Zinc-cobalt double-metal sulfides (ZCS) as Faradic electrode materials with high energy density have great potential fors upercapacitors, but their poor transfer efficiency for electrons and ions hinders their electrochemical response.H erein, ZnCo 2 (CO 3 ) 1.5 (OH) 3 @ZCS microflower hybrid arrays consisting of thin nanolayer petals were anchored on three-dimensional graphene (ZnCo 2 (CO 3 ) 1.5 (OH) 3 @ZCS/3DG) by as imple hydrothermal method and additional ion-exchangep rocess. AZ nCo 2 (CO 3 ) 1.5 (OH) 3 @ZCS/3DG electrode delivered high capacitance (2228 Fg À1 at 1Ag À1 )a nd long cycling life (85.7 %r etention after 17 000 cycles), which are ascribedt ot he multicomponents tructural design. The 3DGconductive substrate improves the electron-transfer dynamics of the electrode material. Meanwhile, the microflowers consisting of thin nanolayer petals could not only provide many actives ites for ions to improve thec apacitance, but also alleviate the volumee xpansion to ensure the structural stability. Furthermore,a na ll-solid-state asymmetric supercapacitor based on aZ nCo 2 (CO 3 ) 1.5 (OH) 3 @ZCS/3DG electrode achieved ah igh energy density of 27 Whkg À1 at 528.3 Wkg À1 ande xhibits exceptional cyclic stability for 23 000 cycles. Its ability to light ab lue LED for 9min verified the feasibility of its applicationf or energy storagedevices.[a] Q. Figure 3. a) XRD pattern of ZnCo 2 (CO 3 ) 1.5 (OH) 3 @ZCS powder,b)Raman spectrum of ZnCo 2 (CO 3 ) 1.5 (OH) 3 @ZCS/3DG,c )XPS full spectrum of ZnCo 2 (CO 3 ) 1.5 (OH) 3 @ZCS/3DG,d -f) Zn 2p, Co 2p, and S2 ph igh-resolution XPS spectra, respectively.

Molybdenum disulfide (MoS2) is a two‐dimensional layer structure with high edge energy state, resulting in high chemical activity. It can be widely used in the supercapacitors. Herein, a novel conductive architectures of MoS2/reduced graphene oxide (rGO) nanosheets was immobilized on carbon cloth (CC) via hydrothermal method. The MoS2/rGO nanosheets are uniformly grown on CC, which can provide a higher specific surface area and increase additional active sites. The intimate contact between nanostructured MoS2/rGO and active CC is in favor of maintaining the stability of structure. As a result, MoS2/rGO as a supercapacitor electrode material shows high specific capacitance of 331 F g−1 at 0.75 A g−1 and excellent cycling stability with a specific capacitance retention of 110.7% after 15000 cycles. Moreover, the asymmetric supercapacitor is assembled and the device shows a high energy density of 29.2 Wh kg−1 and a high power density of 4517.7 W kg−1. These results indicate that MoS2/rGO as an electrode material has an important application potential in supercapacitors.