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Achieving Continuous Self-Powered Energy Conversion-Storage-Supply Integrated System Based on Carbon Felt.

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A new integrated system using carbon felt simultaneously harvests, stores, and supplies energy for Internet of Things (IoTs) devices. This system efficiently powers multiple LEDs, demonstrating potential for continuous energy applications.

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Area of Science:

  • Materials Science
  • Energy Storage
  • Nanotechnology

Background:

  • Efficient energy harvesting and storage are critical for distributed Internet of Things (IoTs) devices.
  • Current solutions often struggle with simultaneous energy conversion and storage.

Purpose of the Study:

  • To develop an integrated system for simultaneous energy conversion, storage, and supply.
  • To utilize carbon felt (CF) as a core material for enhanced device performance.

Main Methods:

  • Fabrication of a carbon felt-based energy conversion-storage-supply integrated system (CECIS).
  • Integration of a CF-based solid-state supercapacitor (CSSC) and a CF-based triboelectric nanogenerator (C-TENG).
  • Characterization of the electrochemical and triboelectric properties of the integrated system.

Main Results:

  • The CF-based supercapacitor achieved a maximal specific capacitance of 402.4 F g-1 with fast charge/slow discharge capabilities.
  • The integrated system successfully powered 38 LEDs for over 900 seconds after a 2-second wireless charge.
  • The C-TENG component generated a maximal power of 91.5 mW.
  • The CECIS demonstrated a supply-to-harvesting/storage time ratio of 9.6:1, indicating suitability for continuous energy needs.

Conclusions:

  • The developed CECIS offers a promising solution for sustainable energy harvesting and storage for IoTs.
  • The study validates the potential of CF-based materials in advanced energy systems.
  • This work contributes to the advancement of self-powered IoT devices.