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首页> 外文期刊>Applied Surface Science >Surface characteristics of porous carbon derived from genetically designed transgenic hybrid poplar for electric double-layer capacitors
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Surface characteristics of porous carbon derived from genetically designed transgenic hybrid poplar for electric double-layer capacitors

机译：基因设计转基因杂交杨的多孔碳的表面特征，用于电双层电容器

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摘要

Wood and wood residues are attractive sources for supercapacitor electrode materials because of their abundance and sustainability. As each lignocellulosic biomass has an intrinsic chemical composition, improvements in the energy storage capability have relied on modified preparation conditions or the introduction of functional groups or foreign materials. However, owing to advances in genetic science, the influence of biomass chemical composition on the surface characteristics and electrochemical behavior of wood-derived porous carbons can be investigated toward the development of high-performance supercapacitor electrodes. Herein, we compare the electrochemical performance of porous carbons derived from genetically designed transgenic and wild poplar following chemical activation with KOH at 800 degrees C. The transgenic poplar-derived porous carbon shows similar to 80% higher capacitance than the wild-poplar-derived porous carbon at 0.2 A/g and greater performance at all test rates (0.2-20 A/g). An increased cellulose fraction or decreased lignin fraction in the biomass increases the surface area and the amount of oxygen functional groups on the porous carbon, thus enhancing the electrochemical performance. These findings are expected to advance the use of biomass-derived materials in energy storage applications.
机译：由于其丰富和可持续性，木材和木材残留物是超级电容器电极材料的吸引力。随着每个木质纤维素生物量具有本质化学成分，储能能力的改善依赖于改性的制备条件或官能团或异物的引入。然而，由于遗传科学的进展，生物量化学成分对木材衍生多孔碳的表面特性和电化学行为的影响可以研究高性能超级电容电极的发展。在此，我们比较遗传设计的转基因和野性杨树的多孔碳的电化学性能在800℃下用KOH进行化学活化。转基因杨树衍生的多孔碳显示与野生杨衍生多孔相似的80％较高的电容碳在0.2 A / g的碳，并且在所有测试速率下表现更大（0.2-20a / g）。生物质中的增加的纤维素分数或降低的木质素级分增加了多孔碳上的表面积和氧官能团的量，从而提高了电化学性能。这些发现预计将推进在能量储存应用中使用生物质衍生材料。

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