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首页> 外文期刊>Journal of Materials Research >A polydopamine coated polyaniline single wall carbon nanotube composite material as a stable supercapacitor cathode in an organic electrolyte
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A polydopamine coated polyaniline single wall carbon nanotube composite material as a stable supercapacitor cathode in an organic electrolyte

机译：聚多巴胺涂覆的聚苯胺单壁碳纳米管复合材料作为有机电解质中稳定的超级电容器阴极

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摘要

Developing high energy density supercapacitors is of great importance to the transportation, consumer electronics, and micro-grid energy storage sectors. Recently, the development of high voltage organic electrolyte based supercapacitor devices has been gaining much attention. Among them, there is an on-going intense interest in investigating high capacity lithium ion storage anode materials in hybrid supercapacitors. However, developing high capacity cathode materials for high voltage organic electrolyte supercapacitor devices is rarely investigated. The low electrical double layer capacitances of carbon cathode electrodes, which are widely used in current supercapacitor devices, are often the limiting bottleneck. In this contribution, we investigated the electrochemical energy storage behavior of a polyaniline (PANI)-single wall carbon nanotube (SWCNT) composite material in an organic electrolyte as a supercapacitor cathode. The PANI-SWCNT composite exhibits a high specific capacitance of 503 F/g, of which 58.8% of the total capacitance is attributed to the pseudocapacitive and electrical double layer energy storage. The cycling stability of the PANI-SWCNT composite could be further improved by polydopamine (PDA) modification. The PDA with strong adhesion properties is able to prevent mechanical degradation. The PDA modified PANI-SWCNT shows excellent stability with only 5% degradation after 2000 cycles.
机译：开发高能量密度的超级电容器对交通运输，消费电子和微电网储能领域至关重要。近来，基于高压有机电解质的超级电容器装置的开发已经引起了很多关注。其中，研究混合超级电容器中的高容量锂离子存储阳极材料引起了人们的持续关注。然而，很少研究开发用于高压有机电解质超级电容器装置的高容量阴极材料。在当前的超级电容器设备中广泛使用的碳阴极电极的低双电层电容通常是限制瓶颈。在此贡献中，我们研究了在有机电解质中作为超级电容器阴极的聚苯胺（PANI）-单壁碳纳米管（SWCNT）复合材料的电化学储能性能。 PANI-SWCNT复合材料具有503 F / g的高比电容，其中总电容的58.8％归因于伪电容和双电层能量存储。通过聚多巴胺（PDA）改性可以进一步提高PANI-SWCNT复合材料的循环稳定性。具有强粘附性的PDA能够防止机械性能下降。 PDA改性的PANI-SWCNT表现出出色的稳定性，在2000次循环后降解仅为5％。

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  • 来源
    《Journal of Materials Research》 |2015年第23期|3575-3583|共9页
  • 作者

    Xu Wang; Pooi See Lee;

  • 作者单位

    School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798;

    School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798;

  • 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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