Controlled synthesis of KCu7S4/rGO nanocomposites for electrochemical energy storage

Controlled synthesis of KCu7S4/rGO nanocomposites for electrochemical energy storage

Blog Article

Aqueous rechargeable batteries present desired properties of considerable energy density, low-cost and high safety for large-scale energy storage systems.However, the scarcity of available negative electrode materials Counter Height Stool with high capacity and satisfying cycling life still hinders their development.Here, we report a novel tunnel structured KCu7S4 negative electrode material for aqueous rechargeable batteries.

The structural evolution and charge storage mechanism of the KCu7S4 is successfully studied by using ex-situ XPS and XRD.The charge storage can be attributed to the deep oxidation of Cu+ into Cu2+/Cu3+ and the good reversible reaction.The electrochemical induced irreversible phase transformation of Cu7S4 into Cu1.

96S is mainly responsible for the capacity degradation of the KCu7S4 electrode.Fortunately, the optimized KCu7S4/rGO composite electrode shows good electrochemical performance and Hockey Protective - Shoulder Pads - Junior the fabricated full cell delivers good energy storage capability.These findings can broaden the horizon of negative elctrode materials and endow new opportunities for the fabrication of advanced rechargeable batteries.