Sodium-based　dual-ion　batteries　have　received　increased　attention　owing　to　their　appealing　cell　voltage　(i.e.,　＞3　V)　and　cost-effective　features.　However,　the　development　of　high-performance　anode　materials　is　one　of　the　key　elements　for　exploiting　this　electrochemical　energy　storage　system　at　practical　levels.　Here,　we　report　a　source-template　synthetic　strategy　for　fabricating　a　variety　of　nanowire-in-nanotube　MSxTey@C　(M　=　Mo,　W,　Re)　structures　with　an　in　situ-grown　carbon　film　coating,　termed　as　nanocables.　Among　the　various　materials　prepared,　the　MoS1.5Te0.5@C　nanocables　are　investigated　as　negative　electrode　active　material　in　combination　with　expanded　graphite　at　the　positive　electrode　and　NaPF6-based　non-aqueous　electrolyte　solutions　for　dual-ion　storage　in　coin　cell　configuration.　As　a　result,　the　dual-ion　lab-scale　cells　demonstrate　a　prolonged　cycling　lifespan　with　97%　capacity　retention　over　1500　cycles　and　a　reversible　capacity　of　about　101　mAh　g(-1)　at　specific　capacities　(based　on　the　mass　of　the　anode)　of　1.0　A　g(-1)　and　5.0　A　g(-1),　respectively.　Sodium-based　dual-ion　batteries　are　promising　electrochemical　energy　storage　devices.　Here,　the　authors　report　a　source-template　synthetic　strategy　to　prepare　carbon-coated　MoS1.5Te0.5　nanocables　and　their　use　as　anode　active　materials　in　Na-based　dual　ion　cells.