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首页> 外文期刊>Journal of Materials Research >Bioinspired nanostructural peptide materials for supercapacitor electrodes
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Bioinspired nanostructural peptide materials for supercapacitor electrodes

机译:超级电容器电极的生物启发性纳米结构肽材料

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摘要

Self-assembly bioinspired peptide nanotubes (PNT) demonstrate diverse physical properties such as optical, piezoelectric, fluidic, etc. In this work, we present our research on environmentally clean bioinspired peptide nanostructured material, to be applied to energy storage devices-supercapacitors (SC). Such an application is based on our recently developed PNT physical vapor deposition technology. It has been found that PNT fine structure and its wettability in electrolytes are the critical factors for a strong variation of the SC capacitance. We show that PNT-coated carbon electrodes enlarge the double-layer capacitance by dozens of times; reaching 800 μF/cm~2 in a sulfuric acid (normalizing to the electrode geometric surface area of carbon background electrode). The discovered effect is provided by hollow PNT possessing numerous hydrophilic nanoscale-diameter channels, elongated along the PNT axis, which dramatically increase the functional area of carbon electrodes. Another type of the observed PNT morphology is fiberlike highly hydrophobic PNT rods, which do not contribute to the SC capacitance.
机译:自组装生物启发性肽纳米管(PNT)表现出多种物理特性,例如光学,压电,流体等。在这项工作中,我们介绍了我们对环境清洁的生物启发性肽纳米结构材料的研究,该材料将应用于储能设备-超级电容器(SC) )。这样的应用是基于我们最近开发的PNT物理气相沉积技术。已经发现,PNT的精细结构及其在电解质中的润湿性是SC电容强烈变化的关键因素。我们显示,涂有PNT的碳电极使双层电容增大了数十倍;在硫酸中达到800μF/ cm〜2(以碳背景电极的电极几何表面积为标准)。空心PNT具有许多亲水性纳米直径通道,沿PNT轴延伸,从而显着增加了碳电极的功能面积,从而实现了发现的效果。观察到的PNT形态的另一种类型是纤维状的高疏水性PNT棒,它们对SC电容没有贡献。

著录项

  • 来源
    《Journal of Materials Research》 |2010年第8期|P.1661-1666|共6页
  • 作者

    P. Beker; rnG. Rosenman;

  • 作者单位

    Department of Physical Electronics, School of Electrical Engineering, The Iby & Aladar Fleischman Faculty of Engineering, Tel Aviv University, 69978 Tel Aviv, Israel;

    rnDepartment of Physical Electronics, School of Electrical Engineering, The Iby & Aladar Fleischman Faculty of Engineering, Tel Aviv University, 69978 Tel Aviv, Israel;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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