A pulse controllable voltage source based on triboelectric nanogenerator. (November 2020)

• Record Type: Journal Article
• Authors: Xia, Kequan; Wu, Di; Fu, Jiangming; Xu, Zhiwei
• Is Part Of: Nano energy. Volume 77(2020)
• Publication Date: 2020-11
• Subjects: Triboelectric nanogenerator (TENG) -- Direct-current (DC) -- Pulse controllable voltage source (PCVS) -- Self-powered electrocatalytic system; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2020.105112
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: The large matching impedance and low-current output characteristics of the triboelectric nanogenerator (TENG) make the effective output of TENG severely limited for directly powering electronic devices. Here, we proposed a novel pulse controllable voltage source based on TENG (PCVS-TENG) by combining a TENG with a series of electronic components (a rectifier bridge, a capacitor) and an unidirectional switch, which can exceed the impedance matching limit of conventional TENG, and realize controllable voltage output regardless the load resistance. Based on the results, when the open-circuit voltage ( V oc ) and short-circuit current ( I sc ) of TENG can arrive at 495 V and 6.49 μA, but for PCVS-TENG (with a 1 nF capacitor), the V oc and I sc can reach 120 V and 87 μA, respectively. Corresponding output power at low load resistance (1 MΩ) of PCVS-TENG can achieve 7.569 mW, which is 145.5 times than the maximum output power (52 μW) of TENG with a load of 1 MΩ. It is noteworthy that the pulse width of the output signal can be controllable by controlling the capacitance, and the wonderful reliability and excellent I sc stability at different working frequencies of PCVS-TENG can be observed. Furthermore, by adjusting the capacitance in PCVS-TENG, various output signal waveforms can be generated, such as square wave, sawtooth wave and so on. The energy generated by PCVS-TENG can be directly used for the separate organic dyes from methyl orange solution (MO) as chemical raw materials through a self-powered electrocatalytic system. Graphical abstract: Image 1 Highlights: A novel pulse controllable voltage source based on triboelectric nanogenerator is proposed, which can exceed the impedance matching limit of conventional TENG, and realize high output energy output and controllable voltage output regardless the load resistance. Corresponding output power at low load resistance (1 MΩ) of PCVS-TENG can achieve 7.569 mW, which is 145.5 times than the maximum output power (52 μW) of TENG with a load of 1 MΩ. Moreover, by adjusting the capacitance in PCVS-TENG, various output signal waveforms can be generated, such as square wave, sawtooth wave and so on.