“…Furthermore, the MoSe 2 -TiO 2−x -G nano heterostructures exhibit a remarkable capacity retention relative to current density, the specific capacity at 5 A g −1 still remains 85.7% of the initial one at 0.1 A g −1 , which outperforms those of many MoSe 2 based anode in previous literatures (Figure 3d), such as MoSe 2 /C, [18,35,36] MoSe 2 @CoSe/N-C, [20] CNT/MoSe 2 , [17] MoSe 2 /dual C, [37] MoSe 2 /N-C, [38] MoSe 2 /G, [19,39] MoSe 2 /SnO 2 , [40] MoSe 2 /3D-C, [41] TiO 2 @MoSe 2 P-C, [42] MoSe 2 . [43] Meanwhile, the MoSe 2 -TiO 2−x -G nano heterostructures exhibit a long term cycle stability in the DME electrolyte (Figure 3e), the specific capacity is still 407.1 mAh g −1 with the retention of 92.5% after 2000 cycles at 2 A g −1 (recorded after the rate measurement), which is much superior than most of the state-of-the-art MoSe 2 anode reported in literatures (Table S1, Supporting Information). As expected, the performance degradation in the EC/DEC electrolyte is severe.…”