Beyond-lithium-ion storage devices are promising alternatives to lithium-ion storage devices for low-cost and large-scale applications. Nowadays, the most of high-capacity electrodes are crystal materials. However, these crystal materials with intrinsic anisotropy feature generally suffer from lattice strain and structure pulverization during the electrochemical process. Herein, a 2D heterostructure of amorphous molybdenum sulfide (MoS3 ) on reduced graphene surface (denoted as MoS3 -on-rGO), which exhibits low strain and fast reaction kinetics for beyond-lithium-ions (Na+ , K+ , Zn2+ ) storage is demonstrated. Benefiting from the low volume expansion and small sodiation strain of the MoS3 -on-rGO, it displays ultralong cycling performance of 40 000 cycles at 10 A g-1 for sodium-ion batteries. Furthermore, the as-constructed 2D heterostructure also delivers superior electrochemical performance when used in Na+ full batteries, solid-state sodium batteries, K+ batteries, Zn2+ batteries and hybrid supercapacitors, demonstrating its excellent application prospect.
Keywords: 2D heterostructure; amorphous molybdenum sulfide; beyond-lithium-ion storage; sodium-ion batteries; solid state sodium batteries.
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