Humidity Stable Thermoelectric Hybrid Materials Toward a Self‐Powered Triple Sensing System
Suo Tu, Ting Tian, Tianxiao Xiao, Xiangtong Yao, Sicong Shen, Yansong Wu, Yinlong Liu, Zhenshan Bing, Kai Huang, Alois Knoll, Shanshan Yin, Suzhe Liang, Julian E. Heger, Guangjiu Pan, Matthias Schwartzkopf, Stephan V. Roth, Peter Müller‐Buschbaum
Abstract
Abstract Highly sensitive and humidity‐resistive detection of the most common physical stimuli is of primary importance for practical application in real‐time monitoring. Here, a simple yet effective strategy is reported to achieve a highly humidity‐stable hybrid composite that enables simultaneous and accurate pressure and temperature sensing in a single sensor. The improved electronic performance is due to the enhanced planarity of poly (3,‐4ethylenedioxythiophene) (PEDOT) and charge transfer between PEDOT:polystyrene sulfonate (PEDOT:PSS) and multi‐walled carbon nanotubes (CNTs) by strong π–π interaction. The preferred electronic pathway induced by a robust morphology in the hybrid composite is responsible for the high humidity stability. This study also demonstrates that the sensor has tremendous potential for intelligent object identification with a high level of 97.78% accuracy. Together with the position‐detection capability of a triboelectric nanogenerator (TENG), advantages for potential industrial applications of the triple sensing system in terms of intelligent classification without seeing are foreseen.