Biomass-based carbon is a novel multi-functional material but its precursors possess a complicated composition and a pore structure that is difficult to regulate, which limits its research and use in the energy storage field. We introduce a liquefaction technology in cooperation with an in situ doping strategy using different sources of silicon, and fabricate porous biomass-based carbon materials with a microporous and mesoporous structure. Here we show that the lamellar structure of biomass-based carbon composites with an ordered porous structure reveals a high specific capacitance (288.0 F/g), energy density (93.7 Wh/kg) and power density (850.0 W/kg) at a current density of 0.2 A/g in 1 M KOH electrolyte, as well as a good rate performance and stability (with a capacitance retention above 97% after 3000 cycles).

基于生物质的碳是一种新型的多功能材料，但其前体具有复杂的组成和难以调节的孔结构，这限制了其在储能领域的研究和使用。我们结合使用不同来源的硅的原位掺杂策略引入液化技术，并制造具有微孔和中孔结构的多孔生物质基碳材料。在这里，我们显示出具有有序多孔结构的生物质基碳复合材料的层状结构在当前电流下显示出高的比电容（288.0 F / g），能量密度（93.7 Wh / kg）和功率密度（850.0 W / kg）在1 M KOH电解液中密度为0.2 A / g，并具有良好的倍率性能和稳定性（3000次循环后电容保持率高于97％）。