Laser direct writing of carbon/Au composite electrodes for high-performance micro-supercapacitors

Jinguang Cai, Akira Watanabe, Chao Lv

研究成果: Conference contribution

5 被引用数 (Scopus)

抄録

Micro-supercapacitors with small size, light weight, flexibility while maintaining high energy and power output are required for portable miniaturized electronics. The fabrication methods and materials should be cost-effective, scalable, and easily integrated to current electronic industry. Carbon materials have required properties for high-performance flexible supercapacitors, including high specific surface areas, electrochemical stability, and high electrical conductivity, as well as the high mechanical tolerance. Laser direct writing method is a non-contact, efficient, single-step fabrication technique without requirements of masks, post-processing, and complex clean room, which is a useful patterning technique, and can be easily integrated with current electronic product lines for commercial use. Previously we have reported micro-supercapacitors fabricated by laser direct writing on polyimide films in air or Ar, which showed highcapacitive performance. However, the conductivity of the carbon materials is still low for fast charge-discharge use. Here, we demonstrated the fabrication of flexible carbon/Au composite high-performance MSCs by first laser direct writing on commercial polyimide films followed by spin-coating Au nanoparticles ink and second in-situ laser direct writing using the low-cost semiconductor laser. As-prepared micro-supercapacitors show an improved conductivity and capacitance of 1.17 mF/cm2 at a high scanning rate of 10,000 mV/s, which is comparable to the reported capacitance of carbon-based micro-supercapacitors. In addition, the micro-supercapacitors have high bend tolerance and long-cycle stability.

本文言語English
ホスト出版物のタイトルLaser-Based Micro- and Nanoprocessing XI
編集者Udo Klotzbach, Rainer Kling, Kunihiko Washio
出版社SPIE
ISBN(電子版)9781510606258
DOI
出版ステータスPublished - 2017 1 1
イベントLaser-Based Micro- and Nanoprocessing XI 2017 - San Francisco, United States
継続期間: 2017 1 312017 2 2

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
10092
ISSN(印刷版)0277-786X
ISSN(電子版)1996-756X

Other

OtherLaser-Based Micro- and Nanoprocessing XI 2017
CountryUnited States
CitySan Francisco
Period17/1/3117/2/2

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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