Ordered Macroporous MoS ₂ ?Carbon Composite with Fast and Robust Sodium Storage Properties to Solve the Issue of Kinetics Mismatch of Sodium?Ion Capacitors

Metal-ion capacitors (including Li+, Na+, and K+) effectively combine a battery negative electrode capable of reversibly intercalating metal cations, together with an electrical double-layer positive electrode. However, such novel cell design has birth defect, namely kinetics mismatch between sluggish fast electrode, thus limiting the energy-power performance. Herein, we MoS2-carbon composite anode ordered macroporous architecture interlayer-expanded feature, exhibiting reversible Na+ redox processes. This kinetically favored is coupled homemade activated carbon cathode that allows for excellent electrochemical performance sodium-ion capacitor respect to large specific capacity, high-rate capability, robust cycling. Through quantification potential swings via three-electrode Swagelok cell, first time observe abnormal variation law directly providing evidence gap been filled up by this anode. Our results represent crucial step toward understanding key issues hybrid propelling development materials high-performance metal-ion capacitors.