Low-Defect Laser-Induced Graphene from Lignin for Smart Triboelectric Touch Sensors

Shuhong Yang; Bujingda Zheng; Honghua Qian; Qiangu Yan; Guoliang Huang; Jian Lin; Caixia Wan

doi:10.1021/acsanm.4c05362

Treesearch

Low-Defect Laser-Induced Graphene from Lignin for Smart Triboelectric Touch Sensors

Formally Refereed

Authors:

Shuhong Yang, Bujingda Zheng, Honghua Qian, Qiangu Yan, Guoliang Huang, Jian Lin, Caixia Wan

Year:

2024

Type:

Scientific Journal

Station:

Forest Products Laboratory

DOI:

https://doi.org/10.1021/acsanm.4c05362

Source:

ACS Applied Nano Materials

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Abstract

Laser-induced graphene (LIG) has emerged as a versatile carbon material for broad applications. However, the synthesis of high-quality LIG materials, especially with low defects, remains underexplored. This study was thus focused on developing a facile and cost-effective alternative to producing low-defect LIG, especially using lignin as a renewable precursor. The results showed that lignin treated by methyl ethyl ketone yielded LIG with a markedly low-defect level (I_D/I_G ratio of 0.12) by direct laser writing under ambient conditions. The triboelectric tactile sensor fabricated from low-defect LIG electrodes exhibited exceptional durability (over 15,000 cycles), accurate and real-time responsiveness (<0.01 s), wide-ranged touch frequencies (1−6 Hz), and ultrasensitivity to pressure (5−300 kPa). Moreover, the sensor was successfully demonstrated for the wireless control of LEDs. This work indicated that lignin-derived low-defect LIG has great potential for smart electronics applications.

Keywords

direct laser writing, laser-induced graphene, lignin, low defects, triboelectric touch sensors

Citation

Yang, Shuhong; Zheng, Bujingda; Qian, Honghua; Yan, Qiangu; Huang, Guoliang; Lin, Jian; Wan, Caixia. 2024. Low-Defect Laser-Induced Graphene from Lignin for Smart Triboelectric Touch Sensors. ACS Applied Nano Materials. 7(21): 25241-25248. https://doi.org/10.1021/acsanm.4c05362.