Laser-Induced Graphene Formation on Chitosan Derivatives toward Ecofriendly Electronics

Qian Ming Huang, Huiru Yang, Shaogang Wang, Xu Liu, Chunjian Tan, Anxin Luo, Siyuan Xu, Guoqi Zhang, Huaiyu Ye*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
46 Downloads (Pure)

Abstract

Laser-induced graphene (LIG) has aroused a wide range of research interests ranging from micro-nano energy devices to the Internet of Things (IoT). Nevertheless, the non-degradability of most-used synthetic polymer carbon sources poses a serious threat to the environment. In this work, ecofriendly chitosan-based derivatives, including carboxymethyl chitosan (CMCS), chitosan oligosaccharide, and chitosan hydrochloride, are successfully converted into LIGs for the first time via a convenient one-step CO2 laser engraving at ambient air. The obtained LIGs are characterized by a three-dimensional hierarchical porous structure and exhibit good sheet conductivity. The consecutive carbonization and graphitization mechanism of target precursors induced by laser heat accumulation is also deeply discussed. Besides, based on a mechanically reliable LIG/CMCS composite film and tribo-negative acrylic/polyimide anti-layers, two contact-separation mode triboelectric nanogenerators are built and their power densities range from 1.44 to 2.48 mW cm-2. These devices with long cycle life can be used for low-frequency mechanical energy harvesting and commercial capacitance charging, which could be potentially applied in the wireless sensor network nodes. Such a family of chitosan derivatives paves a new route for LIG synthesis and provides new ideas for ecofriendly LIG electronics.

Original languageEnglish
Pages (from-to)10453-10465
Number of pages13
JournalACS Applied Nano Materials
Volume6
Issue number12
DOIs
Publication statusPublished - 2023

Keywords

  • carbon precursor
  • chitosan derivatives
  • ecofriendly and biodegradability
  • laser-induced graphene
  • triboelectric nanogenerator

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