Swine manure activated carbon (SMAC) with self-co-doped metallic compounds and heteroatoms was prepared by combining KOH activation with pyrolysis. The structure, electrochemical performance and adsorption of SMACs prepared with various activation temperatures, activation times, alkali-carbon ratios and pickling steps were investigated. A hierarchical pore structure existed in all the SMACs, which showed excellent and significantly different properties, including a specific capacitance of 278 F/g, and a high SSA of 2321 m²/g (SMAC_HF), which retained 100% of its capacitance after 10,000 cycles at 5 A/g and a Pb²⁺ adsorption capacity of 211.8 mg/g at room temperature (SMAC_NON). The SMACs contained heteroatom functional groups and Si, Ca and Mg compounds, which did not produce pseudocapacitors but did increase the Pb²⁺ adsorption capacity and electrochemical cycling stability. The Pb²⁺ adsorption capacities of SMAC_NON, SMAC_PHF and SMAC_HF corresponded to the effect of the functional group content rather than the effect of the SSA. These porous carbons were derived from inexpensive swine manure, combine suitable porosity with metallic elements and heteroatom doping, and have promising uses in multifunctional applications.

通过将 KOH 活化与热解相结合，制备了具有自共掺杂金属化合物和杂原子的猪粪活性炭（SMAC）。研究了不同活化温度、活化时间、碱碳比和酸洗步骤制备的 SMACs 的结构、电化学性能和吸附。所有 SMAC 均存在分级孔结构，表现出优异且显着不同的性能，包括 278 F/g 的比电容和 2321 m ² /g (SMAC _HF )的高 SSA ，其保持 100% 的电容在 5 A/g 下循环 10,000 次后，室温下Pb ²⁺吸附容量为 211.8 mg/g（SMAC _NON）。SMAC 含有杂原子官能团和 Si、Ca 和 Mg 化合物，它们不会产生赝电容器，但确实增加了 Pb ²⁺吸附容量和电化学循环稳定性。SMAC _NON、SMAC _PHF和SMAC _HF的Pb ²⁺吸附能力对应于官能团含量的影响而不是SSA 的影响。这些多孔碳来源于廉价的猪粪，将合适的孔隙率与金属元素和杂原子掺杂相结合，在多功能应用中具有广阔的应用前景。