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首页> 外文期刊>Journal of materials science >Protein-derived nitrogen-doped hierarchically porous carbon as electrode material for supercapacitors
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Protein-derived nitrogen-doped hierarchically porous carbon as electrode material for supercapacitors

机译：蛋白质衍生的氮掺杂分级多孔碳作为超级电容器的电极材料

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摘要

This study aimed at developing supercapacitor electrode materials from textile industry waste, thereby mediating waste disposal problem through reuse. Through a simple two-step process, nitrogen-doped hierarchically porous carbons (NHPC) derived from sericin, a waste protein, were synthesized and used for electrochemical capacitors for the first time. The as-prepared NHPC with a specific surface area of 2723 m_(2) g_(−1)and a pore volume of 1.42 cm_(3) g_(−1)exhibited a high specific capacitance of 287 F g_(−1)at the current density of 0.5 A g_(−1), which was comparable or even higher than that of numerous porous carbon materials reported previously. With this electrode, about 93% of the initial capacitance (221 F g_(−1)/5 A g_(−1)) was retained after 10,000 cycles, demonstrating a good cyclic stability. Moreover, the specific capacitance of sericin-derived NHPC is also better than that of fibroin-derived porous carbon. This work not only developed an effective way to prepare high-performance supercapacitor electrode materials from the waste protein, but also provided a strategy for its disposal issue and contributed to the environmental improvement.
机译：这项研究旨在从纺织工业废物中开发超级电容器电极材料，从而通过再利用来解决废物处置问题。通过简单的两步过程，合成了源自废胶蛋白丝胶的氮掺杂分级多孔碳（NHPC），并将其首次用于电化学电容器。制备的比表面积为2723 m_（2）g _（-1）且孔容为1.42 cm_（3）g _（-1）的NHPC在280°F g _（-1）时具有较高的比电容电流密度为0.5A g _（-1），与之前报道的众多多孔碳材料相当甚至更高。使用该电极，在10,000次循环后保留了大约93％的初始电容（221 F g _（-1）/ 5 A g _（-1）），这表明其具有良好的循环稳定性。此外，丝胶蛋白衍生的NHPC的比电容也比丝纤蛋白衍生的多孔碳的比电容更好。这项工作不仅为从废蛋白制备高性能超级电容器电极材料提供了有效的方法，而且为解决其废弃问题提供了策略，并为改善环境做出了贡献。

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