Issue 36, 2023

A PA66 lamellar crystal film with excellent triboelectric performance in vertical contact separation mode

Abstract

Triboelectric nanogenerators (TENGs) are gaining tremendous attention as an environmentally friendly technology that converts low-frequency mechanical energy into electrical energy. However, the output of TENGs is limited by the tribolayer material used. In this study, a unique lamellar crystal triboelectric nanogenerator (LC-TENG) that uses polyamide-66 (PA66) lamellar crystal spin-coated films as positive triboelectric layers and FEP films as negative triboelectric layers is presented. The large vertical interlocking nanosheet structure on the PA66 spin-coating film, incubated in solution, improves surface roughness and promotes charge storage capacity. Under a constant force of 10 N and a frequency of 2 Hz, the LC-TENG with dimensions of 3 cm × 3 cm can achieve a peak voltage and current of 153 V and 7.35 μA, respectively. With an external load resistance of ∼11 MΩ, the TENG's maximum power density is 0.67 W m−2. The LC-TENG can easily harvest energy from human motions and light up a 36-LED array driven by a linear motor. Compared to TENGs using the initial smooth spin-coated film as the triboelectric electrode, the voltage and current from the lamellar structure film are 2.38 times and 2.17 times higher, respectively. This is the first time that a lamellar crystal structure has been introduced into friction material optimization, providing an efficient and feasible way to explore active sensor or electrode materials for self-powered electronic devices.

Graphical abstract: A PA66 lamellar crystal film with excellent triboelectric performance in vertical contact separation mode

  • This article is part of the themed collection: #MyFirstJMCC

Supplementary files

Article information

Article type
Paper
Submitted
28 Qas 2023
Accepted
09 Leq 2023
First published
10 Leq 2023

J. Mater. Chem. C, 2023,11, 12222-12233

A PA66 lamellar crystal film with excellent triboelectric performance in vertical contact separation mode

J. Liu, P. Ji, Z. Wang, X. Liu, Y. Lin, X. Li, L. Chen, X. Tian and S. Luo, J. Mater. Chem. C, 2023, 11, 12222 DOI: 10.1039/D3TC02258G

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