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Volume 9
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10.3390/gels9030257
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Review

Recent Development of Self-Powered Tactile Sensors Based on Ionic Hydrogels

by
Zhen Zhao
1,2,
Yong-Peng Hu
1,2,
Kai-Yang Liu
1,2,
Wei Yu
1,2,
Guo-Xian Li
1,2,*,
Chui-Zhou Meng
1,2,* and
Shi-Jie Guo
1,2
1
State Key Laboratory for Reliability and Intelligence of Electrical Equipment, School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China
2
Hebei Key Laboratory of Smart Sensing and Human-Robot Interaction, School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China
*
Authors to whom correspondence should be addressed.
Gels 2023, 9(3), 257; https://doi.org/10.3390/gels9030257
Submission received: 18 February 2023 / Revised: 15 March 2023 / Accepted: 20 March 2023 / Published: 22 March 2023
(This article belongs to the Special Issue Advances in Conductive Polymers and Hydrogels)
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Abstract

Hydrogels are three-dimensional polymer networks with excellent flexibility. In recent years, ionic hydrogels have attracted extensive attention in the development of tactile sensors owing to their unique properties, such as ionic conductivity and mechanical properties. These features enable ionic hydrogel-based tactile sensors with exceptional performance in detecting human body movement and identifying external stimuli. Currently, there is a pressing demand for the development of self-powered tactile sensors that integrate ionic conductors and portable power sources into a single device for practical applications. In this paper, we introduce the basic properties of ionic hydrogels and highlight their application in self-powered sensors working in triboelectric, piezoionic, ionic diode, battery, and thermoelectric modes. We also summarize the current difficulty and prospect the future development of ionic hydrogel self-powered sensors.
Keywords: ionic hydrogels; self-powered sensors; piezoelectric; tactile sensors ionic hydrogels; self-powered sensors; piezoelectric; tactile sensors

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MDPI and ACS Style

Zhao, Z.; Hu, Y.-P.; Liu, K.-Y.; Yu, W.; Li, G.-X.; Meng, C.-Z.; Guo, S.-J. Recent Development of Self-Powered Tactile Sensors Based on Ionic Hydrogels. Gels 2023, 9, 257. https://doi.org/10.3390/gels9030257

AMA Style

Zhao Z, Hu Y-P, Liu K-Y, Yu W, Li G-X, Meng C-Z, Guo S-J. Recent Development of Self-Powered Tactile Sensors Based on Ionic Hydrogels. Gels. 2023; 9(3):257. https://doi.org/10.3390/gels9030257

Chicago/Turabian Style

Zhao, Zhen, Yong-Peng Hu, Kai-Yang Liu, Wei Yu, Guo-Xian Li, Chui-Zhou Meng, and Shi-Jie Guo. 2023. "Recent Development of Self-Powered Tactile Sensors Based on Ionic Hydrogels" Gels 9, no. 3: 257. https://doi.org/10.3390/gels9030257

APA Style

Zhao, Z., Hu, Y.-P., Liu, K.-Y., Yu, W., Li, G.-X., Meng, C.-Z., & Guo, S.-J. (2023). Recent Development of Self-Powered Tactile Sensors Based on Ionic Hydrogels. Gels, 9(3), 257. https://doi.org/10.3390/gels9030257

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