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Potassium‐ion hybrid capacitors (PIHCs) shrewdly combine a battery‐type anode and a capacitor‐type cathode, exhibiting an energy density close to that of potassium ion batteries and a comparable power density of supercapacitors. However, the rosy scenario is compromised by the sluggish kinetics in the PIHCs device. Herein, the kinetics enhanced nitrogen‐doped hierarchical porous hollow carbon spheres...
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