4.8 Article

Air-Stable Conductive Polymer Ink for Printed Wearable Micro-Supercapacitors

期刊

SMALL
卷 17, 期 25, 页码 -

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202100956

关键词

conductive polymer inks; electrochemical energy storage; polyaniline nanosheets; printed electronics; wearable electronics

资金

  1. National Natural Science Foundation of China [51977185, 51972277]
  2. Sichuan Science and Technology Program [20ZDYF2478, 20ZDYF2833, 21ZDYF3951]

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This study developed a low-cost, easy-to-fabricate, and stable conducting polymer ink for wearable micro-supercapacitors with high capacitance and conductivity. This research provides a new approach for scalable micro-supercapacitors in next-generation distributed electronics.
Printed electronics are expected to facilitate the widespread distributed wearable electronics in the era of the Internet of things. However, developing cheap and stable electrode inks remains a significant challenge in the printed electronics industry and academic community. Here, overcoming the weak hydrophilicity of polyaniline, a low-cost, easy-fabricating, and air-stable conducting polymer (CP) ink is devised through a facile assemble-disperse strategy delivering a high conductivity in the order of 10(-2) S cm(-1) along with a remarkable specific capacitance of 386.9 F g(-1) at 0.5 A g(-1) (dehydrated state). The additive-free CP ink is directly employed to print wearable micro-supercapacitors (MSCs) via the spray-coating method, which deliver a high areal capacitance (96.6 mF cm(-2)) and volumetric capacitance (26.0 F cm(-3)), outperforming most state-of-the-art CP-based supercapacitors. This work paves a new approach for achieving scalable MSCs, thus rendering a cost-effective, environmentally friendly, and pervasive energy solution for next-generation distributed electronics.

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