Densely-stacked N-doped porous carbon monolith derived from sucrose for high-volumetric energy storages

Development of carbon electrodes with high volumetric electrochemical performance is challenging for high-performance energy storage devices. In this work, we demonstrate a novel sucrose-derived porous carbon monolith (NPC-m) constructed by holey carbon nanosheets for super-high volumetric energy storages.NPC-m, derived from sucrose via a facile yet scalable and economic “bottom-up” synthesis route, exhibits a high specific surface area of 1376 m2 g−1, a narrow hole size distribution, and a high N content (∼6.65 at. %). Most importantly, a self-stacking density as high as 1.26 g cm−3 can be achieved via simple drying processes. The electrodes based on NPC-m in carbon electrodes deliver super-high volumetric capacities of 1385 mAh cm−3 (0.1 A g−1) for Li-ion batteries and 380 F cm−3 (0.5 A g−1) for supercapcacitors, highlighting their great potentials for high-performance energy storages.