In-Plane Supercapacitor Formed by Laser Carbonization of Polymer Surface

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  • WATANABE Akira
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
  • CAI Jinguang
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

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  • ポリマー表面のレーザーカーボン化による平面型スーパーキャパシタ
  • ポリマー ヒョウメン ノ レーザーカーボンカ ニ ヨル ヘイメンガタ スーパーキャパシタ

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We fabricated a high-performance flexible in-plane micro-supercapacitor (MSC) with greatly improved energy and power densities by laser direct writing of a carbon interdigitated electrode on a polyimide film using a 405 nm blue-violet laser. The morphologies and electrical conductivities of the carbon layers formed on the polyimide surface were remarkably influenced by the laser powers and atmospheres during laser irradiation. An MSC prepared by laser carbonization in an inert Ar gas showed excellent cycling stability, good flexibility, and the capability of operating at a high energy density, which is expected as an energy storage device for Internet of Things (IoT) technology based on smart materials.

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