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Ionic liquids (ILs) or solidified ionic liquids, known as ionogels, have been actively employed in supercapacitors (SCs) owing to their superior electrochemical stabilities to aqueous and organic electrolytes. However, initial efforts of using ILs and ionogels in SCs were not successful because bulky and sluggish ions cannot effectively access tiny pores of conventional microporous carbons. To address this, a strategy is developed to optimize the electrochemically active surfaces of carbonaceous electrodes and thus to improve the energy storage performance by incorporating 3D ordered/interconnected large mesoporous carbons with ionogel electrolytes. Precisely designed large mesopores interconnected via windows promote mass transport of the electrolyte ions within the solid ionogel electrolytes and effectively utilize the surface of the carbon electrodes for capacitive energy storage, giving rise to record‐high energy storage performance that surpasses the upper bound of the Ragone plots of the current state‐of‐the‐art SCs. In addition, all‐solid‐state SCs with outstanding bending/folding durability are successfully demonstrated. Overall, these results provide critical insight into surface utilization of carbon electrodes as well as capacitive energy storage, when viscous and bulky ILs or ionogels are used as electrolytes.

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The application of nanoparticles in cancer treatment allows precise tumor treatment by enhancing drug delivery to the tumor area. To overcome limitations in the drug delivery system, we report carbon‐based nanospheres (CSs) that have high drug loading capacity as well as anti‐cancer effects. Monodisperse and size‐tunable (170–583 nm) CSs with excellent surface area up to 2619 m2/g provided high drug loading capacity in four different types of drugs (doxorubicin, gemcitabine, docetaxel, and paclitaxel), and demonstrated strong anti‐cancer effects against MDA‐MB‐231 human breast carcinoma cells.

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