Porous carbon materials have been widely used as electrodes for various energy storage and conversion devices, particularly for supercapacitors. Herein, a bamboo-derived hierarchical porous carbon (BHPC) is directly prepared under air atmosphere via an eco-friendly, one-step, and easily-scalable salt-templating strategy using ZnCl₂/KCl salt mixture as a pore-directing solvent. The obtained BHPC material exhibits large specific surface area (1296 m² g⁻¹) and large total pore volume (1.26 cm³ g⁻¹) which make the BHPC material applicable for supercapacitor as an electrode material. Electrochemical performance evaluated in a 6 M KOH electrolyte in a three-electrode system indicates a high specific capacitance of 394 F g⁻¹ at 1 A g⁻¹ and a good rate capacity with 76.14% capacitance retention at 20 A g⁻¹. The as-prepared symmetric supercapacitor delivers a high energy density of 11 Wh kg⁻¹ at a powder density of 126 W kg⁻¹, and an outstanding lifespan with 81% capacitance retention over 10,000 cycles. These results further open new possibilities for tailoring the surface properties (i.e., heteroatom doping, surface modification, metal oxides incorporation, etc.) towards energy storage and conversion applications such as electrocatalysts for oxygen reduction reaction/hydrogen evolution reaction, lithium-ion batteries, and supercapacitors, as well as wastewater treatment, and electromagnetic wave absorption applications.

多孔碳材料已广泛用作各种能量存储和转换装置的电极，特别是超级电容器。_{在此，使用 ZnCl 2} /KCl 盐混合物作为孔导向溶剂，通过环保、一步且易于扩展的盐模板化策略，在空气气氛下直接制备了一种源自竹子的分级多孔碳 (BHPC)。所获得的 BHPC 材料表现出较大的比表面积 (1296 m ²  g ^-1 ) 和较大的总孔体积 (1.26 cm ³  g ^-1) 使得 BHPC 材料适用于超级电容器作为电极材料。在三电极系统中使用 6 M KOH 电解质评估的电化学性能表明 在 1 A g ^{-1时具有 394 F g -1}的高比电容和在 20 A g ^-1时具有 76.14% 电容保持率的良好倍率容量。所制备的对称超级电容器在 126 W kg ^-1 的粉末密度下提供 11 Wh kg ^{-1的高能量密度}，以及出色的使用寿命，在 10,000 次循环后仍具有 81% 的电容保持率。这些结果进一步为针对能量存储和转换应用（例如用于氧还原反应/析氢反应的电催化剂、锂离子电池、和超级电容器，以及废水处理和电磁波吸收应用。