Multifunctional Latex/Polytetrafluoroethylene-Based Triboelectric Nanogenerator for Self-Powered Organ-like MXene/Metal–Organic Framework-Derived CuO Nanohybrid Ammonia Sensor

• Published in: ACS nano Vol. 15; no. 2; pp. 2911 - 2919
• Main Authors: Wang, Dongyue, Zhang, Dongzhi, Yang, Yan, Mi, Qian, Zhang, Jianhua, Yu, Liandong
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 23.02.2021
• Subjects: flexible electronics; Ti3C2T x MXene; NH3 sensor; triboelectric nanogenerator; self-powered sensor; Ti3C2Tx MXene
• ISSN: 1936-0851; 1936-086X; 1936-086X
• DOI: 10.1021/acsnano.0c09015

Self-powered sensors are crucial in the field of wearable devices and the Internet of Things (IoT). In this paper, an organ-like Ti3C2T x MXene/metal–organic framework-derived copper oxide (CuO) gas sensor was powered by a triboelectric nanogenerator (TENG) based on latex and polytetrafluoroethylene for the detection of ammonia (NH3) at room temperature. The peak-to-peak value of open-circuit voltage and short-circuit current generated by the prepared TENG can reach up to 810 V and 34 μA, respectively. The TENG can support a maximum peak power density of 10.84 W·m–2 and light at least 480 LEDs. Moreover, a flexible TENG under a single-electrode working mode was demonstrated for human movement stimulation, which exhibits great potential in wearable devices. The self-powered NH3 sensor driven by TENG has an excellent response (V g/V a = 24.8 @ 100 ppm) at room temperature and exhibits a great potential in monitoring pork quality. Ti3C2T x MXene and CuO were characterized by SEM, TEM, EDS, XRD, and XPS to analyze the properties of the materials. The NH3 sensing performance of the self-powered sensor based on MXene/CuO was greatly improved, and the mechanism of the enhanced sensing properties was systematically discussed.