Porous biomass-carbon materials for supercapacitor applications have recently attracted attention. Chitin, which has abundant amides and hydroxyl groups, was used as an ideal precursor for carbon in this work. The chitin was treated with a one-step method to produce a heteroatom-loaded porous carbon material, and its electrochemical properties were significantly improved through the introduction of loaded elements. A mixture of chitin, zinc chloride, and heteroatoms was carbonized to obtain heteroatoms (N and S) and the bimetallic sulfide loaded hierarchical porous carbon. Then, the porous carbon with S, N, Zn, and Fe heteroatoms loading was used to prepare a supercapacitor with a specific capacitance of 277.4 F g⁻¹ at 1 A g⁻¹. In addition, the supercapacitor had a specific capacitance retention rate of 90% at 5 A g⁻¹ after 10,000 cycles. Therefore, hierarchical porous carbon materials loaded with heteroatoms and bimetallic sulfide were prepared by carbonization activation with chitin as the precursor. The resulting supercapacitor showed that the as-prepared porous biomass materials possessed ideal charging-discharging performance. Moreover, this work provides strategies for obtaining metal sulfides and heteroatom co-loading of carbon materials with excellent properties using a simple and efficient one-step method for renewable energy storage device applications.

用于超级电容器应用的多孔生物质碳材料最近引起了人们的关注。甲壳质具有丰富的酰胺和羟基，在这项工作中被用作碳的理想前体。几丁质经过一步法处理制备了一种负载杂原子的多孔碳材料，通过引入负载元素，其电化学性能得到显着改善。将几丁质、氯化锌和杂原子的混合物碳化以获得杂原子（N 和 S）和双金属硫化物负载的分级多孔碳。然后，S，N，锌，和铁的杂原子装载的多孔碳用于制备具有277.4 F G的特定电容的超级电容器^-1 1 A G ^-1. 此外，超级电容器在 10,000 次循环后在 5 A g ^{-1 下}的比电容保持率为 90% 。因此，以甲壳素为前驱体，通过碳化活化制备了负载杂原子和双金属硫化物的分级多孔碳材料。由此产生的超级电容器表明，所制备的多孔生物质材料具有理想的充放电性能。此外，这项工作提供了使用简单有效的一步方法获得金属硫化物和杂原子共载具有优异性能的碳材料的策略，用于可再生能源存储设备的应用。