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首页> 外文期刊>Applied Surface Science >PEDOT-modified laser-scribed graphene films as bginder- and metallic current collector-free electrodes for large-sized supercapacitors
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PEDOT-modified laser-scribed graphene films as bginder- and metallic current collector-free electrodes for large-sized supercapacitors

机译：PEDOT改性激光划线的石墨烯薄膜作为BGINDER-和金属集电极的电极，用于大型超级电容器

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摘要

The rapid development of wearable electronic devices and energy storage devices has increased the demand for flexible, lightweight, and durable supercapacitors. Nevertheless, the cost-effective synthesis of suitable active materials and the facile fabrication of electrodes for energy storage systems remain a challenge for practical applications. In this study, we developed a scalable method for the fabrication of graphene-based supercapacitors, by using a CO(2 )infrared laser to transform polyimide (PI) films into porous graphene. Furthermore, when modified with oxidatively polymerized poly (3,4-ethylenedioxythiophene) (PEDOT), the conductivity of the graphene films was enhanced significantly. The resultant films could be fabricated directly for use in supercapacitors without employing metallic current collectors. The current collector-free supercapacitors exhibited excellent electrochemical properties, rivaling those obtained from corresponding devices featuring metallic current electrodes. An assembled device having a large working area (4 x 4 cm(2)) displayed reversible capacities of 115.2, 97.0, and 78.4 F/g at rates of 0.5, 2, and 6 A/g, respectively. Moreover, only slight losses in capacitance occurred after 4000 charge/discharge cycles and 2000 bending cycles, indicative of remarkable cycling life and mechanical stability.
机译：可穿戴电子设备和储能设备的快速发展增加了对柔性，轻质和耐用的超级电容器的需求。然而，用于储能系统的合适的活性材料的成本效益合成以及用于储能系统的电极的容纳仍然是实际应用的挑战。在该研究中，我们开发了一种可扩展方法，用于制造基于石墨烯的超级电容器，通过使用CO（2）红外激光将聚酰亚胺（PI）膜转化为多孔石墨烯。此外，当用氧化聚合的聚（3,4-亚乙二氧基噻吩）（PEDOT）进行改性时，石墨烯膜的导电性显着提高。所得薄膜可以直接制造用于超级电容器，而不采用金属集电器。本集聚物的超级电容器表现出优异的电化学性质，靶向从具有金属电流电极的相应装置获得的那些。具有大工作区域的组装装置（4×4cm（2））显示可逆容量为115.2,97.0和78.4 f / g，分别为0.5,2和6a / g的速率。此外，只有在4000个充电/放电循环和2000次弯曲循环之后只发生电容的轻微损失，表示显着的循环寿命和机械稳定性。

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  • 来源
    《Applied Surface Science》 |2020年第jul15期|146193.1-146193.9|共9页
  • 作者

    Cho Er-Chieh; Chang-Jian Cai-Wan; Syu Wei-Lin; Tseng Hsueh-Sheng; Lee Kuen-Chan; Huang Jen-Hsien; Hsiao Yu-Sheng;

  • 作者单位

    Taipei Med Univ Coll Pharm Sch Pharm Dept Clin Pharm 250 Wuxing St Taipei 110 Taiwan;

    I Shou Univ Dept Mech & Automat Engn 1 Sect 1 Syuecheng Rd Kaohsiung 84001 Taiwan;

    Ming Chi Univ Technol Dept Mat Engn 84 Gungjuan Rd New Taipei 24301 Taiwan;

    Ming Chi Univ Technol Dept Mat Engn 84 Gungjuan Rd New Taipei 24301 Taiwan;

    Natl Taipei Univ Educ Dept Sci Educ 134 Sect 2 Heping E Rd Taipei 106 Taiwan;

    CPC Corp Green Technol Res Inst Dept Green Mat Technol 2 Zuonan Rd Kaohsiung 81126 Taiwan;

    Ming Chi Univ Technol Dept Mat Engn 84 Gungjuan Rd New Taipei 24301 Taiwan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Laser-scribed graphene; Supercapacitor; Binder-free; PEDOT;

    机译：激光划线石墨烯;超级电容器;无粘合剂;佩特;

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