Efficient utilization of waste wood sawdust to prepare carbon-based materials with regular morphologies and pore structures continues to be of interest, with the ultimate aim of fabricating optimized electrode materials for use in energy storage devices. This work used a process involving the liquefaction of larch wood sawdust together with in situ doping of tetraethoxysilane (TEOS) to act as a silica-based template. This allowed the fabrication of carbon materials with a uniform lamellar structure. As a result of its specific morphology and its hierarchical pore structure, this larch-based carbon demonstrated excellent electrochemical supercapacitor performance. The regular lamellar structure provided transmission channels for ions and also promoted charge storage. Remarkably, the material showed high values of specific capacitance (288 F/g), energy density (93.73 Wh/kg) and power density (850 W/kg) at a current density of 0.2 A/g in a 1 M KOH electrolyte. Good rate performance and stability (with capacitance retention exceeding 97 % after 3000 cycles) were also observed. This work demonstrates a new approach to value-added utilization of larch waste by producing a material that is an excellent candidate for manufacture of supercapacitor electrodes.

高效利用废木屑来制备具有规则形态和孔结构的碳基材料一直是人们关注的问题，其最终目的是制造用于储能装置的优化电极材料。这项工作使用了一种工艺，该工艺涉及落叶松木锯末的液化以及四乙氧基硅烷（TEOS）的原位掺杂，以此作为基于二氧化硅的模板。这允许制造具有均匀层状结构的碳材料。由于其特定的形态和分层的孔结构，这种基于落叶松的碳表现出出色的电化学超级电容器性能。规则的层状结构为离子提供了传输通道，并促进了电荷存储。值得注意的是，该材料显示出较高的比电容值（288 F / g），1 M KOH电解质中电流密度为0.2 A / g时的能量密度（93.73 Wh / kg）和功率密度（850 W / kg）。还观察到良好的速率性能和稳定性（3000次循环后电容保持率超过97％）。这项工作通过生产一种超级电容器电极极好的候选材料，展示了一种落叶松木增值利用的新方法。