PDF(Pubmed)
Abstract：
Carbonization of biomass residues followed by activation has great potential to become a safe process for the production of various carbon materials for various applications. Demand for commercial use of biomass-based carbon materials is growing rapidly in advanced technologies, including in the energy sector, as catalysts, batteries and capacitor electrodes. In this study, carbon materials were synthesized from hardwood using two carbonization methods, followed by activation with H3PO4, KOH and NaOH and doping with nitrogen. Their chemical composition, porous structure, thermal stability and structural order of samples were studied. It was shown that, despite the differences, the synthesized carbon materials are active catalysts for oxygen reduction reactions. Among the investigated carbon materials, NaOH-activated samples exhibited the lowest Tafel slope values, of -90.6 and -88.0 mV dec-1, which are very close to the values of commercial Pt/C at -86.6 mV dec-1.
摘要：
生物质残余物的碳化以及随后的活化具有成为生产用于各种应用的各种碳材料的安全方法的巨大潜力。生物质基碳材料的商业使用需求在先进技术中快速增长，包括能源部门，作为催化剂，电池和电容器电极。在这项研究中,用两种碳化方法从硬木中合成了碳材料，然后用H3PO4、KOH和NaOH活化并用氮掺杂。它们的化学成分,多孔结构，研究了样品的热稳定性和结构有序性。事实证明，尽管存在差异,合成的碳材料是氧还原反应的活性催化剂。在研究的碳材料中，NaOH活化的样品表现出最低的Tafel斜率值，-90.6和-88.0mVdec-1，非常接近商业Pt/C在-86.6mVdec-1的值。
