and Li-storage properties

Abstract

A new ternary metal oxide (Cr₂Mo₃O₁₂) anode for Li-ion batteries is reported in this work. Experimental conditions such as reaction temperature, reaction time, and reactant concentration have all been investigated. The product can be obtained with sheet-like or rod-like morphology with/without the presence of a graphene support. The Cr₂Mo₃O₁₂/graphene rod-on-sheet composite is found to be more suitable for Li-storage compared to the Cr₂Mo₃O₁₂/graphene sheet-on-sheet composite and pristine Cr₂Mo₃O₁₂ nanosheets/nanorods. The rod-on-sheet composite delivers a large reversible capacity of 988 mA h g⁻¹ after 50 cycles at a current density of 100 mA g⁻¹ and a good rate capability. Moreover, a preliminary Li-storage mechanism is also explored and suggested.